牛津译林英语7年级上册各单元语法知识汇总及练习Unit 1 动词Be的一般现在时be动词有人称和数方面的变化。

对于动词be，不管是在肯定句、否定句还是一般疑问句中都起着非常重要的作用。

下面分别介绍动词be的一些特定用法。

一、be动词的意义动词be (am, is, are)说明身份、年龄、状态等I am a student.I am 13 years old.I’m very healthy.二、be动词的人称变化：第一人称I，后面的动词用am;第三人称he/she/it, 后面的动词用is;第一人称复数we, 第二人称you, 第三人称复数they，后面的动词用are.如果主语是代词，非正式行文中，Be与前面的主语可以缩写：I am=I'm You are=You're She is=She's He is=He'sIt is=It's We are=We're They are=They're非正式行文中，is/are 与not可以缩写。

例：is not=isn't are not=aren't主要句式：1. 肯定句式主语＋be( ____\ ____\ _____)＋其他。

2. 否定句式主语＋be( ____\ ____\ _____)＋not＋其他。

3. 一般疑问句将be( ____\ ___\ ___)提前,即:Be( ____\ ___\ ___)＋主语＋其他？（第一人称变为第二人称）肯定回答：Yes,主语（必须是_____词）＋be( ____\ ____\ _____)（主语和Be动词不能缩写）否定回答：No,主语（必须是_____词）＋be( ____\ ____\ _____)＋not（必须缩写____\ _____）肯定：It is a book. →否定：It is not a book. /It isn’t a book.I am a student. →否定：I am not a student. /I’m not a student.You are my friend. →否定：Yo u are not my friend. /You aren’t my friend.一般疑问句：回答一般疑问句时，主语必须是代词肯定：I am a student. → 一般疑问：Are you a student?She is from China. → 一般疑问：Is she from China?They are nurses. → 一般疑问：My book is on the table. → 一般疑问：John 是中国人吗？→ 一般疑问：这本书有趣吗？→ 一般疑问：一、用am, is, are 填空1. I _____ a student.2. You ____ a doctor.3. ____she from Jinan?4. _____you American?5. He _____ in Class 4, Grade 1.6. It_____ a car.7. They ____ cars8. ____ your mother in China?9. ____your friends in New York?10. What ____her name?11. These _____ buses.12. Those _____oranges.13. Where _____ her mother?14. How old _____your teacher?15. What class _____ you in?16. —I ______ a boy. ______ you a boy?—No, I _____ not.17. T he girl______ Jack’s sister.18. The dog _______ tall and fat.19. The man with big eyes _______ a teacher.20. ______ your brother in the classroom?21. —Where _____ your mother?—She ______ at home.22. How _______ your father?23. Mike and Liu Tao ______ at school.24. Whose dress ______ this?25. Whose socks ______ they?26. That ______ my red skirt.27. Who ______ I?28. The jeans ______ on the desk.29. Here ______ a scarf for you.30. Here ______ some sweaters for you.31. The black gloves ______ for Su Yang.32. This pair of gloves ______ for Yang Ling.二、在下面的短文中填上恰当的be动词。

I ______ a girl. My name _______ Mary. I ______ in Class 2, Grade 7. I ______ 12 years old. Here ______ my family photo. Look! These ______ my parents and those _______ my grandparents. This boy ______ my brother. He ________ 15 years old now. That ______ my cat, Mimi. It ______ very lovely.Unit 2 行为动词的一般现在时什么情况下用行为动词的一般现在时呢？①当这个动作经常发生或表示习惯性的动作时，通常用一般现在时，它经常与表示频度的时间状语连用，如，当句子中有every day, every year ,on Sunday, in the morning ,often, sometimes, usually, at one o’clock,等词时，用一般现在时。

He gets up at 6 o’clock.She usually watches TV in the evening.Sometimes he goes to school by car.Tom often flies a kite on Sunday.②表示目前的爱好、能力等。

She sings very well.③表示不受时限的客观事实。

Fish live in water.只有第三人称单数动词才要变，其他人称（I, you ,we ,they）则用动词的原形。

当主语是第三人称单数时，行为动词的一般现在时通常有三种变化：1、多数在动词后加s。

play—plays like—likes read—reads sing—singsdance—dances cook—cooks look—looks2、以s，x，sh，ch，o结尾的动词加es。

go—goes wash--washes watch-watches catch-catches do-does 3、以辅音字母加y结尾，把y改i再加es。

fly—flies study—studies try-tries4、特殊变化have-has写出下列动词的正确形式：1. I (go) to school at seven in the morning.2. Mike (do) his homework at eight in the evening.3. His father often (read) books in the library on Saturday.4. My mother usually (watch) TV plays at home.5. My cousin sometimes (play) cards with me.6. —you often (study ) after school?—Yes , I do.7. Mike and Tom usually (fly) kites on Sunday.8. They (go) to school by bus every day.9. She (go) to school by bus every day.10. We usually (listen) to the radio in the morning.11. He usually (listen) to the radio in the morning.12. —he usually (listen) to the music at home?—No, he主要句式：一、否定句：一般现在时的否定式是在动词原形前加助动词do not (don’t )；主语是第三人称单数时在动词原形前加助动词does not (doesn’t)，其结构为：1）主语+ don’t+ 动词原形They don’t work here.I don’t go to school on Sundays.2）主语(第三人称单数)+ doesn’t+ 动词原形She doesn’t like sports.The boy doesn’t study hard.注意*：如句中用了never（从不），hardly（很少、几乎不）等词来表示否定意义，就不能再使用助动词don’t 或doesn’t , 试比较：I don’t know you.I hardly know you.I don’t hardly know you.二、疑问句：一般现在时的疑问式在句首加助动词do, 主语为第三人称单数时在句首加does,其结构是：1）Do + 主语+ 动词原形…?They live near our school.→Do they live near our school?The students like learning English.→Do the students like learning English?2)Does + 主语（第三人称单数）+ 动词原形…?He watches TV every evening.→Does he watch TV every evening?My father teaches Chinese.→Does your father teach Chinese?简略回答用助动词do/does 和don’t/doesn’t 代替行为动词。