吴晗晓美眉
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简单英语语法知识
there be句式有时可以与情态动词连用
■与 can / could 连用
There can be no doubt about that.
那是毫无疑问的。
Without heavy industry there can be no economic advance.
没有重工业，就没有经济的发展。
If the police hadn’t closed the road there could have been a bad accident.
要不是警方关闭了道路，本来会发生严重车祸的。
■与may / might 连用
There might still be hope.
可能还有希望。
There may be a letter for me.
大概有我一封信。
There may be a storm tomorrow.
明天可能有风暴。
At the end there may be an index.
结尾处可能有索引。
There might be drinks if you wait for a bit.
如果你等一会儿，可能会有饮料。
There may be more importance in it than would seem.
它的重要意义可能要比看上去大。
■与must 连用
There must be a mistake.
一定是弄错了。
He felt there must be something wrong.
他感到准有什么问题。
There must be somebody at home—ring again.
家里肯定有人——再按一下铃。
There must be some book which could help.
一定有那么本书可以帮我们的忙。
That can’t be the only way. There must be other ways of solving the problem.
那不是解决问题的唯一办法，肯定有另外的办法。
■与 should 连用
There shouldn’t be any doubt about it.
对此不应有什么怀疑。
It is important that there should be afire escape.
要有一个太平梯，这很重要。
The widow begged that there should be no reprisals.
遗孀祈求不要去搞复仇。
■与 ought to 连用
There ought to be a comma here.
这儿应有一个逗号。
There shouldn’t be any doubt about it.
对此不应有什么怀疑。
There ought to be traffic lights at this crossroads.
这个十字路口应该有红绿灯。
There ought to be enough of a fire left up there.
上面那儿残留的火势该够大了。
There oughtn’t to have been any difficulty about it
此事本不应有什么困难。
■与 used to 连用
There used to be a small park just around the corner.
以前在那个拐角就有一个小公园。
There are more flowers than there used to he.
现在比过去花儿更多了。
There used to be a cinema here, didn’t there?
过去这儿是有一家电影院的，是吗?
There used to be a hospital here.
原来这里有家医院。
There used to be four cinemas in the town, now there is only one.
过去这座城市有四家电影院。现在只有一家了。
从零开始学语法：情态动词can与may的用法
can 的用法
一、表能力，有“能，会，能够”的意思。例如：
-Can you drive a car? 你会开车吗?
-Yes, I can. 我会。/ No, I can't. 我不会。
二、表允许，在口语中代替may，有“可以”的意思。
(见下面 may 的用法第四点)
三、表示可能性，常用于否定句和疑问句。例如：
Can it be true? 那会是真的吗?
Today is Sunday. He can't be at school. 今天是星期天，他不可能在学校里。
很多同学都不太清楚 can 与 be able to 的异同吧，赶快来学习一下吧>>
may 的用法
一、表示许可或征求对方的许可，有“可以”的意思。例如：
You may go now. 你可以走了。
May I use your computer? 我用一下你的电脑可以吗?
二、回答以 may 开头的疑问句有如下表达法：
-May I smoke here? 我可以在这儿抽烟吗?
-Yes, you may. / Yes, please. 请抽吧。
-No, you can't. / No, you mustn't. / No, you'd better not. 请不要抽烟。
三、表示猜测，通常只用于陈述句。例如：
You may be right. 你可能是对的。
四、在口语中 can 可以代替 may 表示许可，但 can 较随便，may 更正式。例：
Can I use your bike, John? 约翰，我可以用一下你的自行车吗?
May I have a look at your license please, sir? 先生，我可以看一下你的执照吗?
从零开始学语法：情态动词must与have to的用法
must 的用法
一、表义务，“必须”。例如：
You must talk to them about their study. 你必须同他们谈谈关于他们学习的事。
二、在否定结构中表不许。例如：
You mustn't leave here. 你不能离开这儿。
三、表推测，暗含有很大的可能性。例如：
He must be ill. He looks so pale. 他肯定是病了。他的脸色那么苍白。
注意：之前我们说过 may 也可以表猜测，但是 may 暗含的可能性较小，must 暗含的可能性较大。另外否定的猜测是用can't。例如：
The baby can't be ill. He is so active. 那宝宝不大可能是病了。他那么活跃。
四、表不可避免，“必然要，必定会”。例如：
All men must die. 人总有一死。
五、表主张，“坚持要，一定要”。例如：
If you must go, at least wait till the rain stops. 如果你坚持要走，至少也要等雨停了再走。
六、关于 must 的简短回答：
-Must I clean the dining room at once? 我必须马上打扫膳厅吗?
-Yes, you must. 是的。
-No, you needn't. / No, you don't have to. 不必马上打扫。
have to 的用法
一、have to 表客观的需要和义务，must 表主观的`认识。例如：
I missed the train, so I had to take a taxi. 我没搭上火车，所以我只得打的。(客观上需要打的)
I must study hard. 我必须努力学习。(主观上认为应该努力学习)
二、在疑问句和否定句中，have to 多用助动词 do 构成，must 则直接提前或加not。例如：
Did he have to do it? = Must he do it? 他得做那件事吗?
