英语语法顺口溜(29):be动词的用法口诀

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英语语法顺口溜:be动词的用法口诀

be 的用法口诀

我用am,你用are,is连着他,她,它;
单数名词用is,复数名词全用are。 
变疑问,往前提,句末问号莫丢弃。 
变否定,更容易,be后not莫忘记。 
疑问否定任你变,句首大写莫迟疑。

be动词的用法:be (be/is/are/am/was/were)

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)

例句对照

【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.
这个男子是一位科学教师

2. Mary's new dresses are colourful.
玛丽的新衣服色彩鲜艳

3. I have been there before.
我以前去过那里

4. My mother is watching TV in the room.
母亲现在在客厅看电视 

【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.】“情态动词+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.

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