英语从句构成

引导词加陈述性句子

英语中的简单句：主+谓+宾 与之类比，英语的从句也应该有这样完整的结构。 从句分为好几种，有定从，宾从，主从，状从……eg,定从：She is a pretty girl who is popular amoung our class. 宾从：It is where I disagree. 主从：What I like is food. 状从:I listen to the teacher carefully ,concentrating on what the teacher say.……还有好多好多，分析从句，重在分析句子结构 上图中，应该是as soon as the program end

引导词+句子

英语中从句有6类，分别为：主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句。

1、主语从句（Subject Clause）

用作主语的从句叫主语从句。引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。

2、表语从句（Predicative Clause）

用作表语的从句叫做表语从句。引导表语从句的关联词与引导主语从句的关联词很多都一样。

3、宾语从句（Object Clause）

在句子中起宾语作用的从句叫做宾语从句。宾语从句分为三类：动词的宾语从句、介词的宾语从句和形容词的宾语从句。

4、同位语从句

是名词性从句(主语从句、表语从句、宾语从句、同位语从句)中的主要从句之一，从句作同位语表示与之同位的名词(短语)的实际内容，它的作用相当于名词，对前面的名词(短语)加以补充说明或进一步解释，相当于一个表语从句，它们之间的关系就是同位关系，即主表关系。

5、定语从句

是由关系代词或关系副词引导的从句，其作用是作定语修饰主句的某个名词性成分，相当于形容词，所以又称为形容词性从句，紧跟在它所修饰的先行词后面。

6、状语从句

用作状语的从句叫作状语从句，其关联词是一些从属连词。修饰主句中的动词、形容词和副词，通常由从属连词引导，按其意义和作用可分为时间、地点、 条件、 原因、让步、目的、结果、 方式、比较状语从句等。