而且在否定句中，have to 表不需要，must 表不允许：
You don't have to go there. 你不需要去那儿。
You mustn't go there? 你不可去那儿。
2014高考英语抓分训练：情态动词与虚拟语气、非谓语动词、复合句(含答案解析)
一、情态动词与虚拟语气考点
I am a middle school student. I have many dreams. If there 1.________ (be) not so much homework, I would have more time to do what I like to do. How I wish I 2.________ (listen) to my favourite music for an hour a day and 3.________ (play) table tennis for an hour in the morning. It's my desire that we 4.________ (hold) evening parties or 5.________ (organize) some interesting activities at weekend. I suggest that t here 6.________ (be) not so many tests. You can imagine what life 7.________ (will) be if I8.________ (realize) my dream. But I must face the exams. Without good marks, I 9.________ (will) not enter my ideal university. Anyway, it's high time that I 10.________ (encourage) myself and worked hard from now on.
二、不定式考点
Dear Editors，
My name is Adam Rouse. I'm 19 years old and I used 1.________ (be) a heavy smoker. I first started 2.________ (smoke) when I was only 15 alt hough I know it is very harmful 3.________ (smoke) at any time.
I read your magazine and know that there are some organizations 4.________ (help)people stop smoking.Participants learn 5.________ (recognise) smoking triggers and they try 6.________ (set) a date in the future when they will stop 7.________ (smoke)on purpose.Now, I am looking for some ideas 8.________ (help) myself 9.________ (give) up smoking and I expect myself 10.________ (accept) as a member of your organizations.
Yours sincerely，
Li Lei
三、分词考点
Many years ago, a young foreigner 1.________ (call) Marco Polo travelled all the way from Italy to China. From then on a window to the east has been 2.________ (open) for westerners.
Two kinds of gold coins once 3.________ (make) by Europeans showed their respects to the great explorer.
Marco Polo was 4.________ (bear) in 1254. He l ived in Venice, a rich city in Italy. Marco's father and uncle were merchants. They had travelled to the east. So when Marco was young, he enjoyed 5.________ (listen) to the stories about the places 6.________ (visit) by his father. His father decided 7.________ (take) him on a trip. When Marco Polo was just 17, he left his country for China. They were among the first to go along the silk road. They had a lot of trouble in 8.________(explore). So it was a hard trip for Marco Polo, but he was very brave. After about four years, Marco met Kublai Khan who gave him a job. Marco spent 17 years 9.________ (work) for him. He visited most parts of China. He learned lots of 10.________ (interest) things about Chinese life. When he returned home, he let others know about things like coal and paper money. He wrote about his trip in a famous book.
四、动名词考点
Everyone needs friends. There is an old 1.________ (say): friends are God's way of 2.________ (take) care of us. But how do you find real friendship and keep it?
The Care and Keeping of Friends by American author Sally Seamans tells young students some smart ways of 3.________ (find) friends. Sally says 4.________ (arrive) at friendship is just like 5.________ (plant) a tree. You plant the seed and take care of it to make it grow. First, you should choose a friend. What makes a good friend? It is not because a person has money or good looks. A good friend should be kind and patient. For example, if you have a hard day, a good friend should l isten to your complaints and do their best 6.________ (help). To make a friend, you cannot be too shy. You should make each other happy and share your life. But things can't always be happy. Even the best friends have fights. What should you do when you have a fight with your friends? You have to talk to them. When there is no one around, have an honest talk. If he or she doesn't want 7.________ (talk), you could write a letter.
Sally says there are three steps to 8.________ (be) friends again. Tell him or her how you are feeling, say what your friend has done wrong, and explain why you did this or that. The book also has advice on some small but important things like 9.________ (celebrate) your friends' success. Even if you haven't had a real friend before, you will start 10.________ (think) of having one if you read this book, because the book tells that friendship is the most important thing in your life.
五、名词性从句考点
Three years had passed and things were even worse than before. One can hardly imagine 1.________ the poor people suffered. Most of the workers lost their jobs and in order to provide for their families they sold everything 2.________ they had in their houses. They could neither get food nor clot hing. Many of them fell ill and died.
Now they began to understand 3.________ the factory owners were their enemies. But they believed that 4.________ the government knew 5.________ hard their conditions were, they would give them some help . In a meeting they decided 6.________ they should send some of their men to London to tell the government of the truth. Jackson was chosen to be one of them to go to the capital. He felt proud 7.________ he could do something for his friends.
A few days later, when Jackson came back from London and was asked to tell about 8.________ had happened there, he replied in a low voice, “I will never forget 9.________ we workers were treated there, and I will never forgive those who refused to hear us. Friends, let us do all we can to struggle against the capitalists and the government 10.________ supports them.”
六、定语从句考点
Some day, if you are lucky, you may see a bongo. But the only way 1.________ most people will see it is in a zoo. They are found in Africa, 2.________ they lived deep in forests. Even in Africa, very few people ever get to see a bongo. The bongo does not come out of the forest very often. It is an animal 3.________ keeps to itself.
The bongo has beautiful colouring. Its hair is bright brown mixed with orange and red. Down its back an d across its sides the bongo has yellowwhite strips. Animals 4.________ look for food at night usually have big eyes. This helps them see better at night. The forests in 5.________ bongos live are very dark. The eyes of bongos are very big. So, they have not trouble in living in the darkness.
