be动词用法大总结大总结

be动词用法大总结大总结
be动词用法大总结大总结

Be有两种形式

第一,系动词,所构成的句子结构为主系表,表现形式有:is, am, are, was, were,在句子中翻译为“是”

如:

I am a girl. 我是个女孩。

第二,助动词,无实际意义,与其他动词一起构成时态。表现形式有:is, am, are, was, were 以及Be原形。

如:

I am reading. 我正在看书。(进行时)

be动词的用法

be

[bi:]

vi

现在时I am, you are, he 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 V erb)或助动词(The Auxiliary V erb).

【当主动词时,“be”在性质上属于接系动词(The Linking V erb), 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. Y ou're not...../Y ou 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 V oice),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.

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