be的用法口訣
我用am，你用are，is連著他，她，它；
單數(shù)名詞用is，復(fù)數(shù)名詞全用are。
變疑問，往前提，句末問號(hào)莫丟棄。
變否定，更容易，be后not莫忘記。
疑問否定任你變，句首大寫莫遲疑。
be動(dòng)詞的用法：be (be/is/are/am/was/were)
vi
現(xiàn)在時(shí)：I am, you are, he is, we are, you are, they are (縮略式 I'm, you're, he's, we're, you're, they're)，(否定縮略式I'm not, isn't, aren't)。過去時(shí)：I was, you were, he was, we were, you were, they were (過去時(shí)否定縮略式wasn't, weren't), 過去分詞been, 現(xiàn)在分詞being
英語的“be”是個(gè)特殊動(dòng)詞；有些語言，如馬來文等，并沒有“be”這樣的動(dòng)詞。
“Be”除了原形的“be”之外，還有另外七種形式：am, is, are, been, being, was, were。
在句子中，“be”可以是主動(dòng)詞(The Principal Verb)或助動(dòng)詞(The Auxiliary Verb)。
例句對(duì)照
【當(dāng)主動(dòng)詞時(shí)，“be”在性質(zhì)上屬于接系動(dòng)詞(The Linking Verb)，后面要有名詞、形容詞、地方副詞或短語作補(bǔ)足語(The Complement)。例如：
1. The man is a science teacher.
這個(gè)男子是一位科學(xué)教師
2. Mary's new dresses are colourful.
瑪麗的新衣服色彩鮮艷
3. I have been there before.
我以前去過那里
4. My mother is watching TV in the room.
母親現(xiàn)在在客廳看電視
這四個(gè)都是陳述句，可以變成疑問句，方法簡(jiǎn)單，把主語和“be”或助動(dòng)詞對(duì)換位置即可：
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?
當(dāng)“be”要在祈使句中出現(xiàn)時(shí)，它必須借重助動(dòng)詞“do”或“don't”之助，如：
9. Don't be silly!
10. Do be obedient!
11. Don't be a fool!
“Be”有兩種縮寫法，如下：
12. He's not...../He isn't....
13. You're not...../You aren't...
但“am + not”的縮寫法只有一個(gè)：
14. I'm not.
有人用“ain't”, 但這并不是標(biāo)準(zhǔn)英語。
談過了“be”作主動(dòng)詞的功能，現(xiàn)在看看“be”作助動(dòng)詞時(shí)，有些什么用法：
【1.】“Be + 現(xiàn)在分詞”以組成進(jìn)行式時(shí)態(tài)(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.】“情態(tài)動(dòng)詞+Be + 過去分詞”以組成被動(dòng)語態(tài)(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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