从句有主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类.前四类由于主语从句、表语从句、宾语从句及同位语从句在句子的功用相当于名词,所以通称名词性从句；后两类定语从句和状语从句功用相当于形容词,称为形容词性从句.状语从句还可以分为条件状语从句、原因状语从句、方位状语从句和时间状语从句. 1.主语从句（Subject Clause）：用作主语的从句叫主语从句.引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等. 2.表语从句（Predicative Clause）：用作表语的从句叫表语从句.引导表语从句的关联词与引导主语从句的关联词大都一样. 3.宾语从句（Object Clause）：在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句. [ 第一部分 一.、定义： 宾语从句就是一个句子作动词或介词的宾语. 二、学习宾语从句要抓住三要素：连接词、语序和时态. 连接词一般都是that(指事务或人),which（指事）,who（指人） 1．从句为陈述句,常选择连接词that或将that省略,直接与主句相连. 2．从句为一般疑问句,常选择连接词if或whether.在whether…or not结构中不能用if替换. 3．从句为特殊疑问句,常选择what,when,where,which,who,how等的疑问代、副词作连接词. ★当who为主语时,句式为：who+谓语+其他 判断时态情况： 1.主句是一般现在时,从句为各种时态情况 2.主句是一般过去时,从句为各种相应过去时态注意：从句描绘客观事实,用一般现在时 3.主句是一般将来时,一般从句为一般现在时（“主将从现”） 例题： 〈1. The teacher told the children that the sun＿＿B＿＿ round. A. was B. is C. were D. are 答案为B,属于第二种情况. 宾语从句,在复合句中作宾语,位于及物动词后； Tell him which class you are in ． (1)主、从句时态一致： 主句谓语过去时,从句相应过去时； He answered that he was listening to me. 主句谓语现在时,从句时态任所需； He says (that) he will leave a message on my desk. 具体过去永不变,真理格言现在时； He told me that he was born in 1980. （2）否定前移,及完成反意问句； 在think / believe / suppose / guess / imagine / expect等动词后跟宾语从句否定式时,应转移到主句上去,完成反意疑问句时,应与从句主、谓保持一致.（注: 否定前移的条件是,主句主语是第一人称） I don't think you are right ,are you ? （3）在表示建议 suggest , advise 要求demand 、desire、require、request、propose； 决定 decide; 命令 order、command; 坚决主张 insist; 等动词后跟宾语从句,用（should）+v．（虚拟语气） eg． I suggested that you（should）study hard． （4）如果宾语从句后有宾语补足语,用it作形式宾语,把宾语从句后置 eg．You may think it strange that he would live there． （5）宾语从句that常可省略,但在以下情况下不能省略 A．当主句谓语动词带有两个或两个以上宾语从句时,可以省略第一个that,其他不能省略. eg．I believe（that）you have done your best and that things will get bet?鄄ter． B．当it作形式宾语时 eg．She made it clear that she had nothing to do with him． C．当宾语从句前置时 eg．That our team will win,I believe． 三、分类 A 、作动词的宾语: eg．I heard the news I 主语 heard 谓语动词 the news.名词作宾语 I主语 heard 谓语动词 that he would come here later on.一个句子作宾语---宾语从句 B 、作介词的宾语: eg．He said nothing about this plan . He主语 said 谓语动词 nothing 代词作动词的宾语 about 介词 the plan. 名词作介词的宾语 四、带有宾语从句的复合句的构成: 带有宾语从句的复合句就是用连接词把一个主句和一个宾语从句连接在一起.连接词有：that(可省略),what, who, when, where, why, which, if, whether, how. 五、注意： A 宾语从句必须用陈述语序. False: He is wondering when can he finish this difficult job. Right: He is wondering when he can finish this difficult job. B 有时候可以用it 作形式宾语,而把真正的宾语从句放在后面. Bad: I thought that he could finish this job in just two hours impossible. Good: I thought it impossible that he could finish this job in just two hours. Bad: He left whether we should continue this project to my judgment. Good: He left it to my judgment whether we should continue this project. C 带有宾语从句的复合句的否定形式一般是否定主句. Bad: I think he doesn’t like the English teacher. Good: I don’t think he likes the English teacher. D False: He wanted to know why he is crying in the corner. Right: He wanted to know why he was crying in the corner. 