Bongos in zoos do not like to go outside on bright days. They only go outside on those days when it is dark or very cloudy.
七、状语从句考点
Two travelling angels stopped to spend the night in the home of a wealthy family. The family was rude and refused to let the angels stay in the mansion's guestroom. Instead the angels were given a small space in the cold basement. 1.________ they made their bed on the hard floor, the older angel saw a hole in the wall and repaired it. When the younger angel asked 2.________， the older angel replied, “Things aren't always 3.________they seem.”
The next night the pair came to rest at the house of a very poor, 4.________ very hospitable farmer and his wife. After sharing what little food they had，the couple let the angels sleep in their bed 5.________ they could have a good night's rest. 6.________ the sun came up the next morning the angels found the farmer and his wife in tears. Their only cow, 7.________milk had been their sole income, lay dead in the field. The younger angel was infuriated and asked the older angel, “How could you have let this happen?” “The first man had everything, yet you helped him，” she accused. “The second family had little 8.________ was willing to share everything and you let the cow die.”
“Things aren't always what they seem, ” the older angel replied.“9.________ we stayed in the basement of the mansion, I noticed there was gold stored in the hole in the wall. 10.________ the owner was so obsessed with greed and unwilling to share his good fortune, I sealed the wall and he wouldn't find it. Then last night as we slept in the farmer's bed, the angel of death came to his wife. I asked God if the angel could take the cow instead.”
八、复合句考点
Gandhi was honoured as the father of the Indian nation. He has been respected and beloved by the Indians with the belief 1.________ he is an Indian national hero. He was born in India in 1869. 2.________ is recorded, he got married at the age of 13, following the local custom. In 1888 he sailed to England, 3.________ he studied law for three years and became a lawyer. 4.________ his return to India, he was sent to South Africa to work on a law case. In South Africa he was surprised to find 5.________ the problem of racial discrimination was serious. There he formed an organization and this was 6.________ he started to fight for equal rights. Gandhi returned to India in 1915, 7.________ India was controlled by the British. He led the Indians to fight for an end to the British rule and independence for his country. 8.________ in the political movement many Indians including Gandhi were put in prison and it was still not sure9.________ they could gain independence, the struggles never stopped. The British government had to give in and India won its independence in 1947. Unfortunately, Gandhi was shot by an Indian 10.________ opposed his views and died on January 30th, 1948.
一、情态动词与虚拟语气考点
1.were 2.listened 3.played 4.(should) hold
5.(should) organize 6.(should) be 7.would
8.realized/ should realize/ were to realize 9.would
10.encouraged
二、不定式考点
1.to be 2.smoking/to smoke 3.to smoke 4.to help
5.to recognise 6.to set 7.smoking 8.to help
9.(to)give 10.to be accepted
三、分词考点
1.called 2.opened 3.made 4.born 5.listening
6.visited 7.to take 8.exploring 9.working
10.interesting
四、动名词考点
1.saying 2.taking 3.finding 4.a rriving 5.planting
6.to help 7.to talk 8.being 9.celebrating
10.thinking/to think
五、名词性从句考点
1.how 2.that 3.that 4.if 5.how 6.that 7.that 8.what 9.how 10.that
六、定语从句考点
1.that 2.where 3.that/which 4.that/which 5.which
七、状语从句考点
1 .As/When 2.why 3.what 4.but 5.where
6.When 7.whose 8.but 9.When 10.Since/Because
八、复合句考点
1.that 2.As 3.where 4.On/After 5.that 6.how
7.when 8.Though/Although 9.whether 10.who
小升初英语语法大全：情态动词must与have to的用法
must 的用法
一、表义务，“必须”。例如：
You must talk to them about their study. 你必须同他们谈谈关于他们学习的事。
二、在否定结构中表不许。例如：
You mustn't leave here. 你不能离开这儿。
三、表推测，暗含有很大的可能性。例如：
He must be ill. He looks so pale. 他肯定是病了。他的脸色那么苍白。
注意：之前我们说过 may 也可以表猜测，但是 may 暗含的可能性较小，must 暗含的可能性较大。另外否定的猜测是用can't。例如：
The baby can't be ill. He is so active. 那宝宝不大可能是病了。他那么活跃。
四、表不可避免，“必然要，必定会”。例如：
All men must die. 人总有一死。
五、表主张，“坚持要，一定要”。例如：
If you must go, at least wait till the rain stops. 如果你坚持要走，至少也要等雨停了再走。
六、关于 must 的简短回答：
-Must I clean the dining room at once? 我必须马上打扫膳厅吗?
-Yes, you must. 是的。
-No, you needn't. / No, you don't have to. 不必马上打扫。
have to 的用法
一、have to 表客观的需要和义务，must 表主观的认识。例如：
I missed the train, so I had to take a taxi. 我没搭上火车，所以我只得打的。(客观上需要打的)
I must study hard. 我必须努力学习。(主观上认为应该努力学习)
二、在疑问句和否定句中，have to 多用助动词 do 构成，must 则直接提前或加not。例如：
Did he have to do it? = Must he do it? 他得做那件事吗?
