be动词

英语中的be动词也叫系动词，具体体现形式有am, is, are 三种。
动词形态：动词原形 be；
                     一般现在时：am，is，are；
                     一般过去时：was，were； 
                     完成时态：have/has/had been
                     进行时态和动名词形式：being；
                     过去分词：been

用法儿歌：我(I)后am, 你(you)后are;
                     is 管着他(he)、她(she)、它(it);
                     单数is, 复数are；
                    肯定变否定，请把not加；
                    若要变疑问，尽管往前拉。
                     肯定句：主语+be(am, is, are)+其它.
                     否定句：主语+be(am, is, are) +not +其它
                     一般疑问句：Be(Am, Is, Are) +主语+其它
                    肯定答语：Yes, 主语（代词）+be(am, is, are)
                    否定答语：No, 主语（代词）+be(am, is, are) +not.
                   特殊疑问句：疑问词+be(am, is, are) +其它

 

be动词的意思　　be动词意思和用法很多，一般的意思是：是，此种用法，有多种变化形式，is，am，are，was，were，being，been，to be.另外，be动词还有成为的意思。根据句子中不同的人称、数和时态，应该选择相应的be动词。

编辑本段be动词的用法

　　be （be/is/are/am/was/were)

　　[bi:]

　　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)

编辑本段例句对照

　　【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.】“事/物人 +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.

用am, is, are 填空

1. I ______ a boy. ______ you a boy? No, I _____ not.
2. The girl______ Jack's sister.
3. The dog _______ tall and fat.
4. The man with big eyes _______ a teacher.
5. ______ your brother in the classroom?
6. Where _____ your mother? She ______ at home.
7. How _______ your father?
8. Mike and Liu Tao ______ at school.
9. Whose dress ______ this?
10. Whose socks ______ they?
11. That ______ my red skirt.
12. Who ______ I?
13.The jeans ______ on the desk.
14.Here ______many oranges for you.
15. Here ______ some sweaters for you.
16. The black pants ______ for Su Yang.
17. This pair of boots ______ for Yang Ling.
18. There some milk for me.
19. Some tea ______ in the glass.
20. Gao shan's shirt _______ over there.
21. My sister's name ______Nancy.
22. This ______ not Wang Fang's pencil.
23. ______ David and Helen from England?
24. There ______ a girl in the room.
25. There ______ some apples on the tree.
26. _______ there any kites in the classroom?
27. _______ there any apple juice in the bottle?
28. There _______ some bread on the plate.
29. There _______ a boy, two girls, three men and ten women in the park.
30. You, he and I ______ from China.