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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,*,*,*,Unit 2,1,Unit 2,2,Grammar and usage,Modal verbs:general introduction&comparisons,3,Now,many of us,can,speak English quite well,but a few years ago,we,could,nt.Yes or no?,If we talk about the ability someone has,we use the modal verb,can,.,4,If we want to express that it is necessary for us to do something,what modal verb do we use?,must,What other modal verbs can you think of?,5,Modal verbs 情态动词,can/could表能力,(1)I dont think he,can,solve the problem without any help.,(2),Can,you help me to work out this maths problem?,6,ought,to/should,1.表示义务，“应该”，用于各种人称。,You,should,respect your parents.,You,shouldnt,spend,much,time,surfing,the,Internet.,2.表示推测，“想必，估计”的意思。,If Tom starts today,he,should,complete the project in time.,7,3.表示与想象的不一样“照说应该”。,I wonder where Mike is.He,should,be here now.,You,shouldnt have told,David what Mike told you.,4.在表示建议、命令、要求动词后用虚拟语气。,My friends suggested,that I,(should),pay,visit to shanghai next month.,8,The chairman demanded that we,(should),solve the problem at once.,5.表示惊讶、忧虑、惋惜等感情色彩。,I am really surprised that he,should,talk to his parents that way.,Rose,should,turn him down.,Rose,ought,to/will/must,give me a hand whenever I am in trouble.,9,have to/must,have,to 表客观需求,must 表主观愿望,I,have,to,finish the work before 7,oclock.,We,must,make every effort to protect the,Earth.,You,must,work hard to achieve your life goal.,10,Rose,might,become upset at the news.,Rose,may,be pretty busy now.,Rose,could,cook meals for herself 2 years ago.,John isnt here to attend the party.He,must be reviewing,his notes for the big exam tomorrow.,certainty 表示可能性,might/may/could/should/ought to/will/must,11,Make,requests,提出要求,will;can;could;would,A:,Can/Will/Could/Would,you lend me some money?It happens that I dont have any with me.,B:Yes,I can/will/can/will,.,12,Make,suggestions,提出建议,Shall,we/I/he/she/they turn in the project today?,shall常用于第一、三人称，表示征求对方意见。,A:,Shall,he come in?,B:OK.,13,Make offers 提出请求,I,ll,wash your sports jacket.,Shall,I get a ticket for you?,Shall,we carry the books for you?,Shall,I clean the blackboard for you?,14,Give advice 给出忠告,You,should not/ought not to,speak to him like that.,We,should,focus on our work.,We,should not,laugh at those who are disabled.,15,can/be able to,can的形式只有can，could两种;,be able to的形式有am/is/are able to，was/were able to，have/has been able to等多种。,Comparisons,16,can 一般指一个人的能力；,be able to经过努力后而达到的一定程度。,My brother,can,play table tennis.,My brother,is able to,dive under,water for 10 minutes.,17,shall/will,shall表达诺言；will表示决心或决定,Take it easy.You,shall,be offered a,job in this company.,(2)Mike,will,spare no effort to study.,18,mustnt/neednt,mustnt 表示“禁止，不许”语气强,烈；,neednt表示“不需要，没有必要”语,气较为缓和。,(1)You,mustnt,miss the speech to be delivered tomorrow.Its of great importance.,19,(2)You,neednt,do that if you dont want to.,(3),Must,we clean the classroom?Yes,you,must,./No,you,neednt.,(4)It is a five-minute walk from the station to my house.You,neednt have taken,a taxi.,(,However,you did take a taxi.),20,Have a try!,You are writing an article for the school magazine about how cities are chosen to host the Olympic Games.Go through the list showing what is important for a candidate city.Then use the information to complete the article.,21,convenient transport:,recommended,English-speaking citizens:,recommended,international airport:,necessary,sports stadium:,necessary,training grounds:,necessary,hotels:,recommended,22,When choosing a city to host the Olympics,there are certain things we need to consider.First,the city(1)_(must,should)have an Olympic stadium and also(2)_(has to,ought to)provide first-class training grounds.The chosen city(3)_(must,should)also have plenty of good hotels and(4)_(could,must)have an international airport nearby.,must,has to,should,must,23,Public transport(5)_(has to,ought to)be convenient.Finally,we should think about the people who live in the city.Many of the people(6)_(should,might)speak at least a little English,which would be very helpful for tourists.,ought to,should,24,Zhou Jianping is interested in winter swimming and wants to practise it.He wrote a letter to his friend Li Ming,a winter swimmer,for advice.Help Li Ming complete his reply using modal verbs.,Hi Jianping,I was glad to receive your letter and am happy to tell what I think about winter swimming.,25,I know that you are a sports fan and like swimming very much.Im pretty sure you(1)_ swim very well.However,winter swimming(2)_ be dangerous.I suggest you join a swimming club and learn from a coach.Reading a book on winter swimming will also be helpful.,Go swimming every day through summer and autumn.When winter comes,swim for just a few minutes at noon every day.,can,can/could,26,Do some exercises as a preparation before you swim.Otherwise,you(3)_ hurt yourself.,To protect yourself from possible dangers,you(4)_(not)drink before swimming.If the water is very cold,you(5)_(not)swim for too long.,When you go winter swimming,find a good place.,may/might/co
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