九年级下册课件M4-U3.ppt

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,*,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 3,Language in use,Module 4 Rules and suggestions,1.To summarise and consolidate the use of,modal verbs,2.To know more rules of eco-tourism,Objectives,情态动词,Are you familiar with these sentences?They are all from this module.,Observe,1.You,must,be careful of falling stones.,2.You,mustnt,walk too close to the edge of the hill path because you,might,fall and hurt yourselves.,3.You,should,always wear proper clothes.,4.Bears,might,think our rubbish is food.,5.,Can,we go rock climbing?,No,you,cant,.,6.You,mustnt,go off on your own.,7.You,may,need some water.,8.We,should,hang the food in a tree tonight.,9.They,can,smell food from a long way away.,10.Bears,might,think our rubbish is food.,11.No one,can,run faster in the forest than a bear.,12.You,mustnt,make any sudden moves or make a sound.And above all,you,mustnt,run.,1.You _ be careful of falling stones.,2.You _(not)walk too close to the edge of the hill path because you _ fall and hurt yourselves.,3.You _ always wear proper clothes.,4.Bears _ think our rubbish is food.,5._ we go rock climbing?,No,you _(not).,6.You _(not)go off on your own.,must,mustnt,might,should,might,Can,cant,mustnt,go,Ready?,7.You _ need some water.,8.We _ hang the food in a tree tonight.,9.They _ smell food from a long way away.,10.Bears _ think our rubbish is food.,11.No one _ run faster in the forest than a bear.,12.You _(not),make any sudden moves or make a sound.And above all,you _(not)run.,may,should,can,might,can,mustnt,mustnt,以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解,下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点。,语法讲解,情态动词本身有一定的意义，但不能独立作谓语，只能与其后的动词原形一起构成谓语，表示说话人的情绪、态度或语气，用来表达建议、请求、可能或意愿等。情态动词,没有人称和数的变化，情态动词后必须跟动词原形,。常见的情态动词有：,can,could,may,might,must,need,shall,will,should,would,。,情态动词,Can,you lift this heavy box?,(,体力,),Mary,can,speak three languages.,(,知识,),Can,you skate?,(,技能,),can,could,此时可用,be able to,代替,。,can,只有一般 现在时和一般过去式,;,而,be able to,则有 更多的时态。,表示,能力,(,体力,知识,技能,),常用情态 动词,can,和,could,表达。,如：,Ill not,be able to,come this afternoon,.(,一般将来时,),He,was able to,go to the party yesterday evening in spite of the,heavy rain.,当表示“,经过努力才得以做成功某事,”时用,be able to,不能用,can,。如：,Can,I go now?,Yes,you,can,./No,you,cant,.,Could,I come to see you tomorrow?Yes,you,can,.(No,Im afraid not.),此时可,与,may,互换,。在,疑问句,中还可,用,could,might,代替,，但,could,might,并不表示过去式，只是语气更委婉。它们不能用于肯定句和答语中。如：,表示,请求和允许,。如：,Theyve changed the timetable,so we,can,go by bus instead.,This hall,can,hold 500 people at least.,表示,客观可能性,(,客观原因形成的能力,),。如：,Can,this be true?,This,cant,be done by him.,How,can,this be true?,表示,推测,(,惊讶、怀疑、不相信的态度,),，用于疑问句、否定句和感叹句中。,Might,/May,I smoke in this room?No,you,mustnt,.,May,/Might,I take this book out of the room?Yes,you,can,.(No,you,cant,/,mustnt,.),may,might,用,May I.,？,征徇对方许可,时比较正式和,客气，而用,Can I.,？,在口语中更常见。,表示,请求和允许,。,might,比,may,语气更委婉，而不是过去式。否定回答时可用,cant,或,mustnt,，表示“,不可以，禁止,”。如：,May,you succeed!,He,may,/might,be very busy now.,Your mother,may/might,not know,the truth.,用于,祈使句,，表示,祝愿,。如：,表示,推测、可能性,(,不用于疑问句,),。,might,不是过去式，它所表示的可能性比,may,小。如：,You,must,come in time.,Must,we hand in our exercise books,today?Yes,you,must,.No,you,dont,have to,/,you neednt,.,must,have to,在回答引出的问句时,如果是否定的，不能用,mustnt,(,禁止,不准,),，而用,neednt,dont,have,to,(,不必,),。