unit2-healthy-eating--grammar情态动词

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,情态动词,情态动词,表示推想,不表示推想,can could,may might,shall should,must,will would,ought to,have to,need (neednt),dare (darent),used to,表示推想情态动词的重要用法,确定的推想,可能的推想,否认的推想,疑问的推想,must,对将来,对现在,对过去,情态动词,may,might,cant,couldnt,can,could,+V.,+V,.,+have done,常见must be +be doing,+V.+V.+have done,+be doing,可以用not表示“可能不”,+V.+V.+have done,+be doing,+V.+V.+have done,+be doing,e.g.Young people,should,learn how to use,computers.,Every citizen,ought to,obey law.,You,ought not to,go.,should常表示劝告、建议、命令，与ought to意义相近，但ought to多表示责任、义务，语气猛烈。在疑问句中通常用should代替ought to。,must&have to,must,&,haveto,must用于一般问句中,确定答复用must否认式用neednt或dont have to，做“不必”,mustnt表示“制止，不允许”,e.g.,Must,Ifinishallassignmentsatatime?,Yes,you must.,No,youneedn”t.,You,mustnt,getoffwhilethecarisstill moving.,must+have done 表示对过去已经发生的行为进展推想，意为“想必/准是/确定作了某事”。,1.It must have rained last night,for the road was very muddy.,昨晚 确定是下雨了，由于地上很泥泞。,2.We must have learned 2,000 words by the end of last term.,到上学期为止我们确定学了有两千个单词 。,3.He must have gone to Beijing.,他确定已经去北京了。,can/could+have done表示对过去的行为的疑心和不愿定，通常用在否认句和疑问句中。,1.Can they have won the basketball match?,他们可能赢了篮球赛吗？,2.It couldnt have been Mr.Green.He has gone to New York.,那不行能是格林先生的，他已经去北京了。,could(不用can)+have done,在确定句中表示“原来能够而没能”，具有动听的批判和责怪之意。,1.I could have passed my exam easily,but I made too many stupid mistakes.,我原来能够轻易通过考试，但我犯了太多不该 犯的错误。,2.You could have reported to me earlier.,你本该早点告知我的。,may/might+have done表示对过去已发生行为的推想，意为“或许/或许已经”。一般只用于确定句和否认句中，不用于疑问句。might比may更委婉、含蓄和不愿定。,1.Its too late.I think he may have gone to bed.,太晚了，我想他可能已经睡觉了。,2.He may/might not have finished the work.,他可能没有完成工作,。,might不用may+have done表示“原来可能”，但实际上没有发生的事。另外，还可表示“原来应当或可以做某事”之意，含有略微的责怪语气。,1.You might not have told her.,你本可以不告知他的。事实上你告知他了,2.You might have come earlier.,你本可以早点来的。但没有这样,neednt+have done表示做了原来不必去做的事。,1.She neednt have gone to the station yesterday.,昨天她本不必到火车站去的.昨天她去了,2.You neednt have bought it.,你本可不必买它的。你买了,1,.,-I wonder why they are late?,-They _ the train.,cant have missed B.could miss,C.must have missed D.might miss,C,2,.,Oh,Im not feeling well in the stomach.I _ so much fried chicken just now.,A.shouldnt eat B.shouldnt have eaten,C.mustnt eat D.mustnt have eaten,B,5,.-Has Mike started?He said he would join in the party.,-He _.He is a man of keeping his word.,A.could have left B.must have left,C.cant come D.wont be coming,6,.-There were already five people in the car,but they managed to take me as well.,-It _ a comfortable journey.,A.cant be B.mustnt have been,C.should be D.couldnt have been,B,D,7,.-Why hasnt Jane arrived yet?,-She _ again in the morning?,A.shouldnt have overslept,B.may have turned off the alarm clock,C.must have no one t o call her,D.should have someone to wake her up,8,.-Did you go to the movie the day before yesterday?,-No.We _,but we decided not to.,A.should have gone B.could go,C.should go D.could have gon,e,B,A,情态动词考题:,1.-Did the train arrive in time?,-No.It _ two hours ago.,A.must have arrived B.ought to have arrived,C.must arrive D.ought to arrive,2.“Must I drive to his house and pick up the,children?“,“No,.“A.you shouldn”tB.you might not,C.you needn”t D.you mustn”t,B,C,3.We didn”t see Tom at the meeting yesterday.,He it.A.mustn”t have attended,B.cannot have attended C.needn”t have attended,D.would have not attended,B,4.You _ such a long composition.The teacher only asked for 300 words.You have written 600.,A.mustnt have written B.couldnt have,written,C.neednt have written D.do not have to write,C,5.There is someone knocking at the door.,it be Tom?A.can B.must C.should D.ought to,6.Two years ago,my husband bought me a bicycle.,If you live in town,it is often faster than a car,and you worry about parking.,A.must notB.may not,C.should notD.don”t have to,A,D,