4.同位语从句（Appositive Clause）： 与先行词同位或等同的从句叫作同位语从句.其关联词多为that. 5.定语从句（Attributive Clause）：用作定语的从句叫定语从句.定语从句一般皆放在被它所修饰的名（代）词之后,这种名（代）词就叫作先行词（Antecedent）.引导定语从句的关联词为关系代词(或称引导词、关系词等）.关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语. ①引导定语从句的关联词有who, whom, whose, that, when, where, why 和 which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which. 例句： The dog that/which was lost has been found. （失踪的狗已经找到了.） ③as 可做引导词引导定语从句, 多和such, the same 连用. As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头. 例句： Such people as you describe are rare nowadays.（你描述的那一类人现在很少了.） ④介词+which/whom/whose从句 The driver is the man from whose room she had stolen the gold watch.（她就是从那个司机的房间偷了金表的.） ⑤代/名+介词+which 从句 He is needing a book, the name of which I don't know.（他需要一本书,但是我不知道书名.） ⑥同位语从句和定语从句 The news that you told me was really exciting.（你告诉我的好个消息真的是很激动人心.） ⑦ 难句: NO.1He is one of the men who were chosen to represent the group.（他是被选为代表该团队的人中一员.） 第二部分 一、时态 1·主句用一般现在时,从句可用任意时态. 2·主句用过去时,从句用过去某个时态. 3·主句用过去时,从句是真理时,只用一般现在时. 二、宾语从句的几类连接词： ①从属连词 连接宾语从句的从属连词主要有that,if,whether. that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句. 例句： I don’t know if there will be a bus any more. 我不知道是否还会有公交车. ②连接代词 连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等. 连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述. 例句： Do you know who has won Red Alert game? 你知道谁赢了这一局红警游戏吗? ③连接副词 连接副词主要有when,where,why,how,whenever,wherever,however等. 例句： He didn’t tell me when we should meet again. 他没有告诉我什么时候我们能再见面. 三、动词的宾语从句 大多数动词都可以带宾语从句 We all expect that they will win , for members of their team are stronger. 我们都预料他们会赢,因为他们的队员更强壮. ★部分“动词+副词”结构也可以带宾语从句 例句： I have found out that all the tickets for the concert have been sold out. 我发现这场音乐会的所有票都卖光了. ★动词短语也可以带宾语从句 常见的这些词有：make sure确保 make up one’s mind下决心 keep in mind牢记 例句： Make sure that there are no mistakes in your papers before you turn them in. 在上交试卷前确保没有任何错误. 四、可运用形式宾语it代替的宾语从句 ①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置. 例句： I think it necessary that we take plenty of hot water every day . 我认为每天多喝开水是有必要的. ②有些动词带宾语从句时寻要在宾语与从句前加it 这类动词主要有:hate, take , owe, have, see to. 例句： I hate it when they with their mouths full of food. 我讨厌他们满嘴食物时说话. ③若宾语从句是wh-类,则不可用it代替 例句： We all consider what you said to be unbelievable. 我们都认为你所说的是不可信的. 五、介词的宾语从句 用wh-类的介词宾语从句 例句： We are talking about whether we admit students into our club. 我们正在讨论是否让学生加入我们的俱乐部. ★用that,if引导的介词宾语从句有时候except,but,besides三个介词后可见到that引导的宾语从句 例句： I know nothing about my new neighbor except that he used to work with a company. 对于我的新邻居我只知道他曾在一家公司上班,其他一无所知. 六、形容词的宾语从句 常用来引导宾语从句的形容词有: sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised 例句： I am sure I will pass the exam. 我确信我会通过考试. 七、if,whether在宾语从句中的区别 ①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if ②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether. ③whether后可以加or not,但是if不可以. ④在不定式前只能用whether. 