be动词有哪些分别怎么用

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 be动词的用法

 包括一般形式am、is、are.主语为第一人称“我”时用am.主语为第二人称时用are.主语是单三人称时用is。

 第三人称单数有哪些:

 1. 第三人称单数代词有:he, she, it。

 如:

  How old is she? 她多大了?

  Is he at home today? 今天他在家吗?

  Is it your cat? 这是你的猫吗?

 2. 指示代词this, that。

 如:

 That's a Chinese car. 那是辆中国小汽车。

 This is my book. 这是我的书。

 3. 单数可数名词。如:Lucy, a cat, my book, an orange, the bag等。

 如:

  Lucy is a good girl. 露西是个好女孩。

 Her father is a teacher. 她爸爸是教师。

 4. 不可数名词可被看作第三人称单数。如:

  There is some money in the purse. 在钱包里有些钱。

 5. 当数字或字母作主语时,看作第三人称单数。

 如:

  “6” is a lucky number. “6”是个吉利数字。

 “I” is a letter. “I”是个字母。

 数字的加、减、乘、除的结果常被看作第三人称单数。

 如:What is one and two? 一加二等于几?

 Eight minus five is three. 八减五等于三。

 Be动词的用法口诀?:

 我用am,你用are,is连着他,她,它;?

 单数名词用is,复数名词全用are。?

 变疑问,往前提,句末问号莫丢弃。?

 变否定,更容易,be后not莫忘记。?

 疑问否定任你变,句首大写莫迟疑。

 ?一.选择

 1.She ______ Miss He.?A.beB.amC.is

 2.I ______ sorry.A./B.amC.are

 3.Here ______ my ball.?A.isB.areC.am

 4.You ______ number eight.A.are?B.isC.am

 ?5.What_______this??A.isB.are?C.be

 6.Helen____ a student.A.be?B.amC.is

 7.Those _____oranges.?A.is?B.are?C.am

 8. Howold _____yourteacherA.beB.amC.is

 9. Where _____ her mother?A.are?B.isC.am

 10.?Eric and Kathy ____ my students.A.are?B.isC.am

 11.?Your books ____ not good.?A.isB.are?C.be

 12.?He?___?a boy.?A.beB.amC.is

 13.?It ___ my dog.A.isB.are?C.be

 14.Whose socks ______ they?A.are?B.isC.am

 15. _______there any chairs in the classroom. A. Is?B. AreC. Am

 16 .The man with big eyes _______ a teacher.A.be?B.am?C.is

 17.How _______ your fatherA.isB.areC.be

 18.Mike and Liu Tao ______ at school.A.are?B.isC.am

 19.I_____?astudent.A.be?B.am?C.is

 20.?They ______ teachers.A.is?B.areC.be

 21.This_____my mother.A.areB.is?C.am

 22._____ you a studentYes,I am.A.Am?B.Is?C.Are

 二.写出下列词适当形式:

 1.I am (缩略形式) ______2.is (复数)______

 3.we are (缩略形式) ______?4.are not(缩略形式) ______

 5.is not (缩略形式) ______?6.can not(缩略形式) ______?

 7.she's(完整形式) ______8.it's(完整形式) ______?

 9.they're(完整形式) ______?10.don't(完整形式) ______

 三.?将下列句子变成否定句和一般疑问句

 1. His brother is a teacher.

 否定句:?

 一般疑问句:

 2.Those are his parents.

 否定句:

 一般疑问句:

 3.I’m 14 years old.

 否定句:

 一般疑问句:

 ?4.The ruler is on the table.

 ?否定句:

 一般疑问句:

 ?5.Tom is my teacher .

 否定句:

 一般疑问句:

 6.My shoes are 20 yuan .

 否定句:

 一般疑问句:

 7.This is a pen .

 否定句:

 一般疑问句:

 8.My name is Andy.

 否定句:

 一般疑问句:

 9.We are twins.

 否定句:

 一般疑问句:

 10.He is my brother.

 否定句:

 一般疑问句:

 11.I am a teacher.

 否定句:

 一般疑问句:

 12.She is my mother.

 否定句:

 一般疑问句:

 13.This is Miss Zhao.

 否定句:

 一般疑问句:

 14.She is a new student.

 否定句:

 一般疑问句:

 15.Tom is my best friend.

 否定句:

 一般疑问句: