be的用法口訣有哪些

　　下面是學習啦小編為同學們整理了be 的用法口訣 ，希望大家學以致用!

　　我用am，你用are，is連著他，她，它;

　　單數名詞用is，復數名詞全用are。

　　變疑問，往前提，句末問號莫丟棄。

　　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動詞的用法：be (be/is/are/am/was/were) vi

　　現在時 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 I was, you were, he was, we were, you were, they were (過去時否定縮略式 wasn't, weren't), 過去分詞been, 現在分詞being

　　英語的“be”是個特殊動詞;有些語言，如馬來文等，并沒有“be”這樣的動詞。

　　“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”可以是主動詞(The Principal Verb)或助動詞(The Auxiliary Verb)

　　例句對照

　　【當主動詞時，“be”在性質上屬于接系動詞(The Linking Verb), 后面要有名詞、形容詞、地方副詞或短語作補足語(The Complement)。例如：

　　1. The man is a science teacher.

　　這個男子是一位科學教師

　　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.

　　母親現在在客廳看電視

　　【這四個都是陳述句，可以變成疑問句，方法簡單，把主語和“be”或助動詞對換位置即可：

　　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“be”要在祈使句中出現時，它必須借重助動詞“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：

　　14. I'm not.

　　有人用“ain't”, 但這并不是標準英語。

　　談過了“be”作主動詞的功能，現在看看“be”作助動詞時，有些什么用法：

　　【1.】“Be + 現在分詞”以組成進行式時態(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.】“情態動詞+Be + 過去分詞”以組成被動語態(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.