Unit 6 Using language P65 课件-(2022)新外研版高中选择性必修第四册《英语》.pptx

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1、Using language P65 Unit 6 Space and beyond Lead-inUnderline the sentences below in the reading passage.a.Millions watched that first lunar landing aware of the many things that could go wrong.b.With the eyes of students across the nation upon her,she might have inspired an entirely new generation of

2、 astronauts and space scientists.c.The world went into shock,most people having assumed that this space flight would be no more dangerous than travelling in an aeroplane.d.I can remember that day so clearly,watching the take-off on TV at school,e.But there was never any doubt that manned flights wou

3、ld continue,.f.The sacrifice of the Challenger calls to us,reminding us that we must continue to reach for the stars,Presentationa.Millions watched that first lunar landing aware of the many things that could go wrong.b.The world went into shock,most people having assumed that this space flight woul

4、d be no more dangerous than travelling in an aeroplane.c.I can remember that day so clearly,watching the take-off on TV at school,d.The sacrifice of the Challenger calls to us,reminding us that we must continue to reach for the stars,1 Which sentence talks about ability?2 Which sentence talks about

5、possibility?3 Which sentence talks about necessity?4 Which sentence talks about prediction?Look at the sentences and answer the questions.Sentence c.Sentence a.Sentence d.Sentence b.u情态动词,即表示人的情感和态度的动词,它们本身有一定的词义,但是不能独立作谓语,只能跟动词原形一起构成谓语。u常见的情态动词主要有:can(could),may(might),must,need,shall(should),will(

6、would),dare等。等。一、常见情态动词的用法:一、常见情态动词的用法:can和和could用法例句表示能力,意为“能,会”;could表示过去的能力。She can speak French fluently.她能讲一口流利的法语。can可用于肯定句中,表示客观或理论上的可能性。An experienced teacher can make mistakes.一位有经验的老师也会犯错。表示请求或允许。在疑问句中,could可以代替can,语气更委婉,肯定回答时要用can,不用could。Can/Could I use your bike tomorrow morning?明天上午我可以

7、用你的自行车吗?Yes,you can.是的,可以。表示说话者的主观推测,意为“可能”,用于否定句和疑问句中。can比could语气强。He cant be our manager.He has gone to Beijing.他不可能是我们经理。他已经去北京了。表示惊异、怀疑、迷惑等态度,常用于否定句和疑问句中。How can you treat me like that?你怎么能那样对我?一、常见情态动词的用法一、常见情态动词的用法:may和和might用法例句表示请求或许可。在疑问句中,might可以代替may,语气更加委婉。给予许可时用may,不用might。Might I ask f

8、or a picture of your little daughter?Yes,you may.我可以要一张你小女儿的照片吗?是的,可以。表示推测,意为“或许,可能”,通常用于肯定句和否定句中。might比may语气弱。I really dont like James.Why did you invite him?Dont worry.He might not come.我真的不喜欢詹姆斯。你为什么邀请 他?别担心。他或许不会来。表示祝愿,常用结构为:May+主语+动词原形!May you be happy every day!愿你快乐每一天!一、常见情态动词的用法一、常见情态动词的用法:m

9、ust和和have to用法例句表示义务,意为“必须”。must强调说话人的主观看法,have to则强调客观需要;在回答带有must的问句时,否定式常用need not(neednt)或dont have to,而不是用must not。We must act as quickly as possible now.现在我们必须尽快采取行动。I have to go now,because my mother is in hospital.我现在不得不走了,因为我母亲在住院。must用来表示推测,意为“一定”,只能用在肯定句中。must的肯定程度比can强。You must be hungry

10、 after a long walk.长途跋涉之后,你肯定饿了。must表示“偏要,非要不可”。常用于疑问句和条件句中,偶尔也用于陈述句中。If you must go,at least wait until the storm is over.如果你非要走,至少要等到暴风雨停了。mustnt表示禁止,意为“不得,不允许;一定不要”。You mustnt play with the knife,or you may hurt yourself.你千万不要玩刀,否则会伤到自己的。一、常见情态动词的用法一、常见情态动词的用法:shall用法例句用于第一、三人称的疑问句中,表示说话者征求对方的意见。

11、Shall he come in now?他现在可以进来吗?用于第二、三人称的陈述句中,表示说话者的命令、警告、威胁、允诺、决心等。You shall be punished for what you have done.你会为你的所作所为受到惩罚。用于条约、规定、法令、法律等文件中表示义务规定,意为“必须”。One of our rules is that every student shall wear school uniform while at school.我们有一条规定,那就是每个学生在校期间都必须穿校服。一、常见情态动词的用法一、常见情态动词的用法:should和和ought

12、to用法例句should表示责任、义务、劝告、建议等,意为“应该”。We should be strict with ourselves.我们应该严格要求自己。should表示出乎意料、惊讶的口气,意为“竟然,居然”。Such a gentleman should do that.这样一位绅士竟然会做那种事。ought to表示义务、责任、劝告等,意为“应该”,语气比should略重。You ought not to be so selfish.你不应该这么自私。should和ought to表示推测,指合乎理想的情况或结果,意为“按说应该”。Try phoning Roberthe shou

13、ld be home by now.给罗伯特打个电话试试,他现在应该到家了。一、常见情态动词的用法一、常见情态动词的用法:will和would用法例句与各种人称连用,用于陈述句中,表示主语的意志、意愿或决心。will指现在,would指过去。I will never talk to him again.我再也不会和他说话了。表示征求意见或提出请求,多用于第二人称疑问句中。would比will语气委婉。Will/Would you please close the window?请把窗户关上好吗?表示习惯性动作、固有属性或必然趋势,意为“总是;习惯于”。will指现在,would指过去。Fish

14、 will die without water.没有水,鱼会死的。二、二、其他情态动词的用法情态动词的用法用法例句used to do表示“过去常常做”。There used to be a building at the street corner,but now it is a library.街道拐角处过去有座楼房,而现在是一个图书馆。had better do表示“最好做”,其否定形式为had better not do。One had better see life in its various aspects when young.一个人最好在年轻时就能看到生活的各个方面。woul

15、d rather do than do表示“宁愿做”。I would rather stare at the star-filled sky than watch a TV set.我宁可凝视繁星满天的夜空也不愿看电视。三、三、情态动词+have donecould have done本可以cant/couldnt have done不可能做过may/might have done可能做过must have done一定做过should/ought to have done本应该/竟然做过neednt have done本不需要做had better have done当时最好做过would

16、like/love to have done宁愿做过From what you said,she must have told you all about it.从你所说的来看,她一定把一切都告诉你了。Mr Smith cant have gone to Beijing,for I saw him in the library just now.史密斯先生不可能去北京了,因为我刚才还在图书馆看见他了。语法填空语法填空(情态动词情态动词)。I _ have worried before I came to the new school,for my classmates here are ver

17、y friendly to me.Ellen is a fantastic dancer.I wish I _(dance)aswell as her.No one _ be compared with Ellen in dancing.Jack is a great talker.Its high time that he _(do)something instead of just talking.I got close enoughto hear them speaking Chinese,and I said“Ni Hao”justas I _ do in China.Teachers

18、 recommend parents _(allow)their children under 12 to ride bicycles to school for safety.Students _ obey school rules.One of our rules is that every student_ wear school uniform while at school.It is required by the rules that students_ get grades not lower than 85 in any subject in order to get the

19、 scholarship.It is beyond my understanding that many adults _ be so crazy about Harry Potter series like me.dancedneedntcandidmightshould not allowmustshallshallshouldRead the passage and choose the correct modals.2PracticeOn 15 October 1997,the Cassini spacecraft set out on a mission to explore the

20、 planet Saturn.So great was the distance from Earth that it would/shall need to travel for almost six years to reach its destination.When it reached Saturn,it sent back amazing images of the planets famous rings viewed in ultraviolet light.Cassini made numerous trips around Saturn so it could/must c

21、ollect data.Over the following years,Cassini took some 450,000 images of the planet and its moons.Finally,on 15 September 2017,Cassini was pointed towards Saturn so that it should/would meet a fiery end.Scientists had decided that Cassini could/must be destroyed this way,so it must/would not collide

22、 with any of Saturns moons.In its nearly 20-year mission,Cassini provided so much information that scientists could/would not process it all.No wonder so many people took to social media to bid it goodbye,saying,“Farewell,dear Cassini!We shall/should never forget you!”Look at the picture and tell a story using modals where appropriate.3ProductionI couldnt believe it when I looked into the Martian sky.Take it in turns to draw a picture of space exploration and ask your partner to tell a story based on it.l Organise ideas in a logical way.l Use modals where appropriate.

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