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1、概念和结构:祈使句是用来提出要求,建议或发出命令的句子。它的主语通常是第二人称you(常被省略掉),谓语动词是原形,句尾 是句号或感叹号。第1页/共13页祈使句可分为两种形式:肯定形式和否定形式1.肯定形式一般以动词原形开头。Eg:Open the door,please.2.否定形式是在句首谓语动词前加dont,有时也用Never.Eg:Dont be late for the class,please.Never say goodbye.第2页/共13页3.特殊情况下。主语是第一人称和第三人称时,表示建议做某事,通常用let来开头。Eg:Let me put it away.Let her
2、 come home!Lets go swimming!Let him walk fast.第3页/共13页4.除了可以用谓语动词来表示祈使句外,还可以用名词,形容词,副词等短语表示祈使句。Eg:Just a moment.(名词短语)Quiet,please !(形容词短语)Faster!Faster!(副词短语)第4页/共13页5.祈使句+or+简单句,表示.否则.祈使句+and+简单句,表示就.Eg:Be quick,or well be late.走快点,否则我们要迟到的。Study hard,or you wont pass the exam.努力学习,否则你将考试不及格的。Go a
3、long the street,and youll see a post office.沿着这条街走,你就会看见一个邮局的。第5页/共13页6.一般疑问式的祈使句的如何表示:1)主语是第一人称的时候,可以借助动词shall来表示。Eg:Shall I go to a park this afternoon?Shall we read books together?2)主语是第二人称的时候,可以借助助动词will来表示。Eg:Will you help him?第6页/共13页1.Be careful!小心!2.Stand up/down.起立/坐下。3.Be quiet.安静!e here.过
4、来。5.Go there.去那里。6.Go/by this way走这边.7.Dont be late.别迟到。8.Dont be noisy.不要喧哗。9.No smoking.禁止吸烟。10.No parking.禁止停车。11.Look out!小心!7.表示祈使句的词组:第7页/共13页翻译下列各句 1.咱们一起玩吧!Lets play together!2.请不要迟到.Dont be late.3.回答这个问题.Answer this question.4.我来打开窗户好吗?Shall I open the window?5.你和我们一起去好吗?Will you go with us
5、?第8页/共13页翻译下列句子(英译汉)1.Be sure to lock the door before you leave the room.在你离开教室前务必要锁门!2.Lets go at once.我们立即出发吧!3.Let me try again.让我再试试。4.Let Tom go there himself.让Tom自己去那。第9页/共13页选择题:1._ talk loudly in the reading room.A.Not B.Be not C.Dont D.Doesnt2.Go down the street and turn _ right.The restaur
6、a is _ the left.A./;at B.to;to C./;on D.to;on3.The sigh“No left turn”tells us“_”.A.Dont turn left B.Turn left C.Go straight D.Turn right CCA第10页/共13页4.-Sorry,Joe.-Dont call me“Joe”,and _ you forget it!A.do B.didnt C.did D.dont5.Stand over there,_ youll be able to see it better.A.or B.and C.but6.Lose
7、 one hour in the morning._ you will be looking for it the rest of the day.A.but B.and C.or7.Start out right away,_ you will miss the first train.A.and B.but C.orDBCC第11页/共13页8.Mary,_ here,everybody else stay where you are.A.come B.comes C.coming9._ for the glass.It OK.Im wearing shoes.A.Look out B.Go out C.Walk out10.Im sorry,Im late._.A.Dont be late next time.B.It doesnt matter.Im also late.C.Never mind.AAA第12页/共13页感谢您的观看!第13页/共13页
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