如： I can’t decide whether to stay. 我不能决定是否留下. ⑤避免歧异时,我们常用whether而不用if. 八、哪些宾语从句不可以省略引导词that 1.当that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等动词的宾语时; 2.当宾语从句较长时; 3.当主语状语置于主句尾,宾语从句之前时; 4.当主语谓语动词(包括非谓语动词)与宾语从句之间有插入语时; 5.当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that不可以省略; 6.当宾语从句中的主语是this,that或this,that做主语的定语时; 7.当宾语从句是双宾语中的直接宾语时; 8.当宾语从句的主语是非谓语动词或主语从句时; 9.当主语中的谓语动词是固定词组时; 10.当宾语从句有it做其先行词时; 11.在直接引语中,转述分句把宾语从句隔开时. 九、宾语从句的否定转移 主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致. 例句： I don’t think he will come to my party.而不能说成I think he won’t come to my party. 我认为他不会来我的舞会. ★如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式. 例句： We find that he never listens to the teacher carefully,does he? 我们发现他从来不仔细听老师讲课,是不是? 十、宾语从句的时态和语序 当主句为现在时或将来时的时候,宾语从句的时态一般不受主句的时态所影响. 当主句为过去时的时,细分为一下几种情况： ①从句用一般过去时或过去进行时表示与主句谓语动词动作同时发生 例句： I only knew he was studying in a western country,but I didn’t know what country he was in. 我只知道他当时在西方的一个国家读书,可不知道是哪个国家. ②从句过去完成时表示该动作发生在主句谓语动作之前 例句： He told me that he had told Mary about the meeting already. 他告诉我他已经把有关会议的事情告诉的了Mary. ③从句谓语用过去将来时表示该动作发生在主句谓语动作之后 例句： The reporter asked if the government would take necessary measures to put down the to-do. 记者问政府是否会采取必要的措施镇压骚乱. ★如果从句是一个客观真理,那么从句的时候不根据主句的时态而变化 例句： The teacher said that the moon goes around the earth yesterday. 老师昨天说月亮绕着地球转. ★当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首 例句： Who do you think the public might choose as their favorite singer this year? 你认为今年公众会选谁为他们最喜欢的歌手. 同位语从句用法比较"固定",把关键的几个词背下来（下面这个材料供参考）： 一、在复合句中用作同位语的从句叫同位语从句.它一般跟在某些名词后面,用以说明该名词表示的具体内容.如： I had no idea that you were here．我不知道你在这里. 二、可以跟同位语从句的名词通常有news,idea,fact,promise,question,doubt,thought,hope,message,suggestion,words（消息）,possibility等.如： I’ve come from Mr wang with a message that he won’t be able to see you this afternoon． 我从王先生那里来,他让我告诉你他今天下午不能来看你了. 三、英语中引导同位语从句的词通有连词 that,whether,连接副词 how,when,where等.（注：if,which 不能引导同位语从句.）如： l have no idea When he will be back．我不知道他什么时候回来. 四、有时同位语从句可以不紧跟在说明的名词后面,而被别的词隔开. 如： The thought came to him that maybe the enemy had fled the city． 他突然想起可能敌人已经逃出城了. 五、同位语从句与定语从句的区别. 1、同位语从句与前面的名词是同位关系,即说明它前面名词的内容；而定语从句与前面的名词是修饰与被修饰关系,即限定它前面的名词范围,或补充一些情况.如： The news that l have passed the exam is true．我通过了考试这一消息是真的. （同位语从句,即从句所表达的意思就是前面名词的内容.） The news that he told me just now is true．他刚才告诉我的消息是真的. （定语从句,从句对前面名词起修饰限制作用,即“他告诉我的”那个消息,而不是别的消息.） 2、引导同位语从句的that是连词,在从句中不充当任何成份,而引导定语从句的that是关系代词,除起连接作用外,还在从句中充当主语、宾语或表语等.如： The idea that computers can recognize human voices surprises many people. 计算机能够识别人的声音的想法使许多人感到惊奇.（that在从句中不充当任何成份.） 一个名词(或其它形式)对另一个名词或代词进行修饰,限定或说明,这个名词(或其它形式)就是同位语.同位语与被它限定的词的格要一致,并常常紧挨在一起. 1) 非独立的同位语：常出现在被限定词前 Bruce Lee (姓名) 李小龙 Graf Schmidt (称号,浑名) 施密特伯爵 Doktor Wang (职称,头衔) 王博士 Uncel Liu (亲戚的称呼) 刘叔叔 die Stadt Shanghai (类属名称) 上海市 the Province Hebei (类属名称) 河北省 das Jahr 2000 (类属名称) 2000 年 three Kilo tomato (度量名称) 三公斤西红柿 the University Bremen (专有名词) 不来梅大学