而且在否定句中，have to 表不需要，must 表不允许：
You don't have to go there. 你不需要去那儿。
You mustn't go there? 你不可去那儿。
2011年中考英语试题单项选择之情态动词和系动词（1）
(2010 .河北省卷,31. 1) -Do we have to finish our homework this afternoon?
-Yes, you ________.
A. must B. can C. may D. need
（2010湖南省娄底市5. 1） -Must I be in hospital for a week， Doctor? ?
-No， you . You can go back home tomorrow.?
A.mustn’t B.needn’t C. must?
（2010湖南省娄底市7. 1） -What do you think of the cake??
-I like it very much. It tastes .?
A.good B.terrible C. well
(2010.江苏省盐城市3.1)The desk is not dirty.You_______clean it.
A.mustn’t B.shouldn’t C.needn’t C.can’t
(2010.四川省内江市23. 1)-What is your mother going to do this Saturday?
--I’m not sure.She_____go to see my grandmother.
A.can B.must C.may
（2010.四川省自贡市31. 1）-May we leave the classroom now?
--No,you _________.You_________to leave until the bell rings.
A.must;are allowed B.can’t ,aren’t supposed
C.needn’t ;aren’t allowed
答案：ABACCC
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小学英语基础语法知识大全
基础英语是英语入门者所必须学习的内容，基础英语是否学得好，关系到以后英语进阶学习的学习效果。下面是我整理的关于英语基础语法知识大全，希望大家认真阅读!
一、定义与分类
名词是表示人、事物、抽象概念等名称的词。根据名词的词汇意义，通常可将其分为专有名词和普通名词。专有名词表示人、地方、组织、机构等的专有名称，专有名词的第一个字母通常大写;普通名词表示人、物、概念等的一般名称。普通名词根据其语法性质可分为个体名词、物质名词、集合名词和抽象名词四类。
二、名词复数的构成方法
1. 在一般情况下，加词尾 –s;而以 s, x, z, sh, ch 等结尾的名词，通常加词尾 –es。如：
desk / desks 课桌 class / classes 班，课
box / boxes 盒子 dish / dishes 盘子
注：stomach / stomachs(胃)是例外。
2. 以y 结尾的名词，其复数构成要分两种情况：以“辅音字母+y”结尾的名词，将 y 改为 ies;以“元音字母+y”结尾的名词，直接加词尾-s;以 f 或 fe 结尾的名词，也有两种可能：即有些直接加词尾-s，有些则把 f / fe 改为 ves：
family / families 家 key / keys 钥匙
thief / thieves 贼 wolf / wolves 狼
注：在中学英语范围内，要改 f / fe 为 ves 的只有以下10个词(它们都是日常生活中的常用词)：wife(妻子)，life(生命)，knife(小刀)，leaf(树叶)，thief(贼)，half(一半)，self(自己)，shelf(架子)，loaf(面包)，wolf(狼)。
3. 以 o 结尾的名词，有些加词尾 -s，有些加-es，有些加-s或-es均可：
kilo / kilos 公斤 hero / heroes 英雄 zero / zero(e)s 零
注：在中学英语范围内，加词尾-es 的主要有以下4个：tomato(西红柿)，potato(土豆)，hero(英雄)，Negro(黑人)。
三、单数与复数同形的名词
sheep 绵羊 fish 鱼
deer 鹿 Chinese 中国人
Japanese 日本人 Portuguese 葡萄牙人
Swiss 瑞士人 aircraft 飞行器
means 方法 series 系列
head (牛等的)头数 works 工厂
注：fish 有时也用 fishes 这样的复数形式，尤其是表示种类时;head 若不是表示牲口的“头数”，而是表示“人的头”或“人数”，则要用 heads 这样的复数形式。
四、不规则的复数名词
man / men 男人 woman / women 女人
child / children 小孩 tooth / teeth 牙齿
foot / feet 脚 goose / geese 鹅
mouse / mice 老鼠 ox / oxen 公牛
五、名词的'可数性
名词根据其可数性可分为可数名词和不可数名词。这两类名词的主要特点如下：
1. 可数名词的用法特点：可以有复数形式;可直接在其前使用不定冠词或数词;可受 these, those, few, a few, many, a good [great] many, a great [good] number of 等修饰。如：
There are five rooms in the apartment. 公寓里有五间房。
There were many things to be done. 有很多事情要做。
A large number of students are Asians. 很多学生是亚洲人。
2. 不可数名词的用法特点：通常没有复数形式;其前不可直接用不定冠词或数词;可用(a) little, much, a great deal, a lot of, plenty of, a large amount of, a large quantity of, some, any 等修饰;要表示数量不可在前面直接加数词，而要用 a piece of 之类的结构。如：
Knowledge is power. 知识就是力量。
They haven't much furniture. 他们没有多少家具。
He lost a great quantity of blood. 他大量失血。
六、不可数名词与可数名词的转化
有的不可数名词在某些特殊情况下可转化为可数名词，如：
1. 有些物质名词表示不同种类或表示“一杯 / 罐 / 瓶”等数量意义时，可用作可数名词。如：
It was a special tea. 这是一种特别的茶。
She brought us three coffees. 她给我们端来三杯咖啡。
2. 有些抽象名词表示具体的事物时，可用作可数名词。如：
The party was a great success. 晚会非常成功。
3. 有些由动词思转化来的名词，表示“一场 / 阵 / 件…”时，可受不定不定冠词的修饰(此时通常有形容词或 of 短语修饰)。如：
A heavy snow was falling. 下着一场大雪。
I’d better go and have a wash now. 我还是现在去洗个澡。
七、名词的所有格
名词的所有格表示所属关系，它分-’s 所有格和 of 所有格两种形式。
1. -’s所有格的构成方法为：对于单数名词和不带词尾-s的复数名词，直接在其后加 -’s构成;对于带词尾-s的复数名词只加省字撇(’)。如：
Jim’s parents 吉姆的父母 men’s club男子俱乐部
the teachers’ office 教师办公室
注：用and连接的并列名词的所有格要分两种情况，即表示各自的所有关系时，要分别在并列名词后加-’s，表示共同的所有关系时，只在最后一个名词后加-’s：
Jack’s and Mike’s rooms 杰克和迈克(各自)的房间
Jack and Mike’s room杰克和迈克(共同)的房间
2. -’s所有格的用法：-’s 所有格通常用于有生命者，但有时也可用于无生命的东西，如用于表时间或距离的名词后，用于表示国家、城市、组织机构等的名词后等。如：
Where’re today’s papers? 今天的报纸在哪里?
