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1、Unit 4 Amazing ScienceTopic 3 China is the third nation that sent a person into space.,Section C,学钧蔡阜强拟缸莱丁脱帧瑞罚膜尊片脆问仑窥蔗赠锌抬落撤肖猴裂希毡恒Unit4Topic3SectionCUnit4Topic3SectionC,What are the computers used for?,闻怯宣椭入腔脆瘪剿乒峡鸡励柞新扮来啡桶瓜紫散曼丸明滔取允骋呆珠胃Unit4Topic3SectionCUnit4Topic3SectionC,1a 1.Tick the fields we use
2、the computer in.,education business industry communication daily life medical care entertainment sports,钮每猖寄众倡岗宿滓幻遂增嚣蔗赶启撂邹等跳窘吴挝钵嘻五涉垫地怒曹锻Unit4Topic3SectionCUnit4Topic3SectionC,Doctors can find diseases easily with the help of computers.,Can you give an example of the use of the computer in one of the
3、 fields above?,言红震橱獭防苦傣探跪箩料晦嘘跳然遥诱群像赔札咬万旷秆华询撮幕笨戈Unit4Topic3SectionCUnit4Topic3SectionC,In space,computers have been used to control the speed and direction of a spaceship.,背舒三闹崖酌钡导荫怨宛衡几普幼益祷手欣玛麓雍舞索粮撼条统拯烂龙斯Unit4Topic3SectionCUnit4Topic3SectionC,What is the passage about?,The Importance of Computers,漾挖田
4、绿警朱勉改磷俐典蓝详谤魔既裴蚊挥胰许藉大蹭梯熔驻阔菩续幸纸Unit4Topic3SectionCUnit4Topic3SectionC,Underline the topic sentence of each paragraph.,1.Since computers were invented in the USA in the 1950s,they have become very important in many areas of work and leisure.2.Since the Internet came into being,peoples lives at home hav
5、e been changed,too.3.Computers have improved our lives,but they have brought problems,too.,辖翱顾壁欢邑铀到糕笑褐侍所貉谈汁刺想个套写内妨贞吟佣兄泊捎苫酚婴Unit4Topic3SectionCUnit4Topic3SectionC,control the speed and direction,find diseases easily and solve other problems,do dangerous work,used to place and cancel orders,Paragraph
6、1,穴椰突恨状屠砒怎卜惮慌绢吃余泊引辆莫华乘薛秸旁厚逛琶欠翘停辈孔情Unit4Topic3SectionCUnit4Topic3SectionC,There is no doubt that we will be successful.,I dont doubt that they will be able to solve the problems.,doubt n.&v.怀疑，疑惑,(2)doubt(vt.)+从句,(3)doubt(vi.)+about/of,Doubt is the key to knowledge.,There is no reason to doubt of his
7、 honesty.,I doubt whether/if hell change his mind.,(1)doubt(n.),Paragraph 1,1.There is no doubt that computers are very useful in technology and business.毫无疑问电脑在技术和贸易业都非常有用。,旷侣险际哪肩纤纱怔宽泰卒峰溜蜗讯矛躯悄差情遵烯具稻鲸张尘凿锭赐耍Unit4Topic3SectionCUnit4Topic3SectionC,2.For example,tiny computers which are inside patients
8、bodies can keep their hearts beating normally.例如，病人体内植入微电脑能帮助病人的心脏正常搏动。,tiny very small in size adj.极小的，微小的,a tiny girl,Paragraph 1,prep.在内adv.在里面,绘萌事尘椎攻拨涣滋熟惧荚控多簧阑继剿乙敌阎官舰底夯会萤试柳唉非闭Unit4Topic3SectionCUnit4Topic3SectionC,Language points,3.The whole world is connected.网络连接了全世界。,connect v.连接 connection n
9、.关系，联系,1.connect A with B 使A与B连接,2.connect sth.(to sth.)使电、气、水等接通,3.connect sb./sth.(with sb./sth.)与有联系，把联系起来,Paragraph 2,酶硅浦糜拉幸筑照戚窜歼狈盘绅渊拘能蜗涅倔五献扯郭瘪嘘靴疹埂釜哲瓤Unit4Topic3SectionCUnit4Topic3SectionC,come into being more and more watch movies thanks to do business instead of chat online make the world smal
10、ler,做买卖形成，产生越来越多看电影代替网上聊天使世界更小多亏，由于,Paragraph 2,譬哼亦日又根畅专娟耸电华被掺羹汰滁踞砚贤天访樊疙通汤瞎屿习韶蠕倔Unit4Topic3SectionCUnit4Topic3SectionC,1.For instance,if we work on computers too long,we may get headaches or sore eyes.比如：如果我们使用的电脑工作的时间太长，我们就会头昏眼花。for instance=for example 用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。such as 用来列举事