一、名词性从句 在句子中起名词作用的句子叫名词从句 (Noun Clauses）。 名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。（一）引导名词性从句的连接词 引导名词性从句的连接词可分为三类： 连接词：that,whether,if 不充当从句的任何成分） 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 不可省略的连词： 1. 介词后的连词 2. 引导主语从句和同位语从句的连词不可省略。 That she was chosen made us very happy. We heard the news that our team had won. 比较：whether与if 均为"是否"的意思。 但在下列情况下，whether 不能被if 取代：1. whether引导主语从句并在句首2. 引导表语从句 3. whether从句作介词宾语4. 从句后有"or not" Whether he will come is not clear. 大部分连接词引导的主语从句都可以置于句末，用 it充当形式主语。 It is not important who will go. It is still unknown which team will win the match. （二）名词性that-从句 1）由从属连词that引导的从句叫做名词性that-从句。 That只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。名词性that-从句在句中能充当主 语、宾语、表语、同位语和形容词宾语，例如： 主语：That he is still alive is sheer luck. 他还活着全靠运气。 宾语：John said that he was leaving for London on Wednesday. 约翰说他星期三要到伦敦去。 表语：The fact is that he has not been seen recently. 事实是近来谁也没有见过他。 同位语：The fact that he has not been seen recently disturbs everyone in his office. 近来谁也没有见过他，这一事实令办公室所有的人不安。 形容词宾语：I am glad that you are satisfied with your job. 你对工作满意我感到很高兴。2）That-从句作主语通常用it作先行词，而将that-从句置于句末，例如： It is quite clear that the whole project is doomed to failure. 很清楚，整个计划注定要失败。 It's a pity that you should have to leave. 你非走不可真是件憾事。 用it作形式主语的that-从句有以下四种不同的搭配关系： a. It + be +形容词+ that-从句 It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明显…… b. It + be + -ed 分词+ that-从句 It is believed that… 人们相信…… It is known to all that… 从所周知…… It has been decided that… 已决定…… c. It + be +名词+ that-从句 It is common knowledge that… ……是常识 It is a surprise that… 令人惊奇的是…… It is a fact that… 事实是…… d. It +不及物动词+ that-分句 It appears that… 似乎…… It happens that… 碰巧…… It occurred to me that… 我突然想起…… （三）名词性wh-从句 1）由wh-词引导的名词从句叫做名词性wh-从句。Wh-词包括who, whom,. whose, whoever, what, whatever, which, whichever等连接代词和where, when, how, why等连接副词。Wh-从句的语法功能除了和that-从句一样外，还可充当介词宾语、宾语补语和间接宾语等，例如：主语： How the book will sell depends on its author. 书销售如何取决于作者本人。直接宾语：In one's own home one can do what one likes. 在自己家里可以随心所欲。间接宾语：The club will give whoever wins a prize. 俱乐部将给得胜者设奖。表语： My question is who will take over president of the Foundation. 我的问题是谁将接任该基金会主席职位。宾语补足语：She will name him whatever she wants to. 她高兴给他起什么名字就取什么名字。同位语： I have no idea when he will return. 我不知道他什么时候回来。形容词宾语：I'm not sure why she refused their invitation. 我尚不能肯定她为什么拒绝他们的邀请。介词宾语： That depends on where we shall go. 那取决于我们去哪儿。2）Wh-从句作主语也常用先行词it做形式主语，而将wh-从句置于句末，例如： It is not yet decided who will do that job. 还没决定谁做这项工作。 It remains unknown when they are going to get married. 他们何时结婚依然不明。（四）if, whether引导的名词从句 1）yes-no型疑问从句 从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同， 例如： 主语：Whether the plan is feasible remains to be proved. 这一计划是否可行还有等证实。 宾语：Let us know whether / if you can finish the article before Friday. 请让我们知道你是否能在星期五以前把文章写完。 表语：The point is whether we should lend him the money. 问题在于我们是否应该借钱给他。 同位语：They are investigating the question whether the man is trustworthy. 他们调查他是否值得信赖。 形容词宾语： She's doubtful whether we shall be able to come. 她怀疑我们是否能够前来。 介词宾语： I worry about whether he can pass through the crisis of his illness. 我担心他是否能度过疾病的危险期。2）选择性疑问从句 选择性疑问从句由关联词if/whether…or或whethe…or not构成，例如： Please tell me whether / if they are Swedish or Danish. 请告诉我他们是瑞典人还是丹麦人。 I don't care whether you like the plan or not.我不在乎你是否喜欢该计划。（五）否定转移 1) 将think, believe, suppose, expect, fancy, imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式。 I don't think I know you. 我想我并不认识你。 I don' t believe he will come. 我相信他不回来。注意：若谓语动词为hope,宾语从句中的否定词不能转移。 I hope you weren't ill. 我想你没有生病吧。2) 将seem, appear 等后的从句的否定转移到前面。 It doesn't seem that they know where to go. 看来他们不知道往哪去。 It doesn't appear that we'll have a sunny day tomorrow. 看来我们明天不会碰上好天气。3) 有时将动名词，介词短语或整个从句的否定转变为对谓语动词的否定。 I don't remember having ever seen such a man. 我记得从未见过这样一个人。 (not否定动名词短语 having…) It's not a place where anyone would expect to see strange characters on the street. 在这里，人们不会想到在街上会碰上陌生的人。 (anyone 作主语，从句中的谓语动词不能用否定形式。)4) 有时状语或状语从句中否定可以转移到谓语动词前。 The ant is not gathering this for itself alone. (否定状语) 蚂蚁不只是为自己采食。 He was not ready to believe something just because Aristotle said so. (否定because状语) 他并不因亚里斯多德说过如何如何，就轻信此事。 She had not been married many weeks when that man's younger brother saw her and was struck by her beauty. (否定状语many weeks) 她结婚还不到几个月，这个人的弟弟就看见她了，并对她的美貌着了迷。 二、定语从句 定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。 关系代词有：who, whom, whose, that, which等。 