九上U4T2SC(1)课件

Unit 4 Amazing Science Topic 2 When was it invented?Amazing Science Would you like to say something about them?ComputerInvent/in America/in 1946Shenzhou Launch/in China/in 2005CloningExperiment/Dolly/DNALook and understandRobots Our Servants in the Future?Hello!We are your friends.We can help you do dangerous and difficult work.Have you ever seen a robot?Would you like to describe it for us?1.Do you think that robots will be part of our lives in the future?2.Robots are meant to be our servants,arent they?3.Do you think robots can think or act for themselves?4.Why does the title have a question mark?Read the passage and discuss the questions with your partner.Find and circle the words in 1a according to the following meanings,then write them down.1.to tell somebody that something bad or dangerous may happen so that they can prevent it()2.to make something happen or appear（）3.a person who is paid to do house work for a family （）4.sure and confident,without any doubts（）5.to behave in a special way towards somebody or something()warncauseservantcertaintreat1.No one knows for certain.没有人确切地知道。no one 与none探究学习探究学习a.no one 用来指人，其后不能接of 短语，用做主语时，谓语动词用单数。No one likes a person with bad manners.b.none 既能指人又能指物，其后可以接of 短语，当of后是可数名词复数时，谓语动词用单、复数均可。None of the students is/are in the classroom.c.特别注意：How many people are there in that room?None.Who is in that room now?No one.How much will the car cost？I cant say for certain.for certain 确切地2.all the time=always 一直，总是3.be surprised at/by对 感到惊讶 be surprised to do sth.4.Once robots can think for themselves,problems may appear.once 在这用作连词，意为“一旦就”,引导时间状语从句。think for oneself 独立思考 探究学习探究学习The boy listened to the radio all the time.The foreign visitors were surprised at the great wonders.I was surprised to hear I had passed the exam.Once you get used to it,you will like it.I often teach my students to think for themselves.5.One scientist warns that if robots start to think for themselves,they will no longer want to be our servants,but our masters.a.warn warn sb.(not)to do.告诫某人(不）做某事 warn sb.about/of sth.警告某人注意某事 b.no longer=not any longer no more=not any more 6.They might treat us as we now treat pets.他们可能会像我们现在对待宠物那样对待我们。a.might 是may 的过去式，可用于指过去，也可用于指现在，但语气缓和、委婉。b.treat as 以 方式对待/把 看做探究学习探究学习7.be meant to do sth.应该做某事8.in the medical field 在医学领域 field 有“学科，领域，专业”等含义9.make a contribution/contributions to 为做贡献注意：make a contribution/contributions to doing sth.10.have an effect/effects on 对有影响探究学习探究学习 I think the police are meant to protect people.He made great contributions to science.We should make a contribution to protecting the environment.Playing computer games too much has a bad effect on health.Try to retell the passage according to the key words.Robots Part of our livesServantsDo dangerous and difficult workThink and act for themselvesMastersLucky petsUnluckya wargreatlymedicalhealthinsidediscoveringeffectsListen to the tape and fill in the blanks.For more than 100 years,peoples lives have been changed _ by inventions.For example,the X-ray machine is a wonderful invention in the _ field.It has made a great contribution to humans _.With its help,doctors can examine the _ of their patients bodies.It is used for _ illnesses.But it also has bad _ on our health.So the X-ray machine should be used carefully.(录音录音p90-2)一、根据一、根据汉语意思补全英语句子。汉语意思补全英语句子。1.没人确切地知道我们的未来是什么样子No one knows _ _ what our future _ _ _.2.机器人会一直像佣人那样为我们工作吗？Do robots _ _us like _ all the time?3.人们对机器人的快速发展感到惊讶。People _ _ _ the rapid development of robots.4.我想，有一天机器人会有自己的思维的。I think that robots _ _ _ _ some day.5.X光机器已为人类做出了贡献。X-ray machines _ _ _ _ _ human beings.for certainwill be likework forservantsare surprised atwill think for themselveshas made great contributions to 二、选择二、选择所给词组的适当形式填空。所给词组的适当形式填空。词组：betweenand;no longer;for certain;treatas;have bad effects on1.We _ robots _ our pets at present.2.The X-ray machine also _ peoples health.3.He is _patient with us.He is easily annoyed(恼怒的).4.That movie is about a war _ the robots _ humans beings.5.Do you know the answer _?treat ashas bad effects onno longerbetween andfor certain三、用三、用所所给给词词的适当的适当形式填空。形式填空。1.We _(warn)not to play soccer in the street.2.I hope our difficulties will soon _ (appear).3.The boss is so _(friendly)to his workers that none of them want to work for him for long.4.Hearing the _ news,all of us felt _ (excite).5.The U.S.A.is _ (develop)than any other country in the world.are warneddisappearunfriendlyexciting excitedmore developed四，选择正确的答案 ()1.The workers made great contributions _the tall building.A.to build B.to building C.build ()2._of the students are playing outside,for its raining.A.No one B.None C.Someone ()3.The policeman warns the boys _ on the street.A.to play B.not to play C.dont to play ()4.The little boy _when he saw his mother.A.cried any longer B.didnt cry any more C.cry no more ()5.Animals _our friends.A.should be treated as B.treat as C.are treated by ()6.We are _ to hear the _ news.A.surprised;surprised B.surprising;surprised C.surprised;surprisingBBBBAC五五，按要求完成句子。，按要求完成句子。1.What will our future be like?（写出同义句）_ will our future _?2.No one knows for certain who will take the place of Mr.Lee.（写出附加疑问句）No one knows for certain who will take the place of Mr.Lee,_ _?3.You are no longer a little boy.（写出同义句）You _ a little boy _ _.4.Robots will be friendly to us.（用unfriendly写选择疑问句）Will robots be friendly _ _ to us?5.Jim will come back home in a few days.（对画线部分提问）_ _ will Jim come back home?How bedo theyarent any longeror unfriendlyHow soon(does he)Read and know more about robots,then discuss together.Robots are everywhere.They have been in space,under the ocean,and inside volcanoes.What do you suppose the future of robots be like?In the future,robots may look,talk and walk just like people do.Some scientists say you may even have robotic friends in a few years,but for this to happen,robots must be able to feel and have emotions.Scientists have already made robots that can act like animals.“Robots will be much more like humans in the future,”a professor said.Will robots take over the world?Most scientists dont think this will happen.At least that is until robots can think.If a robot cant think,it can only do what its told to do by people,so we dont need to worry yet.Will you worry about robots?Why?Design a robot.Write a passage about it.The following questions may help you.1.Whats its name?2.What does it look like?3.What can it do for us?4.Can it think for itself?5.What are its advantages and disadvantages?Here is a robot._.In short,this robot is very useful to us.Homework:Write a short passage to introduce your own invention.