What’s your government’s policy? 你们政府的政策是什么?
It is the country’s biggest city. 它是这个国家最大的城市。
3. of 所有格即指在名词后使用 of 短语来表示所有关系，它既可用于有生命的人或物，也可用于无生命的东西。如：
We all like the son of Mr Green. 我们都喜欢格林先生的儿子。
I’ll never forget the beauty of the lake. 我永远不会忘记那座湖的美丽。
注：of 所有格有时可以与-’s 所有格互换。如：
That man’s name is interesting. = The name of that man is very interesting. 那个人的名字很有趣。
4. 双重所有格。双重所有格就是指同时既使用 -’s 所有格又使用 of 所有格。如：
a friend of my father’s 我父亲的一位朋友
a photo of Mr Smith’s 史密斯先生的一张照片
注：被双重所有格修饰名词前有指示代词时，通常带有一定的感彩(如赞赏、不满、厌恶等)。如：
That little daughter of your cousin’s is really lovely. 你表哥的那个小女儿真是可爱。(表赞赏)
That daughter of your cousin’s is constantly complaining. 你表哥的那个女儿老是在报怨。(表厌恶)
另外，有时是否使用双重所有格会导致意义的变化。比较：
a photo of Mr Smith’s 史密斯先生收藏的一张照片
a photo of Mr Smith 史密斯先生照的一张照片
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-
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英语基础语法知识总结
英语必备语法知识
一、过去完成进行时
1.概念：表示某个正在进行的动作或状态，持续到过去某个时刻，还未完成，一直持续到之后的当前才结束。
2.基本结构：主语+ had + been + doing +其它
3.例子：She had been suffering from a bad cold when she took the exam.她在考试之前一直患重感冒。 Had they been expecting the news for some time?他们期待这个消息有一段时间了吧?
4.特殊含义：①尚未完成：He had been writing the novel.他已经在写小说了。(他没写完)
②企图：He had been studying the meaning of this proverb.他曾经学习过这个谚语。(他曾努力学习过它) ③未得结果：We had been studying what our enemy had said.我们一直致力于敌人所说的。(但是我们没有理解) ④最近情况：He had been quarrelling with his wife.他和他的妻子吵了一场架。(最近)
⑤反复动作：He had been asking me the same question.他一直问我相同的问题。(屡次)
⑥情绪：What had he been doing?他做了什么?(不耐烦)
二、 将来完成进行时
1.概念：表示动作从某一时间开始一直延续到将来某一时间。是否继续下去，要视上下文而定。
2.基本结构：shall/will have been doing
3.例子：I shall have been working here in this factory for twenty years by the end of the year.到今年年底，我将在这个工厂工作20年了。
If we don't hurry up the store will have been closing before we get there. 咱们如不快一点儿，等我们到了那儿，店门就会关了。
英语重要语法知识
介 词
一、介词的主要用法：介词是一种虚词,不能独立使用。介词之后一般有名词或代词(宾格)..或相当于名词的其他词类、短语或从句作它的宾语,即构成介词短语。有些介词是由两个以上的词构成的短语介词,
如：out of(从…中出来)because of(因为)away from(距离…),
on top of(在…顶上)ever since(自从…)next to(在…隔壁),
according to(根据…) in front of(在…前方)等。
二、介词短语的句法作用：
介词短语相当于一个形容词或副词,可用作状语、定语和表语。
如：The man came .(状)(那个人走下楼来)
The woman is from the countryside.
(定)(头上戴花的妇女来自乡下)
The teacher is now with the pupils.
(表)(老师现在和学生在一起)
三、介词短语在句子中的位置：
介词短语做状语时,如果表示时间/地点,可以放在句首或句尾,
如果表示方向/方式/伴随/涉及/原因/目的/比较,一般放在句尾;
介词短语作表语时放在连系动词之后;
介词短语作定语时,只能放在被修饰的名词之后。
如：He wanted to find a good jobin Shanghai the next year.
