小升初英语语法复习：be动词的用法口诀
be动词的用法：be (be/is/are/am/was/were)
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现在时 I am, you are, he is, we are, you are, they are (缩略式 Im, youre, hes, were, youre, theyre), (否定缩略式 Im not, isnt, arent), 过去时 I was, you were, he was, we were, you were, they were (过去时否定缩略式 wasnt, werent), 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羽泉最新专辑
2. Marys new dresses are colourful.
玛丽的新衣服彩鲜艳
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
可：
5. Is the man a science teacher?
6. Are Marys 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“dont”之助，如：
孔孝真男友 9. Dont be silly!
风云必胜下载 10. Do be obedient!
11. Dont be a fool!
南方有乔木的演员【“Be”有两种缩写法，如下：
12. /
13. /
【但“am + not”的缩写法只有一个：
14. Im not.
有人用“aint”, 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：
北京一夜 歌词 15. Tonys 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.
分开以后 郎恒 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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