《句法三祈使句》PPT课件.ppt

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1、祈使句,Imperative sentence,祈使句的概述,祈使句是用来表示请求，命令，劝告，建议等的句子。祈使句习惯上常常省略主语，句末用感叹号或是句号，朗读时常用降调。,祈使句的形式,1.祈使句的肯定式2.祈使句的否定式3.祈使句的let式4.祈使句的强调式5.不含动词的祈使句,祈使句的肯定式,在祈使句的肯定式中，谓语动词要使用原型。Look at the blackboard.Sit down please!Open the door please!Keep away from it!,祈使句肯定式练习,连词成句1.TV,please,watch_2.please,clean,desk

2、s,chairs,and,the_3.apples,me,give,some_,Please watch TV.,Please clean the desks and the chairs.,Give me some apples.,祈使句的否定式,祈使句的否定式中，谓语动词用dont/never+动词原形Dont worry.Never mind.Dont turn off the light!Dont play football on the road.,祈使句否定式练习,将下列祈使句变为否定式。1.Give me some apples.2.Open the window,please.

3、3.Be quiet.4.Please watch TV.5.Run around the playground.,祈使句的let式,以let引导的祈使句，常用与一、三人称，结构为：Let+人称代词（宾格）+动词原形Let me see.Let me check.Lets go to the seaside.Lets go home.,祈使句的let式练习,下面的句子是祈使句吗？如果是请填Y不是请填N.1.Sit down,please.()2.You should do your homework carefully.()3.Let me have a look!()4.Lets go to

4、 the park!()5.Dont leave me alone.(),Y,N,Y,Y,Y,祈使句的强调式,动词前加do，表示强调。Do study hard at school.在学校一定要努力学习。Do come here on time.务必要准时来到这里。Do finish your homework.一定要完成你的作业。Do be quick.一定要快一点。,不含动词的祈使句,由一个单词、词组或是短语组成的祈使句。Quick!No smoking!No drinking!No talking!,不含动词的祈使句练习,给下列标志选择适当的英文标语No parking.No smoki

5、ng.No fishing.No drinking.No photos.No swimming.,一、用括号内所给动词的适当形式填空。1._(not,be)late.2._(dust)the dressing table.3._(not,speak)with your mouth full of food.4._(not,talk)and _(read)a book.5._(not,drop)the nice vase,Sam.6._(look)out!A car is coming.7._(give)us ten years and just see what our country wil

6、l be like.8._(not,let)the baby cry.9.Open the window and _(shut)the door.10.Lets _(sweep)the floor.,祈使句练习题,Dont be,Dust,Dont speak,Dont talk,read,Dont drop,Look,Give,Dont let,shut,sweep,二、将以下祈使句改为否定式1.Come here early.2.Ask him.3.Please wait for her.4.Read the book carefully.5.Sit under the tree,please.6.Lets go there together.,祈使句练习题,Dont come here early.,Dont ask him.,Please dont wait for her.,Dont read the book carefully.,Dont sit under the tree,please.,Lets not go there together.,