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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 4 Amazing Science,Section B,Topic 3,What do you know about Mars?,3,Work alone,Match the two columns to make sentences.,()1.,Life,may be,()2.More satellites,must be,()3.,Scientific research,should be,()4.Other planets,may be,()5.Aliens,have not been,d,c,a,e,b,a.,done,carefully.,b.,seen,by people.,c.,sent,into space.,d.,found,on other planets some day.,e.,visited,in the future.,情态动词,+be+done,have/has+been done,aliens/may/find,Aliens,may be found,in space.,clothes/can/see,Many beautiful clothes,can be seen,in the shop.,litter/mustnt/throw,Litter,mustnt be thrown,everywhere.,bike/should/repair,The bike,should be repaired,at once.,含有情态动词的被动语态的结构,：,情态动词,+,be+V,.,的过去分词,1.Aliens,may be found,in space.,2.Many beautiful clothes,can be seen,in the shop.,3.Litter,mustnt be thrown,everywhere.,4.The bike,should be repaired,at once.,Whats the problem?,Sams watch doesnt work.,Johns pet pig is ill.,The trees are dying.,Nobody looks after Sandys daughter.,It should _ _ first.,It should _ _ to the _ _.,They should _ _ at once.,She can be sent to _ _.,2,1,4,3,be repaired,be taken pet hospital,be watered,her grandmother,What should be done?,Listen to 1a,try to answer the following questions.,1.Who will take part in the space flight to Mars?,2.What would Kangkang like to be when he grows up?,Astronauts from,China,the United States,and Russia.,He,d,like,to be an astronaut,when,he,grow,s,up.,Read 1a and practice in pairs.,I,prefer,science,to,dance.,prefer A to B,喜欢,A,胜过,B,eg,:,比起苹果来我更喜欢香蕉。,2.prefer doing A to doing B,eg,:,汤姆比起跳舞来更喜欢看电视。,3.prefer to do.rather than do,宁愿做,而不做,eg,:,我宁愿看电视也不愿出去。,I prefer bananas to apples.,Tom prefers watching TV to dancing.,I prefer to watch TV rather than go out.,1.The astronauts can discover something,about Mars.,2.,Kangkang,should first master some basic computer skills.,3.More and more things will be discovered in the future.,4.Maria can perform ballet on the stage in the future.,1.Something new about Mars_,_ by the astronauts.,2.Some basic computer skills_,_ by Kangkang.,3.People will _,things in the future.,4.Ballet _ on the stage by Maria in the future.,can,be,can be performed,Read 1a again.Discuss and complete the sentences.,discovered,should,be,mastered,discover,more and more,Sum up the structure and usage of the passive voice with modal verb.,can,could,may,might,must,should,would,be,及物动词的过去分词,teacher,doctor,scientist,actor,magician,astronaut,Have a discussion about the dreams or plans in the future together.,Why,do you want,to be,a/an.,Careers,（职业）,reason how,What,are you going to be when you,grow up,?,How,to,make,it,come true,?,Talk about your dreams in groups.Give your reasons and tell how youll,realize,your dreams,want to be,would like to be,be going to be,feel like being,be interested in,have fun being,careers,achieve,realize,make come true,grow up,My dream,I am going to be a/an _ when I grow up.,Because I am interested in _.In order to,make my dream _ _,I must _,_.I hope I can _ my dream in the,future.,Homework,Write a passage about Mars.,
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