1、be动词的一般现在时有三种形式be 动名学 如: 大 如:be 动词的一般现在时有三种形式,即: am, is, are (翻译为“是”)1.如果主语是第一人称 I (我)时, 词用 am。如 : I am a student. 我 是 一 生 。 I am 还 可 缩 写 成 Im Im David. 我 是 卫 。 am 与 not 不 能 缩 写I am not a bad boy.2.如果主语是 we(我们),you (你,你 们) , they (他们,它们,她们)或名词 复数 (两个以上的人或物)时, be 动词必 须用 are 。如: Are you twelve? 你是十二岁
2、吗?Tom and Lily are good friends. 汤姆和莉莉是好朋友。They are at school . 他们在学校。are 与主语还可缩写。如: We are= Were , They are =T heyre, You are = Youre 。而 are 与 not 可缩写成 arent 。如:They arent students. 他们不是学生。3.如果主语是单数名词、不可数名词或单 数第三人称代词 (he, she, it )时,be 动 词用 is 。如 :My mother is a teacher. 我 的妈妈是一名老 师 。 He is a stude
3、nt.他是一名学生。is 也可与主语缩写 ,如 : He is = Hes, My mother is= My mothers 等。但是 This is 不可 缩写。而 is 与 not 可缩写成 isnt 。 如 :This isnt a book. 这不是一本 书。4.句中含有 be 动词的陈述句变一般疑问 句。 把 be 动词提到句首,be 动词要变大写。 注意第一人称变第二人称。回答时用 yes 或no 表示,结构: Yes, 主语+be 动词, No, 主 语 +be 动 词 +not 。 如 : It is a book. 变 为 :Is it a book?5.句中含有 be 动
4、词的肯定陈述句变否定 句。 先找肯定陈述句中的 be 动词,在 be 动词后加 not.如 : It is a book. 变为 : It is not a book. 根据以上叙述我们可以把动词的用法以口诀 的形式表述出来:我(I) 用 am,你 (you) 用 are , is连着他 (he) ,她 (she) ,它 (it) ;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 后疑问否定任你变,not 莫忘记。 句首大写莫迟疑。 Be动词用法练习题: 一 选择正确的 be 动词填空1.I a student.2.We friends.3
5、.He a good boy.4.She my sister.5.They my parents.6.You 11 years old.7.MyI a doctor. 8.father a policeman. 9.We having breakfast.10. Tom from Canada11.Hersistera nurse.12.Theymy goodfriends.13.Hemy brother.14. Sheten.15.Hismotheran actress.二用适当的 be 动词填空1. I a boy. yo u a boy? No, I not.2.ThegirlJacks
6、sister.3.yourbrotherintheclassroom? 4.WhoI?5.Thejeanson thedesk. 6. There a girl in the room. 7. My sister s name Nancy.8.There some apples onthe tree.9.There a boy, two girls, three men and ten women in the park.10.The dog tall and fa t.11.The men with big eyesour teacher.12.Where your mother? S he
7、 at home.13.How old your father?14.Mike and Bob at sch ool.15.Whose dress this? 16. Whose socks they? 17.That my new book. 18.Here a scarf for you.19. Here some bananas for you. 20. The black glovesfor Peter. of shoes 22. There f milk on the 23. Some tea ss. 24.from England? any dictionaries21. This
8、 pairfor you.four bottles o table.in the glaDavid and Helen 25. there in the classroosome bread on theplate.28. You, he and Ifrom China. 29. Heretwo pens and one book. 30.your friends in Beijing?三改写句m? 26. juice in thethere any apple bottle? 27. There子 1. I am a teacher. 否 定 句: 一般疑问句:肯定回答:否定回答: 2.Th
9、ey arenewstudents.否定句:一般疑问句:肯定回答:否定回答:3. He is a good boy at home. 否定句: 一般疑问句: 肯定回答:否定回答:4. We are having an English class.肯 答:否定句:般疑问句:定5.ix.肯 答:否定回答:Bob is in Class One, 否定句: 一般疑问句:定回Grade S回否定回答:6. She is form Jinan. 否定句 般疑问句: 答:否定回答:7. I am a good studentl. 否定句: 一般疑问句:肯 答:8. fice.肯 答:定回否定回答:They
10、 are inthe teacher sof否定句: 一般疑问句:定回否定回答:9. 句:His father is a postman. 否定 一般疑问句:肯 答:定回否定回答:10.We are doing our homework. 否定句: 一般疑问句: 肯定回答:否定回答:11.She is a singer. 否定句: 一 般疑问句:肯定回 答:否定回答:12.They are reading books. 否 定句:一般疑问句: 肯定回 答:否定回答:13.I am a smart boy. 否 定 句: 一般疑问句: 肯定回答:否定回答:14.There is a dog over there. 否定句: 一般疑问句: 肯定回 答:否定回答:15.There are a lot of geese in否定回答:16. His ng boy. 肯 答:brother is a good- looki 否定句: 一般疑问句: 定回否定回答:17. We are friends. 否定句: 一般 疑问句:肯定回 答:否定回答:18. It is sunny today. 否 定 句: 一般疑问句:肯 答:否定回答:
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