be動詞，意思和用法很多，一般的意思是：是，此種用法，有多種變化形式，is，am，are，was，were，being，been，to be.另外，be動詞還有成為的意思。下面小編給大家分享了有關be動詞的英語語法知識，一起來看看吧!
be動詞的用法口訣
英語語法順口溜：
我用am，你用are，is連著他，她，它;
單數名詞用is，複數名詞全用are。
變疑問，往前提，句末問號莫丟棄。
變否定，更容易，be後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，並沒有“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”在性質上屬於接系動詞(The Linking Verb), 後面要有名詞、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豔
3. I have been there before.
我以前去過那裡
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”, 但這並不是標準英語。
談過了“be”作主動詞的功能，現在看看“be”作助動詞時，有些什麼用法：
【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.
be動詞和助動詞
1. be動詞(am/is/are)
主語 be動詞(原形) be動詞(過去式)
I am was He/she/it is was
We/you/they are were
2.助動詞(do/does/did)
問句 答句
Do+非第三人稱單數
+動詞原形…?
…do/don't
Does+第三人稱單數
…does/doesn't
Did+所有主格
…did/didn't
問句 答句
What do you/they/we…
+動詞原形?
I/They/We+動詞原形…。
What does he/she/it…
He/She/It +(動詞+S)….
What did you/they/we/ he/she/it…
I/They/We/ He/She/It +動詞過去式。
there be; be going to和have got的用法
英語語法順口溜：
there be的位置和用法：
說明何時何地有，
there be在主語前。
隨著主語第一個，
be的形式做變換。
be going to的用法：
be going是助動詞，
後跟加to不定式。
說明“準備”或“就要”，
時間人稱只變be 。
have+got：
have作為動詞“有”，
情態動詞have to;
have got慣用語，
got可有也可無。
若變否定和疑問，
去掉got再加do;
或把have提句首，
not加在have後。
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