情态动词musthaveto市公开课一等奖省赛课微课金奖课件.pptx

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,*,基本,形式,Must,Have to,基本,意义,特殊,使用方法,表示,推测,巩固,练习,第1页,Must have to,必定式 must do have/has/had to do,否定式 must,not,do,dont/doesnt/didnt,have to do,neednt/dont have to,疑问式 Must+sb.+,do?,Do/does/did,+sb.+have to?,由,must,引发疑问句，,必定回答,要用,must,或,have to,否定回答,要用,neednt,或,dont have to,意思是“无须”.,Must I finish the task right now?,Yes,you must./Yes,you have to.,No,you neednt./No,you dont have to.,Mustnt 表示禁止，意思是“不准”,第2页,Must 和have to 区分：,I must learn another language.,I have to learn another language.,Tom must shave every morning.,Tom has to shave every morning.,妈妈不在家，所以我不得不照看商店。,Mother is out,so I have to look after the shop.,我要留下来照看店。,I must look after the shop.,你留下看店。,You must look after the shop.,(主观愿望：I want to),(客观需要：我跳槽去了,法资企业。),(军人服从命令),(他长着一脸大黑胡子),必须,不得不,第3页,Must,表示猜测，,惯用于必定句中,，意思为“一定是,必定”。,注意,must表示推断或猜测几个情况:,你姐姐一定是这家医院医生。（,表现在,猜测）,Your sister must,be,a doctor in this hospital.,他此刻一定正在阅览室读报。（,表正在进行,猜测）,He must,be reading,newspapers in the reading room now.,昨晚一定下雨了，因为地面上是湿。（,表过去,猜测）,It must,have rained,last night,for the ground is wet.,Have to 不能表推测,must+be doing,must+do,must+have done,第4页,Mike,you _ play with fire.You_ burn,yourself.,A.wont;cant B.mustnt;may,C.dont have to;must D.have got to;shouldnt,2.You _ see the doctor,Joe.You dont look,very well.,A.must B.shall C.may D.can,3.Must I clean the window now?,No,you _.,A.mustnt B.neednt C.cant D.may not,Consolidation,A,B,B,4.Jacks ill,so they _ change their plans.,A.must B.need C.have got to D.might,5.-Harry has been reading all day.,He _ be tired.,A.should B.has got to C.has to D.must,C,D,第5页,广东,2.Ive taken someone elses green sweater by mistake.,-It _ Harrys.He always wears green.,A.might be B.will be C.must be D.has to be,天津,1.Who is the girl standing over there?,-Well,if you _ know,her name is Mabel.,A.may B.can C.must D.shall,A,C,第6页,Must 表“偏要，偏偏”：,After I gave him advice,he,must,do the opposite.,If you,must,leave,tell me and I will let you go.,Must,you trouble me now?,第7页,Policeman:_.,The man:_.,You must hand in,your homework on,time.,Im sorry.,My mother was ill yesterday,so I had to send her to hospital,He must have,done something,wrong.,第8页,反意疑问形式,当陈说部分含有情态动词must时，我们便要分析一下,must含义。,1.假如must 作“一定；要；必须”讲，反意疑问句须用neednt：,He must work hard at physics,neednt,he?,2.而当must作推测意义“一定是；必定”讲时，反意疑问,句则需依据must后动词原形，选取对应形式。,Tom must be at home，,isnt,he?,Tom must have finished his homework,hasnt,he?,第9页,Notes：must 用作名词,必须有/做东西,Warm clothes are,a,must,in the mountains.,Must I listen to the teacher in class?,Yup,you must.Thats,a,must,.,第10页,