英语祈使句八上unit8语法市公开课一等奖百校联赛获奖课件.pptx

英语祈使句讲解英语祈使句讲解八年级上册八年级上册unit 8语法语法第1页定义：定义：用于表示命令、请求、劝说、警告、禁止等句子叫做祈使句。祈使句通常省略第二人称主语；祈使句动词都为原形。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.第2页祈使句类型：祈使句类型：必定祈使句否定祈使句以let开头祈使句No+动名词/名词其它类型祈使句第3页必定祈使句必定祈使句一、直接以动词原形开头一、直接以动词原形开头,please可在句首可在句首,也可在句末。也可在句末。Do 型。直接以动词原形开头型。直接以动词原形开头Be型。型。Be+表语表语Be careful.Be quiet.Please look at the blackboard.Listen to me carefully.Go home at once.二、必定祈使句回答：二、必定祈使句回答：必定回答：必定回答：Yes,I will.否定回答：否定回答：Sorry,I cant.Im busy doing my homework.第4页否定祈使句否定祈使句否定祈使句否定祈使句=Dont+必定祈使句（必定祈使句（Dont+V原）原）Dont talk in class.Dont eat in class.Dont run in the hallway.Dont draw on the wall.Dont throw everywhere.二、否定祈使句回答：二、否定祈使句回答：Of course,I wont.Sorry,I wont do that next time.第5页以以letlet开头祈使句开头祈使句一、Let sb do sth Let sb not do sthLet us make fruit salad.Let your father call me back.Let him not play basketball here.Let them not play the drums now.二、二、以以letlet开头祈使句回答：开头祈使句回答：Thats a good idea./That sounds good.Oh,No.Its too hot.Oh,No.Lets watch TV at home.第6页No+动名词/名词No smoking!No smoking in the meeting room!No parking!No photos!第7页其它类型祈使句 Why dont you do sth?=Why not do sth?相当于相当于Please do sth.Why dont you stand up?=Why not stand up?Why dont you go out to play?=Why not go out to play?第8页1.the popcorn machine.A.Turn on B.Turning on C.To turn on D.Turns on2.the sandwich before you wash your hands.A.Eating B.Not eating C.Dont eat D.Not eat3.-late for the meeting next time.-Sorry,I wont.A.Dont B.Dont be C.wont be D.Be not4.Lets to school by bike.A.not go B.not to go C.dont go D.not go5.a banana milk shake is easy.A.Make B.Makes C.Making D.Made6.-Dont boil the vegetable too long.-.A.Yes,I wont B.Yes,I will C.No,I will D.No,I wont第9页7.adding some relish to the soup?A.Why not B.Why dont C.What about D.What for8.-Dont drive too fast!Its dangerous.-.I will slow down减速.A.Great B.Certainly C.Cool D.Sorry9.-Jace,lets play tennis.-.A.That sounds good B.Yes,I do C.Dont worry D.Youre welcome10.-Please cut up the two bananas.-.A.Yes,I can B.Yes,I will C.No,I dont D.Sorry,I cant第10页