英语be动词解释

be动词的含义1 是（表状态）2, 在（表存在，位置）主词+be动词一般来说be动词要根据主词的人称来选择。（如下表）be动词的否定含be动词（am， is， are）的肯定句在be动词后面加not，即可变成否定句时。格式：肯定句：主词 + am/is/are +.......否定句：主词 + am/is/are + not+.......be动词可以跟not缩写在一起is not =isn'tare not = aren'tbe动词的疑问句在谓语是be动词的句子中，将be动词移到主词前，句尾加问号，即可构成疑问句格式：肯定句：主词 + am/is/are +.......疑问句：Am/Is/Are +主词 +.......？be动词开头的一般疑问句，可用Yes或No回答，而答句中的主词需要用代名词（I she he they we 等）代替格式：肯定回答：Yes,主词 + am/are/is.否定回答：No, 主词 + am/are/is + not2be动词用法有哪些be （be/is/are/am/was/were)[bi:]vihe is, we are, you are, they are （缩略式 I'm, you're, he's, we're, you're, they're）, （否定缩略式 I'm not, isn't, aren't）, 过去时 I was, you were, he was, we were, you were, they were （过去时否定缩略式 wasn't, weren't）,过去分词been,现在分词being英语的“be”是个特殊动词；有些语言，如马来文等，并没有“be”这样的动词。“Be”除了原形的“be”之外，还有另外七种形式：am, is, are, been, being, was, were.在句子中，“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb)

be是英语动词中比较特殊的一类动词，其使用频率很高，牵涉到各种句型、时态和语态等用法，今天就跟大家分享一下be动词的各类用法。

系动词be作为系动词（也叫连系动词，link verb）的be，是英语学习者接触最早的用法，而且其用法也很多。其基本含义为“是”，基本用法结构为“主语+be+表语”，也就是常说的主系表结构，其中的表语一般都由名词、形容词、数词或表地点、时间等的短语来充当。

要看语句的时态：

如果是一般过去时，就用was/were

如果是一般现在时，就用am/is/are

如果是一般将来时，就用will be

如果是现在完成时，就用have/has been

如果是过去完成时，就用had been

以上内容参考：百度百科-be动词

be动词的用法

英语的“be”是个特别动词；有些语言,如中文和马来文,并没有“be”这样的动词.

“Be”除了原形的'“be”之外,还有另外七种形式：am, is, are, been, being, was, were.

在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).

当主动词时,“be”在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词、地方副词或短语作补足语(The Complement).例如：

1. The man is a science teacher.

2. Mary's new dresses are colourful.

3. I have been there before.

4. Mother is in the kitchen now.

这四个都是陈述句,可以变成疑问句,方法简单,把主语和“be”或助动词对换位置即可：

5. Is the man a science teacher?

6. Are Mary's new dresses colourful?

7. Have I been there before?

8. Is mother in the kitchen now?

当“be”要在祈使句中出现时,它必须借重助动词“do”或“don't”之助,如：

9. Don't be silly!

10. Do be obedient!

11. Don't be a fool!

“Be”有两种缩写法,如下：

12. He's not./He isn't.

13. You're not./You aren't...

但“am + not”的缩写法只有一个：

14. I'm not.

有人用“ain't”, 但这并不是标准英语.

谈过了“be”作主动词的功能,现在看看“be”作助动词时,有些什么用法：

1.“Be + 现在分词”以组成进行式时态(Continuous Tenses),如：

15. Tony's maid is washing his new car.

16. The children are playing in the field.

17. Samuel was eating when I came in.

18. We have been living here since 1959.

2.“Be + 过去分词”以组成被动语态(The Passive Voice),如：

19. Her money in the drawer was stolen.

20. A number of good jobs are taken up byforeigners.

21. David studied in Taiwan but has been trained as a language lecturer in America.

22. Can all the wonderful birds be found in our Bird Park?

23. The disobedient boy was told to stand out- side the classroom.

24. Steps are being taken to reduce traffic con- gestion during peak hours.

25. Dishonest students will be immediately dealt with.

be动词，是英语中的一种词汇用法，一般用来表示“是”的意思，也可表示“成为”的意思。be动词的用法有多种变化形式，如am, is, are，was，were，being，been等，可根据句子中不同的人称、数和时间、型态，选择相应的be动词。例如我是一名学生。翻译为“I am a student.”