,表示,命令、禁止、不得不,。如：,His play isnt interesting,I really,must,go now.,I,had,to,work when I was your age.,Youre Toms good friend,so you,must,know what he likes best.,Your mother,must,be waiting for you now.,must,是,说话人的主观看法,，而,have,to,则强调,客观需要,。,must,只有一般现在时，,have,to,有更多的时态形式。如：,表示,推测、可能性,（只用于,肯定的陈述句,),。如：,You,shall,fail if you dont work hard.,(,警告,),He,shall,have the book when I finish it.,(,允诺,),He,shall,be punished.,(,威胁,),shall,should,shall,用于,第二、三人称,，表示说话人给对方的,命令、警告、允诺或威胁,。,shall,用于,第一人称,，,征求对方的意见,。如：,What,shall,we do this evening?,Will,/,Would,you pass me the ball,please?,I,will,never do that again.They asked him if he,would,go abroad.,will,would,表示,意志、愿望和决心,。如：,表示,请求、建议,等，,would,更委婉,。如,:,During the vacation,he,would,visit me,every other day.,The wound,would,not heal.,It,would,be about ten oclock when she,left home.,would,表示,过去反复发生的动作或某种倾向,。,would,表示过去习惯时比,used to,正式，且没有“,现已无此习惯,”的含义。如：,表示,估计,和,猜想,。如：,I,should,help her because she is in trouble.,You,ought,to,take care of the baby.,You,should/ought to,go to class right away.,Should,I open the window?,should,ought to,should,ought to,表示“,应该,”，,ought,to,表示义务或责任，,比,should,语气重,。,表示,劝告、建议和命令,。,should,ought to,可通用,，但在疑问句中常用,should,。,表示,推测,should,/,ought,to,客观推测,must,主观推测,He,must,be home by now.,(,断定他已到家,),He,ought to/should,be home by now.,(,不太肯定,),This is where the oil,must,be.,(,直爽,),This is where the oil,ought to/should be,.,(,含蓄,),1.,你必须马上回家。,You must go home now.,2.,他一定吃过什么东西了。,He must have eaten something.,3.,吃饭之前不能吃零食。,You mustnt eat snacks before meals.,Practice,4.,我可以问你的名字吗？,May I ask your name?,5.,你能用英语说吗？,Can you speak in English?,6.,我们应该准时去上学。,We should go to school on time.,7.,你没有必要那么做。,You neednt do that,.,以下部分为课本练习，供老师在对答案时选择使用。,Match the signs with the rules and warning.,1,P30,a,b,c,d,e,f,pic,1,No smoking.,2,No eating or drinking.,3,Children crossing.,4,Danger!Be careful of,falling rocks.,5,Children should be,taken care of by,parents.,6,Do not drink and drive.,Read the list of rules and write sentences using,must,mustnt,should,or,shouldnt,.,2,P31,Possible answers:,You must,check in at the main gate when you come to the centre.,You should,climb with someone/wear the correct climbing shoes/wear comfortable clothes.,You mustnt,climb without a rope.,You shouldnt,listen to personal music players while climbing.,Work in pairs.Explain why the rules in Activity 2 are important.,3,P31,Why must you check in when you come to the centre?,Because they want to know who is there.,1 Why must you climb with someone?,Because you can ask for help if you meet some problems.,2 Why must you wear comfortable clothes?,Because comfortable clothes can make you less tired.,3 Why mustnt you climb without a rope?,Because it is dangerous for you.,4 Why shouldnt you listen to music while climbing?,Because you can hear what is going on around you.,People are very(1)_ about the conditions of the ancient forests of Canada and want to save them.Many visitors to the forests use knives to cut their names into the trees,some of which are hundreds of years old.