关系副词有：when, where, why等。 （一）关系代词引导的定语从句 关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。1）who, whom, that 这些词代替的先行词是人的名词或代词，在从句中所起作用如下： Is he the man who/that wants to see you?他就是你想见的人吗？（who/that在从句中作主语） He is the man whom/ that I saw yesterday.他就是我昨天见的那个人。（whom/that在从句中作宾语）2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换）, 例如： They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。 Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。3）which, that 它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如： A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语） The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语） （二）关系副词引导的定语从句 关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。1）when, where, why 关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如： There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。 Beijing is the place where (in which) I was born. 北京是我的出生地。 Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗？2）that代替关系副词 that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如： His father died the year (that / when / in which) he was born. 他父亲在他出生那年逝世了。 He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。 （三）判断关系代词与关系副词 方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如： This is the mountain village where I stayed last year. I'll never forget the days when I worked together with you. 判断改错（注：先显示题，再显示答案，横线；用不同的颜色表示出。） （错） This is the mountain village where I visited last year. （错） I will never forget the days when I spent in the countryside. （对） This is the mountain village (which) I visited last year. （对） I'll never forget the days (which) I spent in the countryside. 习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。 方法二： 准确判断先行词在定语从句中的成分(主、谓、宾、定、状)，也能正确选择出关系代词/关系副词。例1. Is this museum ___ you visited a few days age? A. where B. that C. on which D. the one例2. Is this the museum ____ the exhibition was held. A. where B. that C. on which D. the one答案：例1 D，例2 A例1变为肯定句： This museum is ___ you visited a few days ago.例2变为肯定句： This is the museum ___ the exhibition was held. 在句1中，所缺部分为宾语，而where, that, on which都不能起到宾语的作用，只有the one既做了主句的表语，又可做从句的宾语，可以省略关系代词，所以应选D。 而句2中, 主、谓、宾俱全，从句部分为句子的状语表地点，既可用副词where，又因 in the museum词组，可用介词in + which 引导地点状语。而此题中，介词on 用的不对，所以选A。 关系词的选择依据在从句中所做的成分，先行词在从句中做主、定、宾语时，选择关系代词 (who, whom, that, which, whose)； 先行词在从句中做状语时，应选择关系副词 ( where 地点状语，when 时间状语，why 原因状语) 。（四）限制性和非限制性定语从句 1) 定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如： This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性） The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如： Charles Smith, who was my former teacher, retired last year. 查理·史密斯去年退休了，他曾经是我的老师。 My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。 This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如： He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。 Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。说明：关系代词that和关系副词why不能引导非限制性定语从句。（五）介词+关系词 1）介词后面的关系词不能省略。2）that前不能有介词。3） 某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when 和where 互换。 This is the house in which I lived two years ago. This is the house where I lived two years ago. Do you remember the day on which you joined our club? Do you remember the day when you joined our club?（六）as, which 非限定性定语从句 由as, which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。As一般放在句首，which在句中。 As we know, smoking is harmful to one's health. The sun heats the earth, which is very important to us. 典型例题 1）Alice received an invitation from her boss, ___came as a surprise.A. it B. that C. which D. he 答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选he句意不通。2）The weather turned out to be very good, ___ was more than we could expect. A. what B. which C. that D. it 答案B。which可代替句子，用于非限定性定语从句，而what不可。That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起在英语语法上行不通。3）It rained hard yesterday, ____ prevented me from going to the park..A. that B. which C. as D. it 答案B. as 和which在引导非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都可以作主语和宾语。但不同之处主要有两点： (1） as 引导的定语从句可置于句首，而which不可。 (2） as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词；若为行为动词，则从句中的关系代词只能用which.。 在本题中，prevent由于是行为动词，所以正确选项应为B。As 的用法例1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。 I have got into the same trouble as he (has).例2. as可引导非限制性从句，常带有'正如'。 As we know, smoking is harmful to one's health. As is know, smoking is harmful to one's health. As是关系代词。例1中的as作know的宾语；例2中，它充当从句的主语，谓语动词know要用被动式。（七）as, which 非限定性定语从句 由as, which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。