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1、英语祈使句讲解 八年级上册unit 8语法 定义：用于表达命令、请求、劝告、 警告、禁止等的句子叫做祈使句 。 祈使句通常省略第二人称的主语； 祈使句的动词都为原形。 Go and wash your hands. Be quiet, please.（Please be quiet.） Be kind to our sister. Watch your steps. Look out！Danger！ Keep off the grass. No parking. 祈使句的类型： 肯定祈使句 否定祈使句 以let开头的祈使句 No+动名词/名词 其它类型祈使句 肯定祈使句 一、直接以动词原形开头
2、,please可在句首,也可在句末。 Do 型。直接以动词原形开头 Be型。Be+表语 Be careful. Be quiet. Please look at the blackboard. Listen to me carefully. Go home at once. 二、肯定祈使句的回答： 肯定回答：Yes,I will. 否定回答：Sorry,I cant.Im busy doing my homework. 否定祈使句 否定祈使句=Dont+肯定祈使句（Dont+V原） Dont talk in class. Dont eat in class. Dont run in the h
3、allway. Dont draw on the wall. Dont throw everywhere. 二、否定祈使句的回答： Of course,I wont. Sorry,I wont do that next time. 以let开头的祈使句 一、Let sb do sth Let sb not do sth Let us make fruit salad. Let your father call me back. Let him not play basketball here. Let them not play the drums now. 二、以let开头的祈使句的回答：
4、Thats a good idea./That sounds good. Oh,No.Its too hot. Oh,No.Lets watch TV at home. No+动名词/名词 No smoking! No smoking in the meeting room! No parking! No photos! 其它类型祈使句 Why dont you do sth? =Why not do sth?相当于Please do sth. Why dont you stand up? =Why not stand up? Why dont you go out to play? = Wh
5、y not go out to play? 1. the popcorn machine. A.Turn on B.Turning on C.To turn on D.Turns on 2. the sandwich before you wash your hands. A.Eating B.Not eating C.Dont eat D.Not eat 3.- late for the meeting next time. -Sorry,I wont. A.Dont B.Dont be C.wont be D.Be not 4.Lets to school by bike. A.not g
6、o B.not to go C.dont go D.not go 5. a banana milk shake is easy. A.Make B.Makes C.Making D.Made 6.-Dont boil the vegetable too long. - . A.Yes,I wont B.Yes,I will C.No,I will D.No,I wont 7. adding some relish to the soup? A.Why not B.Why dont C.What about D.What for 8.-Dont drive too fast!Its dangerous. - .I will slow down减速. A.Great B.Certainly C.Cool D.Sorry 9.-Jace,lets play tennis. - . A.That sounds good B.Yes,I do C.Dont worry D.Youre welcome 10.-Please cut up the two bananas. - . A.Yes,I can B.Yes,I will C.No,I dont D.Sorry,I cant