(2)_ there are litter bins,people still throw rubbish into the(3)_ and this causes plants and fish to die.,People from local villages have helped clean up the forests.We hope(4)_ will play their part in(5)_ Canadas forests clean too!,although keep stream tourist worry,worried,Although,stream,tourists,keeping,Complete the passage with the correct form of the words in the box.,4,P31,You should _.,You shouldnt _.,You must _.,You mustnt _.,Now write possible rules for visitors to the forests.,throw rubbish into the litter bins,throw rubbish into the stream,help save the ancient forests,use knives to cut your names into the trees,1.Come and visit me _ you have time.,2.The wall is made of _.,3.The path to the top is not very _.,4.Remember to take a _ with you to sleep in,because it might rain.,5.He lifted up the _ and pointed it at the bear.,6.There was a _ noise in the woods and we all stopped moving.,7.Birds use small _ and leaves to make a home.,gun smooth sticks stone sudden tent whenever,whenever,stone,smooth,tent,gun,sudden,sticks,Complete the sentences with the words in the box.,5,P32,Read the passage and answer the questions.,6,P32,1.What does Zhang,Wenpeng,try to say with his drawing?,2.What does Zhou,Zhiyun,try to say with his painting?,He tries to say that people must wake up to the fact that pollution is causing damage to the progress weve made.,He tries to say that people must not waste electricity.,3.What does the school suggest the students should do?,4.How can a school become a“green school”,？,The school suggests that the students should pass on what they have learnt in school to their parents and,neighbours,.,A school must include education about the environment as part of the timetable to become a“green school”.,Listen and complete the sentences.,7,P33,1.The first thing you have to do is to _ carefully.,2.Think about where _ and whether there are _.,3.You should only take marked _.,4.Make sure you know where _ for lunch.,5.Dont forget to tell people to _ for the people.,6.dont walk when it is _ or in _.,7.You must not try out a _ with a group.,Summary,意义,情态动词,表能力,can/could,表可能性,may/might/can/could,表许可、征求对方许可,can/could/may/might,表请求对方做事情,Will/Would/Could you?,Would you mind?,表建议、邀请,Would you like(to)?,Shall we?,表意愿,would like/love to,表应该、义务,should/ought/must,表命令、禁止、不得不,must/mustnt/have to,表没必要做某事,neednt/dont have to,单项选择。,1.Students in our school _ know,shouting is not allowed in the library.,A.can B.may,C.must D.need,2.You _ drive your car so fast.Its very dangerous.,A.wouldnt B.shouldnt,C.couldnt D.mightnt,3._ I see your ID card,sir?We have to check your information.,A.May B.Must C.Should D.Need,4.Where are you going this month?,We _ go to,Xiamen,but were,not sure.,A.neednt B.must C.might D.mustnt,5.Its rather hot in the room.Youd better,_ the windows or the door.,A.close B.not to close,C.dont close D.not close,6.Wheres Tim?,Im not sure.He _ in the school library.,A.maybe B.must be,C.may be D.will be,7.You made the same mistakes again.You _ be more careful next time.,A.can B.may C.willD.should,8.I have my own room in my house,so I _ do what I want in it.,A.can B.have to,C.need to D.must,9.The man in the office _ be,Mr,Black because he phoned me from London just now.,A.mustntB.cant,C.may not D.neednt,10.According to the air traffic rules,you _ turn off your mobile phone before boarding.,A.could B.would,C.should D.might,11.Good morning.Ive got an appointment with Dr Lee.,Ah,good morning.You _ be,Mrs,Jones.A.might B.must,C.would D.can,Homework,1.Finish the exercises in,Learning English,.,2.Preview the new words and expressions in Module 5.,