As一般放在句首，which在句中。 As we know, smoking is harmful to one's health. The sun heats the earth, which is very important to us. 典型例题 1）Alice received an invitation from her boss, ___came as a surprise.A. it B. that C. which D. he 答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选he句意不通。2）The weather turned out to be very good, ___ was more than we could expect. A. what B. which C. that D. it 答案B。which可代替句子，用于非限定性定语从句，而what不可。That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起在英语语法上行不通。3）It rained hard yesterday, ____ prevented me from going to the park..A. that B. which C. as D. it 答案B. as 和which在引导非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都可以作主语和宾语。但不同之处主要有两点： (1） as 引导的定语从句可置于句首，而which不可。 (2） as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词；若为行为动词，则从句中的关系代词只能用which.。 在本题中，prevent由于是行为动词，所以正确选项应为B。As 的用法例1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。 I have got into the same trouble as he (has).例2. as可引导非限制性从句，常带有'正如'。 As we know, smoking is harmful to one's health. As is know, smoking is harmful to one's health. As是关系代词。例1中的as作know的宾语；例2中，它充当从句的主语，谓语动词know要用被动式。（八）先行词和关系词二合一 1)Whoever spits in public will be punished here. (Whoever 可以用 anyone who 代替) 2)The parents will use what they have to send their son to technical school. (what 可以用all that代替) （九）what/whatever;that/what; who/whoever 1）what = the thing which；whatever = anything What you want has been sent here. Whatever you want makes no difference to me. 2) who= the person that whoever= anyone who （错）Who breaks the law will be punished. （错）Whoever robbed the bank is not clear. （对）Whoever breaks the law will be punished. （对）Who robbed the bank is not clear.3) that 和 what 当that引导定语从句时 ，通常用作关系代词，而引导名词性从句时，是个不充当任何成分的连接词。宾语从句和表语从句中的that常可省略。What只能引导名词性从 句， 用作连接代词，作从句的具体成分，且不能省略。 I think (that) you will like the stamps. What we need is more practice.（十）关系代词that 的用法 1）不用that的情况 a) 在引导非限定性定语从句时。 (错) The tree, that is four hundred years old, is very famous here. b) 介词后不能用。 We depend on the land from which we get our food. We depend on the land that/which we get our food from.2) 只能用that作为定语从句的关系代词的情况 a) 在there be 句型中，只用that，不用which。 b) 在不定代词，如：anything, nothing, the one, all, much, few, any, little等作先行词时，只用that，不用which。 c) 先行词有the only, the very修饰时，只用that。 d) 先行词为序数词、数词、形容词最高级时，只用that。. e) 先行词既有人，又有物时。举例： All that is needed is a supply of oil. 所需的只是供油问题。 Finally, the thief handed everything that he had stolen to the police. 那贼最终把偷的全部东西交给了警察。三、状语从句 （一）地点状语从句 地点状语从句通常由where, wherever 引导。 Where I live there are plenty of trees. 我住的地方树很多。 Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。（二）地点状语从句 地点状语从句通常由where, wherever 引导。 Where I live there are plenty of trees. 我住的地方树很多。 Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。 （二）方式状语从句 方式状语从句通常由as, (just) as…so…, as if, as though引导。1） as, (just) as…so…引导的方式状语从句通常位于主句后，但在(just) as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，"就像"，多用于正式文体，例如： Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。 As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。 Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。2） as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如： They completely ignore these facts as if (as though) they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。） He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。） It looks as if the weather may pick up very soon.看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。） 说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如： He stared at me as if seeing me for first time.他目不转睛地看着我，就像第一次看见我似的。 He cleared his throat as if to say something.他清了清嗓子，像要说什么似的。 The waves dashed on the rocks as if in anger.波涛冲击着岩石，好像很愤怒。（三）原因状语从句 比较：because, since, as和for 1） because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。 I didn't go, because I was afraid. Since /As the weather is so bad, we have to delay our journey.2） 由because引导的从句如果放在句末，且前面有逗 号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today.（四）目的状语从句 表示目的状语的从句可以由that, so that, in order that, lest, for fear that, in case等词引导，例如： You must speak louder so that /in order that you can be heard by all. He wrote the name down for fear that(lest) he should forget it. Better take more clothes in case the weather is cold.（五）结果状语从句 结果状语从句常由so… that 或 such…that引导，掌握这两个句型，首先要了解so 和 such与其后的词的搭配规律。比较：so和 such 其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so 是副词，只能修饰形容词或副词。 so 还可与表示数量的形容词many, few,