高中英语语法祈使句课件

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,Imperatives,(,祈使句,),Grammar,No smoking!,Dont drink!,Attention,！,Parking!,What do they mean?,No smoking!Dont drink!Attenti,Grammar-1.,Look&Say,Look at the signs and say what they do.,Dont go faster than 90 kph.,Turn right.,Dont walk./No pedestrians.,Dont turn left./No left turn.,Dont stop./No parking,They give instructions,Grammar-1.Look&Say Look a,一,.,祈使句的定义,一.祈使句的定义,用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。,Look at the following sentences:,Go and wash your hands.,（去洗手。,命令）,Be quiet,please.,（请安静。,请求）,Be kind to our sister.,（对姊妹要和善。,劝告）,Look out,！,Danger,！（小心！危险！,警告）,Keep off the grass.,（勿践草坪。,禁止）,Can you tell me what are imperatives?,定义,:,用于表达命令、请求、劝告、警告、禁止等,祈使句无,_,，主语,you,常,_,；,动词,_,谓语当，句首加,_,变否定；,主语,省去,原形,Dont,祈使句无_，主语you常_；主语省去原形D,Are the following sentences imperative?(discuss in pairs),He is always sleeping in the class.,Its a beautiful day,isnt it?,Tell me your name,please?,Will he come tonight?,Mary,come here!,(),(,),(,),(,),(),Are the following sentences im,二,.,祈使句的结构,二.祈使句的结构,1.,Observation,What,re the features of imperative?,Listen to me carefully.,Come in and sit down,please.,Dont close the window its hot.,Be quiet!Be a good boy!,Lets try our best to improve our environment.,Listen,Come,sit,Dont,Be,Lets,Be,1.Observation Whatre the,2.Conclusion,Do,型（以行为动词开头）,Stand up!,Dont stand up!/Never stand up!,Be,型（以,be,动词开头）,Be careful.,Dont be late./Never be late.,Let,型（以,let,开头）,Let him in.,Let me help you.,肯定结构,:,2.Conclusion Do 型（以行为动词开头）,否定结构,:,Do,型和,Be,型的否定式都是在句首加,dont,构成。如,:,不要忘记我,!,Don,t forget me!/Dont be late!,Let,型的否定式有两种,:“,Dont,+let+,宾语,+,动词原形,+,其它成分”和“,Let+,宾语,+,not,+,动词原形,+,其它成分”。如,:,别让他走。,Don,t let him go./Let him not go.,有些可用,no,开头,用来表示禁止性的祈使句。如,:,禁止吸烟！禁止钓鱼！,No smoking!,No fishing!,否定结构:,用祈使句完成下列句子。,1._ on the pavement,（,人行道,）,.,2._ in the bicycle lanes.,3._ at red traffic lights.,4._ the rules of the road.,Go,Ride,Stop,Keep,go,keep,look,ride,stop,stay,watch out,用祈使句完成下列句子。1._ on the p,5._ for pedestrians,（行人,）,.,6._ behind you before you turn right or left.,7._ in the middle of the road.,Look,Watch out,Dont stay,go,keep,look,ride,stop,stay,watch out,5._ for pedestrians,三,.,祈使句中应注意的几个问题,三.祈使句中应注意的几个问题,Do,be patient!,Do,sit down.,Do,write back when you receive his letter.,Tom,you,clean the room.,Dont,you,be late again next time!,What is different now?,Do be patient!What is differe,1,.,加强,祈使句语气的方式,:,Do/you+,动词原形,1.加强祈使句语气的方式:,此句型为“条件与结果”并存的句式，其中的祈使句可转化为,if,条件句,。,e.g.,Work hard,and,you will succeed.,=,If you,work hard,you will succeed.,Hurry up,or,you will miss the last bus.,=,If you dont,hurry up,you will miss,the last bus.,2,.,祈使句,(,),+and/or+,简单句,是一种固定句式。,此句型为“条件与结果”并存的句式，其中的祈使句可转化为if,这一句式也可以演变为,“,名词性短语,+and+,简单句,”,的形式。,More time,and I could have done it better.,如果多给我一些时间，我可以做得更好。,这一句式也可以演变为“名词性短语+and+简单句”的形式。M,3,.,祈使句的,附加疑问句,Open the door,_?,Dont forget,_?,Let us go there,_?,Lets go there at once,_?,will you?/,（,wont you,）,will you,shall we,will you,Open,Don,t,Let,s,Let us,3.祈使句的附加疑问句Open the door,_,e.g.Put on your coat,pleaseits very cold outside.,Turn down the TV setthe baby is asleep in the room.,4,.,祈使句,+,波折号,+,附加信息,；,附加信息常表示发出祈使动作的原因。,e.g.Put on your coat,please,2._ remember to turn off,the lights before you leave the lab.,A.Be sure B.Do,C.Make sure D.Does,1.,Stand over there _ youll be able to see it better.,A.or B.while C.but D.and,走近高考：,2._ remember to turn o,3.,Let us pass,_?,A.shant we B.shall we,C.wont we D.will you,4.,Wait a minute,_?,A.shall you B.will you,C.do you D.dont you,3.Let us pass,_?,5.,_ down the radiothe babys asleep,in the next room.,A.Turning B.Turned,C.Turn D.To turn,祈使句以,动词原形,开头。,5._ down the radiothe bab,6,Youd better not smoke here,_?,A.will you B.shall you,C.have you D.had you,有,had better,的句子构成反意疑问句,用,had,构成。,6 Youd better not smoke here,7.,Dont forget to phone me,_?,A.do you B.neednt you,C.wont you D.will you,否定祈使句的反意疑问句用,will,构成。,7.Dont forget to phone me,_,8.Lets have a cup of tea,_?,A.shall you B.will you,C.shall we D.wont you,以,lets,开头的祈使句用,shall we,以,let us,开头的祈使句用,will you,构成反意疑问句。,8.Lets have a cup of tea,_,9._,I think,and the problem,could be settled.,A.If you dont doubt your efforts,B.As you keep up your spirits,C.Making great efforts,D.A bit more efforts,9._,I think,and the,10.Its really very dangerous.One,more step,_the baby will,fall into the well.,A.or B.so that,C.and D.if,10.Its really very dangerous,Grammar-6.Practice(3ms),-English has a large vocabulary,hasnt it?,-Yes._ more words and expressions and you will find it easier to read and communicate.,A.KnowB.KnowingC.To knowD.Known,2,Stand over there _ youll be able to see it better.,A.or B.while C.but D.and,-Ive never seen anyone run so fast.-_ David go.,A.just watch B.just to watch C.just watching D.just having watched,A,D,A,Grammar-6.Practice(3ms)-,Grammar-6.Practice(3ms),4.-Dont forget to my birthday party tomorrow.-_.,A.Yes,I wont B.No,I wont C.No,I will D.Yes,，,I will 5.Be sure to write to us,_?A.will you