be动词有哪些分别怎么用

1、be动词有哪些分别怎么用be动词的用法am、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。女口：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。女口：That's a Chi nese 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。女口： Lucy, a cat, my bo

2、ok, an orange, the bag 等。 女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 pu rse. 在钱 包里有些钱。o“ 6”5. 当数字或字母作主语时，看作第三人称单 数。如：is a lucky number. 是个吉利数字“ I ” is a letter.是个字母。”6. 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 mi n

3、us five is three.八减五等于. oBe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Cis1SheMissHe. A.be B.am 2.IA./ B.amsorry.3Heremyball. A.is B.areC.areC.am4Youn umbereight. A.are B.isC.am5Whatthis ?AisB.areC.be6Helenstude nt. A.beB.amC.is7Thoseoran g

4、es. A.isB.areC.am8. How oldyour teacher?C.isA.beB.am9. Wherehermother?A.areB.isC.am10. Eric and Kathymystudents. A.are B.isC.am11. Y our booksnotgood.A.isB.areC.be12. Heboy.A.beB.amC.is13. Itmydog.A.isB.areC.be14Whose socksthey?A.are B.isC.amthere any chairs in theclassroom. A. Is B. Are C. Am15.16

5、.The man with big eyesteacher. A.be B.amC.is17Howfather?yourA.isB.are C.be18Mike and Liu Taoatschool.A.areB.isC.am19a stude nt.A.beB.amC.is20. They teachers.A.isB.areC.be21.Thismymother.A.areB.isC.amam.you a stude nt? Y es,IA.AmB.IsC.Are.写出下列词适当形式22.1am （缩略形式）_数）3.we are （缩略形式）略形式）5.is not （缩略形式）_略形

6、式）7.she's（完整形式）_式）9.they're（完整形式）整形式）2is （复4.are not（缩6can not（缩8.it's（完整形10.don't（完三.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:2Those are his pare nts. 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： 5Tom is my teacher .否定句：般疑问句：6.My shoes are 20 yua n 否定句：般疑问句:7This is a pen 否定句：般疑问句:8My n ame is Andy.否定句：般疑问句:9We are twins.否定句:10He is my brother.否定句：般疑问句：11am a teacher.否定句:般疑问句:12.She is my mother.否定