(状语)(他想来年在上海找份好工作) They searched the roomfor the thief.(他们在房间里搜索小偷)
The letters are for you.(表语)(信是给你的)
Have you seen a cat with a black head and four white legs?
(定语)(你看见一只黑头白腿的猫了吗?)
英语语法知识要点
一、主语
1、名词、代词(人称代词用主格)、动词不定式、动名词等充当,说明动作是“谁”发出的。
如：The painter painted a very nice picture. (画家画了一幅漂亮的画。)
They fought against SARS bravely. (他们勇敢地与非典搏斗。)
To see is to believe.(耳听为虚眼见为实).
Helping animals is to help people. (帮助动物就是帮助人类。)
2、动词不定式或动名词做主语时可用it代替,而不定式或动名词移至表语或宾语之后。
如：It is very comfortable to have a Class A seat during the long journey.
(在长途旅行中能有个甲等座位简直太舒服了。) Eating too much is bad for your health.(=It is bad for your health eating too much.) (吃得太多对你的身体不利。)
3、口语中常见主语或“主--系”省略： (It is) nothing. ((那)没有什么。) (It) doesn’t matter. ((那)没有关系。) (I) thank you. ((我)谢谢你。)
4、反意问句的附加问句,主语必须是代词：
The man looks worried,doesn’the? (这个人看上去很着急不是吗?)
Tigers are dangerous animals, aren’t they? (老虎是危险的动物不是吗?)
5、祈使句一般省略主语。加主语时往往用来指定某个人。
Keep the keyboards clean, children. (孩子们请保持键盘的清洁。) (省略了主语) You go there and fetch me a glass of water. (你去给我弄一杯水来。)
6、主语一般在句首,但在问句中会处于第二位和句尾;倒装句及there be句型主语在动词之后。
如：Computers are made in this factory. (计算机生产于这家工厂。)
Where are they? (他们在哪儿?)
Does the boy like staying home? (这个男孩喜欢呆在家里吗?)
7、主语与谓语必须保持单、复数的一致, 而谓语与表语或宾语之间没有这一要求。
Neither Jim nor Rosehas passed the exam. (Jim和Rose都没有通过考试。)
The Chinese peopleare a hardworking and brave people.
(中华民族是一个勤劳勇敢的民族。)
8、主语可以由从句充当,详见“主语从句”。
拓展： 初高中基础英语语法知识
一、词 法
1、名词
(1)名词的可数与不可数
可数名词指表示的人或事物可以用数来计量，它有单数与复数两种形式。不可数名词指所表示的事物不能用数来计量。物质名词与抽象名词一般无法用数目来统计，都称为不可数名词。
不可数名词前一般不能用冠词a、an来表示数量，没有复数形式。要表示“一个……”这一概念，就须加a piece of这一类短语。要注意许多名词在汉语里看来是可数名词，在英语里却不可数。如：chalk，paper，bread，rice，grass，news等。
(2)名词复数的规则变化
A.一般情况下加-s。
B.以s, x, ch, sh, 结尾的加-es。
C.以辅音字母加y结尾的改y为i再加-es。
D.以f，fe结尾的.，去掉f或fe，变成v再加-es。
(3)名词的所有格
A. 单数名词词尾加’s，复数名词词尾若没有s，也要加’s。
如：the worker’ s bike，the Children’ s ball
B. 表示几个人共有一样东西，只需在最后一个人的名字后加’ s若表示各自所有，则需在各个名字后加’ s。
如： This is Lucy and Lily’ s room.
These are Kate’ s and jack’ s rooms.
C. 如果是通过在词尾加-s构成的复数形式的名词，只加’。
如：the students’ books，the girls’ blouses
(另外：如果名词是有生命的，我们就用’s结构来表示所有关系。如果名词所表示的事物是无生命的，我们就要用名词+of+名词的结构来表示所有关系。)
2、代词
人称代词，物主代词，反身代词，指示代词，不定代词
(1)人称代词
第一人称单数
I me my mine myself
复数 we us our ours ourselves
第二人称
单数 you you your yours yourself
复数 you you your yours yourselves
第三人称
单数 he him his his himself
she her her hers herself
it it its its itself
复数 they them their theirs themselves
(2)物主代词
物主代词的用法：形容词性物主代词后面一定要跟一个名词;
名词性物主代词可作主语、表语、宾语。
(3)反身代词
反身代词的构成分两种：第一、二人称反身代词在形容词性物主代词后加上self或selves，第三人称的反身代词在宾格代词后加上self或selves.
反身代词的用法：一种是作宾语，由主语发出的动作又回到动作者本身。如：I enjoyed myself at the party. 另一种是作名词或代词的同位语;用来加强语气。如：I can do it myself.
(4)指示代词
指示代词的特殊用法：
(1)为了避免重复，可用that，those代替前面提到过的名词，但是this，these不可以。
(2)this，that有时可代替句子或句子中的一部分。
(5)不定代词
one,some,any,other,another,all,both,each,neither,many,much等。
3、冠词
(1)不定冠词an用在元音读音开头(不是指元音字母)的词前，其余用不定冠词a。
(2)定冠词的基本用法
A. 用在重新提到的人或事物前面。
B. 指谈话双方都知道的人或事物前面。
C. 用在单数可数名词前面，表示某一类人或事物。
(3)定冠词的特殊用法
A. 用在世界上独一无二的事物或方位名词前。
B. 用在序数词、形容词的最高级及only所修饰的名词前。
C. 用在江河、海洋、山脉、湖泊、群岛的名称前面。
D. 用在由普通名词和另外一些词所构成的专有名词前面。
E. 用在姓氏的复数形式前面，表示全家人或这一姓的夫妇二人。
F. 用在乐器名称前。
G. 和某些形容词连用，表示某一类人或事物。
(4)名词前不用冠词的情况
A. 在专有名词 (包括人名、地名、节日、月份、季节) 、物质名词和抽象名词前一般不用冠词。但在以festival组成的民间节日前要加the。
B. 表示一类人或事物的复数名词前。
C. 名词前有物主代词、指示代词、不定代词或名词所有格修饰时，不用冠词。
D. 三餐饭、球类、棋类、游戏名称前一般不用冠词。在有些词组中，有无冠词含义不同。
(sit) at table就餐; sit at the table坐在桌边
go to school去上学;go to the school去那所学校;in hospital住院;in the hospital在那个医院里
4、数词
(1)数字的表示
三位数数词要在百位和十位(若无十位则和个位)之间加and。
1，000以上的数字，从后向前第三位数加一个“，”，第一个“，”前为thousand，第二个“，”前为million，第三个“，”前为billion。
(2)序数词除了first，second，third外，其余都在基数词尾加-th构成。
(3)分数分子在前，分母在后，分子用基数词，分母用序数词，当分子大于1时，分母序数词要变成复数。
(4)hundreds(thousands，millions)of…
5、形容词、副词
(1)形容词的位置
A. 形容词作定语一般要放在名词前面，但当形容词修饰不定代词something，nothing，anything时要放在所修饰的不定代词之后。如：something important，nothing serious。
B. 当形容词带有表示度量的词或词组作定语或表语时，定语或表语要后置。如：
We have dug a hole two meters deep.
The hole is about two metres deep.
(2)形容词的比较等级
单音节词和少数双音节词，在词尾加-(e)r，-(e)st来构成比较级和最高级。其他双音节词和多音节词，在前面加more，most来构成比较级和最高级。如：
popular—more popular—most popular
important—more important—most important
(3)副词的比较等级
单音节副词和个别双音节副词通过加-er，-est来构成比较级和最高级。绝大多数副词借助more，most来构成比较级和最高级。
(4)少数形容词和副词比较级/最高级的不规则变化：
原级 比较级 最高级
well —— better —— best
badly —— worse —— worst
much —— more —— most
little —— less —— least
far —— farther —— farthest
farthest furthest
late —— later —— latest
(5)副词的最高级前面可以不加定冠词the。
6、介词
(1)表示时间的介词及介词短语
in, at, on, before，after，till，since，for, from…to, until， by，in the middle of，at the beginning of， at the end of，at half past five，at night，in a week，in the morning，in class，at sunrise， in spring / summer / autumn /winter，on Sunday，on Saturday afternoon，on a winter evening，for a long time，for two months，after school，since liberation，before lunch，at the time of，at the age of
(2)表示地点的介词及介词短语
in，at，into，to，on，beside，before，behind，above,under, outside,inside,up,from,far,near,across,off， down， among， past，between，out of，around，in the front of， in the middle of， at the back of，at the foot of，at home，at the gate，at the table，in the sky， on the ground，in a tree， in the south，in the sun，in the bed，on one’s way home，by the side of
二、八种基本时态
1、一般现在时
概念: 表示经常发生的动作或经常存在的状态。
常和 always , often , usually , sometimes , every day 等表时间的状语连用。如：
1) I go to school every day. 我每天都去学校。(表经常)
2) He is always like that. 他总是那样。 (表状态)
构成：
1) 主语 + be (am / are / is ) +……
2) 主语 + 实义动词/三单动词 + …
2、一般过去时
概念:
1) 表示过去某个时间发生的动作或存在的状态 , 常和表示过去的时间状语连用。如: yesterday , last week , in 1998 , two days ago等.
如: I went to a movie yesterday. 我昨天去看了一场电影。
2) 也可表示过去经常或反复发生的动作。
如: He always went to work by bike last week.
构成:
1) 主语 + be (was / were ) +……
2) 主语 + 实义动词过去式 +……
3、现在进行时
概念: 表示现在(说话瞬间)正在进行或发生的动作。如:
He is singing.
They are watching TV now.
构成: 主语 + 助动词be(am/are/is) + 动词-ing形式构成。
4、过去进行时
概念: 表示过去某一时刻或某一段时间正在进行的动作。这一特定的过去时间除了有上下文暗示外,一般用时间状语来表示。
如:
1) ---What were you doing?
---I was jumping.
2) ---What was the boy doing when the UFO arrived?
---He was sleeping.
构成: 主语 + 助动词be(was/were) + 动词-ing形式构成。
5、一般将来时
概念: 表示将来某个时间要发生的动作或存在的状态,也表示将来经常或反复发生的动作,常与表示将来的时间状语连用,如: tomorrow, next week, next year, in the future等。如:
He will go shopping tomorrow.
