情态动词公开课课件

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,*,Unit2 Grammar and Usage,Modal verbs,Jack,I have good news for you!,Rose,What?,Jack,The educational department has carried out rules to reduce students too much study load.,Rose,Really?If so,I dont,have to,stay up late to do so much homework and my mom,may,allow me to play computer games.,Jack,The best thing I think is that,I,can,have more spare time to take exercise after class.,Rose,Sure.By the way,who is your favorite sports star?,Jack,Liu,Xiang,I,should,say.,Rose,Tell me something about him.,Jack,Well,maybe I,can,show you some photos.,一,.We use modal verbs to talk about:,1.Ability,（能力）,2.Obligation,（义务）,3.Certainty,（可能性）,4.Permission,（允许）,二,.We also use modal verbs to:,5.Make requests,（提出请求）,6.Make suggestions,（提出建议）,7.Make offers,（提供帮助）,8.Give advice,（提出意见）,1.Ability(,能力,),:,Liu Xiang,can,run the 110m hurdle race within 13 seconds.,can/could,:,1.,can,一般表示与生俱来的能力或者一种客观可能性,还可以表示请求和允许。,Learning English _ be difficult,.,can,Man,can,not live without air,.,_ I use your bike?,Can,can/could,:,2.,在疑问句中，用,could,可表示请求，语气较委婉。,_I have the television on?,Yes,you _.,/No,you _,Could,He asks if he _ smoke here.,could,can/may,cant/Im afraid not,can/could,:,3.,表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中）,Hes such a nice person that he _ commit the crime,.,cant,你怎么会如此地粗心！,How,can,you be so careless!,Can,this be true?,can/could,:,4.can never/canttoo,表示,“,无论怎样,也不过分,”,，“越,越好”,。,你过马路的时候再小心也不为过。,You,cant,be too careful while crossing the road.,Attention:,can/be able to,区别,:,Edison always wondered why hens,could,hatch(,孵,)chickens while he,was not able to,.,Question:Are the two modal verbs interchangeable(,互换,)?If not,why?,can,表示,与生俱来的能力,或,一种客观可能,，而,be able to,更加强调,通过后天的学习和努力获得的能力，,或者,在某个客观的场合和背景下,，能做到的事情。,Attention:,can/be able to,区别,:,A big fire broke out in ABC hotel yesterday.Luckily,everyone _ run out of the building,.,was able to,2.She _ speak both English and French.,can,Im so tired!I have to do the training for at least 10 hours a day!,2.Obligation(,义务,):,yet he,must,work hard to win the gold medal.,Although Liu Xiang is so gifted in hurdle race,Attention:,advisability,necessity,ought to/should,have to,must,Your mother brings you up and takes good care of you,so when she is old,you _ look after her in return.,A.can,B.may,C.have,to,D.must,Shi,Dongpeng,might,win a medal at the Olympic Games.,Although the chance of winning a medal is small,Ill try my best!,3.Certainty(,可能性,),:,Attention:,very uncertain,almost certain,might,should,must,may,could,ought to,will,1.He _ be at home,.,2.He _ be at home,for he just called me from his home 15 seconds ago.,A.may,B.might,C.must,A.may,B.might,C.must,(can),must,表示肯定的猜测，译为“一定”，不能用于否定句或疑问句。,This,must be,your pen.,He,must be doing,his homework now.,He,must have arrived,already.,must,must,2.,表示“坚持”（常用于固定句型：,if you must do,sth,.,如果你非得要做某事）,如果你真的要走，那就悄悄离开。,If you must leave,do it quietly.,Attention:,They_ be doing the experiment in the lab.,Why,？,Because the lights are still burning,.,A.could,B.can,C.must,D.would,4.Permission(,允许,),:,May,I eat KFC if I win the gold medal?,may/might:,1.,表示许可。表示请求、允许时，,might,比,may,的语气更委婉一些。,Might/May,I use your computer?,Yes,you can.,/No,you cant/mustnt.,may/might:,2.,用于祈使句中表示祝愿。,3.,表示推测、可能（只用于肯定句，疑问句则要用,can,或,could,）。,祝你成功！,May,you succeed.,He,may,be very busy now.,May,you be happy all your life.,5.Making requests(,提出要求,):,Can,you help me with my training?,I dont know how to use this equipment!,will can could would,informal,formal,6.Making suggestions(,提出建议,),:,Shall,we do the training in the morning?,Its too hot to take exercise in the afternoon.,shall,:,1.,Shall,用于第一、第三人称疑问句中，表示说话人征求对方的意见、向对方请示或提供帮助,。,1.,Shall,we begin our lesson?,2.When,shall,he be allowed to leave hospital?,3.,Shall,I carry this bag for you?,shall:,2.,Shall,用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。,You,shall,fail if you dont work harder.,He,shall,be punished according to the rule.,等我读完这本书，就会给他的。,He,shall,have the book when I finish it,.,警告,威胁,允诺,7.Making offers(,提供帮助,):,Dont worry,dear,I,will,wash them right away.,Mom,my dirty clothes have been piled up!I dont have time,will/would:,1.,表示请求、建议等，,would,比,will,委婉客气。,sentence,pattern,Would you please,Would you mind,Would rather,Would you like,will/would:,2.,表示意志、愿望和决心。,I,will,never do that again.,will/would:,3.,可表示经常性、习惯性、倾向性。翻译为“经常、惯于、总是,”,。,1).The old man,_have,a smoke under a big tree every afternoon after he finished his farm work.,would,2).,门就是打不开,!,The door,wont,open.,will/would:,Attention:,I,will,go to the park with you tomorrow if you,will,offer me lunch.,Question:Is this sentence correct?Why?,情态动词,表示,“,意愿,”,8.Giving advice(,提出意见,):,You,should not/ought not to,eat so much before running.,How delicious!,should:,1.,Should,表示劝告、建议、命令，其同义词是,ought to,；在疑问句中，通常用,should,代替,oughtto,。,Should,I open the window?,我们应当要相互学习。,We should learn from each other.,should:,2.,情态动词,should,用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。,Rose,Sure.By the way,who is your idol?,Jack,Liu Xiang,I,should,say.,I,should,advise you not to do that again,.,3.should