初一英语个性化辅导Review of Unit4【主要语法】一、知识点1、定义：祈使句是用来表示请求、命令、叮嘱、邀请、劝告或祝愿等的句子。
2、祈使句的结构：通常省略主语you,以动词原形开头，末尾可用句号或感叹号。
2、特点：祈使句没有疑问句的形式，一般只有肯定和否定两种形式。
Go and wash your hands. (表命令)Be quite, please.（Please be quiet.）（表请求）Be kind to your sister.（表劝告）Watch your steps.（表警告）No parking. (表禁止)二、重点：祈使句的不同形式(1)V型：即以实义动词开头的祈使句，这种祈使句的常用结构为：动词原形（v）+宾语（+其他）Eg: 把门关上。
______ the door.起立！______ up!（2）B型：即以系动词be开头的祈使句，这种祈使句的常用结构：be+形容词/ 名词Eg: 做个好学生。
_____ a good student.安静！______ ______!（3）L型：即let型（Let+宾语+动词原形+其他）Eg: 让我来读吧_____ _____ read it.咱们去爬山吧______ go to the mountains.（4）D型：即祈使句的否定形式（一般在动词上否定，也可以用否定副词（never）来表示）A.Don’t be +其他成分（形容词、名词或介词短语））Eg: 别生气！______ _____angry.不要迟到。
______ _____ late.注意：①在这种句型中，be不能省略②否定副词not不可置于be之后B. Don’t +动词原形+其他Eg: 别在教室里吃东西。
______ ______ in the classroom.别像那样和父母亲讲话______ ______ ______ your parents like that!C. Let引起的祈使句有两种否定形式a. Let+宾语+not+动词原形+其他Let her not do that.Let’s not think about it. It’s only a waste of time.b. Don’t+ let+宾语+动词原形+其他Don’t let Jim do that.Don’t let us go, please.三、难点:1、特殊形式的祈使句(1)在公共场合的提示语中，否定祈使句常用“No＋名词/ V-ing形式”结构，表示“禁止做某事”。
Eg: 不许停车！No parking!禁止游泳！_____ ________!不许交谈！_____ ________!(2). 在表达请求或劝告时，有时为了表示委婉的语气，可以在句首或句末please，但是如果please加在句末，应用逗号将其与前面的部分隔开。
Eg: 请进Please _____ _____. = _____ ____, please.请坐Please _____ _____. = _____ ____, please.(3). 在意思比较明显的情况下，可以把谓语动词省略。
This way, please.(4). 有时为了加强语气，可以在动词前使用do.Do be careful！一定要小心！(5). 有时为了强调对方，也可加上主语you，人名或everybody, anybody等不定代词。
You sweep the floor and I clean the window.Stand up, everybody.(6).有时为了明确向谁提出请求或发出命令，可加称呼语，但称呼语要与句子用逗号隔开。
Put the shirt on the bed, Jim.2、祈使句的回答祈使句的动作通常是表示将来发生的动作，所以回答祈使句时，一般用will 或won’t。
在回答具有否定意义的祈使句时，要注意两点：1)形式一致(即Yes与will保持一致；No与won’t保持一致)2)意思相反(即Yes是“不”的意思；No是“是”的意思)。
在回答时，要注意分析上下文语境中所提供的条件。
例如：--- Don’t go out, please. It’s raining heavily outside.请不要出去。
外面雨下得很大。
---- Yes, I will. I have to meet my brother at the airport.不行，我得去机场接我弟弟。
三、考点：祈使句用于两个重要句型中（1）．“祈使句+and+表结果的陈述句”用来叙述肯定的条件。
Eg: Hurry up and you’ll catch the train.Study hard and you can make progress everyday.（2）．“祈使句+or(else)+表结果的陈述句”用来叙述否定的条件，or(else)表示“否则；要不然”。
Eg: Hurry up，or you’ll miss the train．考题精选1. Please ____, they’re having a meeting.A. not be so noisyB. be quiteC. mustn’t talkD. no speaking2. ____ to meet me at the station. I’ll be waiting there.A. Not to forgetB. Not forgetC. Forget notD. Don’t forget3. –Don’t forget to come to my birthday party tomorrow. -I ____.A. don’tB. won’tC. can’tD. haven’t4. If you are tired, ______ a rest.A. haveB. havingC. to haveD. had5. ______ me go. It is very important for me.A. Do letB. Let doC. Doing letD. To do let6. He is not honest. ______ believe him.A. NotB. Don’tC. To notD. Not to7. _____ up early tomorrow, or you can’t catch the train.A. GettingB. GetC. To getD. Got8. _____ in the street. It’s dangerous.A. Not playB. Not to playC. Don’t playD. Don’t to play9. Please ______ me some money, will you?A. lendB. lendingC. borrowD. borrowing10. The film is about to begin. Please ______ seated.A. beB. areC. isD. being11. ____ down the radio. The baby’s asleep in the next room.A. TurningB. To turnC. TurnedD. Turn12. Lucy, ____ the door or someone will come in.A. closeB. closesC. not closeD. is closing13. ____ and play football in the street after lunch.A. Let’s not to goB. Let’s not goC. Let’s don’t goD. Not let’s go14. A sign with the words“____” is often found in a bus.A. Not parkingB. Not smokingC. No parkingD. No smoking15. ____ Chinese in you English class.A. Not speakB. Don’t speakC. Speak notD. Don’t speaking16 . _____ the boxes. You may use them later.A. KeepB. KeepingC. To keepD. Kept17. The TV is too loud. Please________.A. turn it downB. to turn it downC. turn down itD. to turn down it18.. _______ cross the road until the traffic lights turns green.A. NotB. Won'tC. Doesn'tD. Don't19.. Do you know the girl ______under the tree?A. standB. to standC. standingD. stood20. Kate, _______ your homework here tomorrow.A. bringB. bringsC. to bringD. bringing二. 用括号内所给动词的适当形式填空。
1. It’s an important meeting. __________ (not, be )late.2. ____________ (not,make) any noise! Your mother is sleeping.3. ____________ (not, speak) with your mouth full of food and ____________ (be) polite.4. ____________ ( not, talk) and ____________ (read) aloud.5. ____________ (not,leave) your homework for tomorrow, Larry.6. ____________ (look) out! A car is coming.7. ____________ (give) us ten years and just see what our country will be like.8. ____________ (not, let) the baby cry.9. Wear more clothes or you ____________ (catch) a cold.10. Let’s ____________ (not, say) anything about it.三、句型转换11. Will you please read it again more slowly? （改为祈使句）_____ _____ again more slowly, please.12. If you don't listen to me, I'll go. （改为同义句）_____ _____ me, or I’ll go.13. Let's watch the sports games. （改为反意疑问句）Let's watch the sports games, _____ _____?14. The teachers often tell the students not to be careless. （改为祈使句）_____ _____careless, please.15. Please sit next to Nancy. （改为否定句）_____ _____ next to Nancy.16. Don't forget to turn off the lights, please. （改为反意疑问句）Don't forget to turn off the lights, _____ _____?17. If you move, you'll die. （改为同义句）_____ _____, or you'll die.18. Come to my house tomorrow. （改为反意疑问句）Come to my house tomorrow, _____ _____?19. 这是一个坏了的被子。