They are going to play basketball next week.
构成:
1) 主语 + 助动词will + 动原 +……
2) 主语 + be going to + 动原 + ……
6、过去将来时
概念: 表示在过去将来的某一时间发生的动作或存在的状态。
构成:
1) 主语(第一人称) + 助动词should + 动原 +……
2) 主语 + would + 动原 + ……
3) 主语 + was/ were going to +动原……
用法: 过去将来时除了上下文暗示外,一般常用在间接引语中,主句谓语动词为过去时态。如:
1) I should go.
2) You knew I would come.
3) They were going to Nanjing.
7、现在完成时
构成: 主语 + 助动词 ( have / has ) + 动词过去分词 +……
用法例句表示过去发生或已经完成的动作对现在造成的影响或结果。
---Have you had your lunch yet?
---Yes, I have. (现在我不饿了)
8、过去完成时
构成: 主语 + 助动词 had + 动词过去分词 +……
例句表示在过去某一时间或动作之前已经发生或完成了的动作。它表示的动作发生的时间是”过去的过去”.表示过去某一时间可用by,before 等构成的短语,也可用when, before, 等引导的从句或者通过上下文表示。
I had finished my homework when my mom came back home.
三、三种基本从句
从句的共同特点：
从句是指在一个句子中充当一个成分的句子，充当什么成分就叫什么从句，如：充当宾语就叫宾语从句，充当定语成分就叫定语从句。
从以上定义中我们可以得出关于从句的一个最大特点：从句是句子。
从句的共同特点：
1.从句都有自己的连接词
2.从句都是陈述语序(陈述语序就是主语在前，谓语在后，如：He is a teacher主语 He 在谓语is之前，因此是陈述语序，而Is he a teacher? 主语 He 在谓语is之后，因此不是陈述语序。)
1、宾语从句
宾语从句是指在一个句子中充当宾语的句子，如：
He said that he wanted to be a teacher when he grew up.
宾语从句的特点：
①宾语从句有自己的连接词
②宾语从句用陈述语序
③宾语从句的时态
(1)宾语从句的连接词：
宾语从句的连接词包括that、if/whether(是否)、特殊疑问词。
(2)宾语从句的语序：
A. 宾语从句的连接词后加陈述语序(主语在前，谓语在后),如：
I want to know if he can come tomorrow.
B. 当连接词本身又是宾语从句的主语时，后面直接加谓语动词，如：She asked me who had helped him.
(3)宾语从句的时态，只要记住以下口诀就可以了“主现则从任，主过则从过，客观真理一般现”
A. 主现则从任：主句如果是一般现在时，则从句根据时间状语需要从八种时态中任选一种，如：1.He tells me he likes English very much.(一般现在时)。
B. 主过则从过：主句如果是一般过去时，则从句根据时间状语需要从四种带“过”字的时态中任选一种，带“过”字的时态分别是：一般过去时，过去进行时，过去将来时，过去完成时。
如：He told me that he liked playing football(一般过去时)
C. 客观真理一般现:客观真理永远用一般现在时。
如：He says the moon goes around the earth.
2、状语从句
(1)时间状语从句：在一个句子中作时间状语的句子。
时间状语的连接词：when(当…时候) while(当…时候) as(当…时候) after(在…以后) before(在…以前) as soon as(一…就) since(自从…到现在) till /until(直到…才) by the time(到…为止)依旧是连接词后加陈述语序。
举例：when当…的时候(一般情况下主句是将来时的时候，从句要用一般现在时。)
Mozart started writing music when he was four years old.
(2)原因状语从句：在一个句子中作原因状语的句子。
连接词：由连词because, since, as引导, 也可由for, now that 等词引导。
举例：I didn’t go to school yesterday because I was ill.
(3)条件状语从句：在一个句子中作条件状语的句子。
连接词：if如果, unless (=if not) 除非(让步)
举例：If it doesn’t rain tomorrow, we will go hiking.
(4)目的、结果状语从句
目的状语从句是指在一个句子中充当目的状语的句子。
结果状语从句是指在一个句子中充当结果状语的句子
目的状语从句连接词so that, so…that , in order that 引导。
结果状语从句连接词 so…that, such…that, so much/many…that引导。
举例：so…that 如此…以至于
The scientist’s report was so instructive that we were all very excited.
(5)让步状语从句
让步状语从句是指在句子中作让步的状语的句子
连接词： though, although.，whether…or not
举例：Although he is rich, yet he is not happy.
3.no matter从句
结构："no matter +特殊疑问词+陈述语序" 或"特殊疑问词+后缀ever+陈述语序"
如：No matter what happened, he would not mind.
注意：no matter 不能引导主语从句和宾语从句。
3、定语从句
定语是指在句子中用来修饰名词、代词的成分。
如：I will give my teacher a bunch of beautiful flowers.(beautiful是定语)
定语从句是指在一个句子中作定语的句子，定语从句要放在所修饰的词后。如：
I have met the doctor who is in the No.1 hospital.
定语从句的连接词：
连接代词：who，which，whom，whose，that
连接副词：when，where，why
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