2017语法专题课件-情态动词（共36张PPT）.ppt

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,*,情态动词,情态动词不能单独作谓语，它必须和动词,原形连用一起构成谓语。,一、情态动词的情态意义表示法,考点一：,can,可表示现在或将来的能力，,意为“能；会”。,can,还可表示请求、允,许，意为“可以”。,如：,Gabriella can speak French fluently.,Can you help me lift this box?,考点二：,could,可表示过去的能力；当,could,表示允许时，语气比,can,更加委婉,和客气。,如：,Could I have a drink of water,please?,考点三：,may,表示请求、允许，意为“可,以”。,如：,May I come in and wait?,Thank you.You may go now.,考点四：,might,表示允许时，语气比,may,更,加委婉和客气。,如：,Might I borrow your pen?,考点五：,must,表示义务、命令或必要，意,为“必须”，强调主观看法。,mustnt,表示“不,允许；禁止”之意。,如：,All passengers must wear seat belts.,You mustnt talk to your mother like that.,考点六：have to,意为“不得不”，强调客观,需要。,如：,It is getting late.I have to go.,考点七：,should,意为“应该”，既可以表示义,务或责任，还可以表示劝告或建议。其否定,式为,shouldnt,，意为“不应该”。,如：,You should read his new book.Its really,interesting.,Children shouldnt be allowed to play in the,street.,考点八：,had better do,sth,.,意为“最好做某,事”，其否定式在,better,后加,not,。,如：,Youd better(not)see the film yourself.,考点九：,need,表示“需要”，作情态动词时，,通常用于否定句或疑问句中。,【,中考链接,】,1.Jenny finally got the job because she,_ speak English well.,A.might,B.must,C.could,(2015,广东佛山,),2.How do you usually go to school?,My school is far away.I _,take the bus to school.,A.must,B.might,C.have to,(2015,山东菏泽,),3.Its surprising that Mr.Mas little,daughter _ speak English so,well.,A.must,B.can,C.mustnt,D.cant,(2015,重庆,A,卷,),4.As middle school students,we _,be afraid of difficulties if we want to,make our dreams come true.,A.must,B.shouldnt,C.need,(2015,黑龙江哈尔滨,),5.Cars,buses,bikes and people _,stop when the traffic lights are red.,A.can,B.may,C.must,(2015,四川成都,),6._ I use your dictionary?,Of course.But please return it to,me before you leave.,A.Must,B.Need,C.May,(2015,湖南长沙,),7.Mum,the train is leaving in eight,minutes.I _ go now.,Okay,Jim,call me when you get,there.,A.may,B.must,C.can,(2015,四川乐山),8.You _ return the book now.,You can keep it until next week if,you like.,A.have to,B.cant,C.mustnt,D.neednt,(2015,山东青岛,),9.You _ park here!Look at the,sign,it says“No parking”.,Sorry,I didnt notice that sign just,now.,A.wont B.neednt,C.mustnt D.couldnt,(2015,江苏苏州,),二、情态动词表示推测,考点一：,can,表示推测时常用于否定句,中，此时,cant,意为“不可能”。,如：,That cant be his mother.Shes not that,old.,考点二：,could,常用于肯定句中，表示不,确定的推测，意为“可能”。,如：,You could be right,but I dont think you,are.,考点三：,may,表示推测，意为“可能；也许”。,如：,I may be late,so dont wait for me.,考点四：,might,表示推测时，比,may,的可能性,更小。,如：,She might not want to come with us,I guess.,考点五：,must,表示推测时常用于肯定句中，,表示很有把握的推测，意为“一定”。,如：,The machine doesnt work.There must be,something wrong with it.,1.Look!It _ be David in the classroom.,It _ be him.Because I saw him in the library a moment ago.,A.may;mustnt B.must;cant,C.can;cant D.mustnt;can,(2015,四川广安,),【,中考链接,】,2.Harrys been driving all day he _ be tired.,A.need,B.can,C.shall,D.must,(2015,浙江杭州,),3.Look!The man at the gate _ be our headmaster.He is always standing there every morning.,No,it _ be him.He is holding a meeting in the office now.,A.must;cant B.must;mustnt,C.cant;cant D.cant;mustnt,(2015,山东滨州,),4.I have been to the moon twice.,You _ be joking!Its impossible!,A.can,B.may,C.must,D.need,(2015,山东潍坊,),5.Do you have any plans for this Sunday?,Im not sure.I _ go to the countryside to see my grandmother.,A.can,B.must,C.may,D.need,(2015,安徽,),6.Will Karen come to our party?,She hasnt decided yet.She _ come.,A.need,B.must,C.may,Dhas to,(2015,山东聊城,),7.The green dictionary _ belong to _.Her name is on it.,A.may,Carlas,B.must,Carla,C.cant,Carla,D.must,Carlas,(2015,四川南充,),8.Do you have any plans for this summer vacation?,Im not sure.I _ take a trip to Taiwan.,A.must B.need,C.may D.should,(2015,江苏盐城,),9.Life is changeable.No one knows what _ happen in the future.,A.should,B.need,C.have to,D.might,(2015,山东莱芜,),三、情态动词一般疑问句的回答,考点一：,may,表示请求时，用于主语为,第一人称的一般疑问句中，其否定回答,不用,may not,，而用,mustnt,或,cant,。,如：,May I use your glasses for a few,minutes?,No,you mustnt/cant.,考点二：,在回答由,must,引起的一般疑问句时,肯,定回答常用,must,否定回答常用,neednt,或,dont have to表示“不必”。,如：,Must we finish this project today?,Yes,you must./No,you neednt/dont have to.,考点三：在回答由,need,引起的一般疑问句时，肯定回答用,must,，否定回答用,neednt,。,如：,Need I bring you a coat?,Yes,you must./No,you neednt.,考点四：在回答由,could(,表示委婉语气,),引起的一般疑问句时，常用,can/cant,回答。,1.Must I finish all the homework this evening?,No,you _.Tomorrow is Saturday,and you have enough time for it.,A.mustnt B.neednt,C.wont D.cant,(2015,江苏连云港,),【,中考链接,】,2.A:Mum,may I go out to play football for an hour?,B:No,you _.The air outside is not very clean.,A.cant,B.neednt,C.couldnt,(2015,贵州遵义,),3.Must I hand in the exercise book today,Miss Green,？,No,you _.Take your time.Just tomorrow.,A.shouldnt B.neednt,C.mustnt D.cant,(2015,四川内江,),4.Must I sing the song in Russian?,No,you _.Its up to you.,A.mustnt,B.cant,C.dont,D.neednt,(2015,四川资阳,),5.Can you come to my party on Wednesday?,Sorry,I _.I have a piano lesson.,A.cant,B.couldnt,C.mustnt,(2015,黑龙江绥化,),6._ I complete the composition today,sir?,No,you neednt.You may _ tomorrow morning.,A.Can,hand it in,B.May,hand in it,C.Must,hand it in,D.Need,hand in it,(2015,山东烟台,),7.Could you please sweep the floor,Tom?,Sorry,mum,I _.Im doing my homework.,A.cant B.mustnt,C.neednt D.may not,(2015,湖北荆门,),