11、物时，一般列举同类人或事物中的几个例子。E.g.（1）Many countries,Japan,for instance(for example),has a lot of earthquakes.（2）I like fruits,such as apples,pears and bananas.,Paragraph 3,剧佣李鳃垛欢彪灰护亮讼来胎靖蝉卜伦逢剩寥粗阁彰砾托恿抖瞅结拿旅庸Unit4Topic3SectionCUnit4Topic3SectionC,(1)besides与except用于肯定句时，except意为“除之外（不 再有）”；besides意为“除之外（还有）”。如：I
12、have another blue pen besides this one.除了这支外，我还有另一支蓝色钢笔。（1+1，共2支）We all passed the exam except Tom.我们都通过了考试，汤姆除外。（整体中汤姆一人不及格）(2)except前几乎总有all、any、every、no及其复合词等词。如：He answered all the questions except the last one.除了最后一个问题没答外，其余问题他都答了。(3)except后接名词、代词、动名词和动词原形，这时except=but；但except后跟副词、介词短语时，不能用but代
13、替。如：The window is never open except in summer.这扇窗户从来不开，除夏季外。He did nothing except/but clean the house.他只是打扫了房子。,2.Besides,not everything we read on the Internet is true or good for us.另外，我们在网上看到的东西并不都是真实的、有益的。,惭晾慌芜辰耘蛀貉诬坡进永丝炸拽垫叶餐欧牛括赵硫帧禾氖脚翻瑟生锣刷Unit4Topic3SectionCUnit4Topic3SectionC,1b 2.Complete the f
14、ollowing diagram.,computers,usage,problem,work,daily life,_ of a spaceship.help doctors _._ in factories.help businessmen _.,play games and _._ and _ at home._ by sending e-mails and _.,get headaches or _.dont have enough time _.something on Internet is not _.,control the speed and direction,find di
15、seases easily,control the robots,place and cancel orders,watch movies,do shopping,do business,communicate,chatting online,sore eyes,to study or exercise,true or good,Retell it!,凑纪笋旭敦食隧煌帘强秧蛔蛙诺朔乙芭乱坦腿堕触毕抱辗岳唾删烘庭劫而Unit4Topic3SectionCUnit4Topic3SectionC,properly,besides,brought,get,enough,Computers have i
16、mproved our lives,but they have _problems,too.For instance,if we work on computers too long,we may _ headaches or sore eyes.If we play computer games too much,we wont have _ time to study or exercise._,not everything we read on the Internet is true or good for us.Computers help us at work and at hom
17、e,but they must be used _.,Exercise,brought,get,enough,Besides,properly,缓谴墨陡值弥樱汗烘窒抵棵冒邱纪橱喝角燎颇漾幼常颓箕苫舍算佣汤木瘴Unit4Topic3SectionCUnit4Topic3SectionC,2 Write a short passage with the title with One Day Without Computers.The following information may help you.Suppose you were on a special day in 2030.During
18、 the day,there were no computers in the world.What trouble would you have?You may begin like this:,One Day Without Computers Today,when I got up,I just turned on the computer as usual,but it didnt work.Then I tried my brothers PC,my parents,even my dogs,but none of them worked.Later,it was reported
19、on TV that all of the computers in the world broke down today,丧翁茄液洽公灰郝缮脑般撤美咙魔皱塌刽塞降邵苇作琼蜡停伊棍忠趾蝉我Unit4Topic3SectionCUnit4Topic3SectionC,One Day Without Computers Today,when I got up,I just turned on the computer as usual,but it didnt work.Then I tried my brothers PC,my parents,even my dogs,but none of
20、them worked.Later,it was reported on TV that all of the computers in the world broke down today.So the world is quite different.For instance,we cant play games,watch movies or do shopping at home.Besides,we cant communicate by sending e-mails or chatting online.Without the help of computers,business
21、men cant place or cancel orders online.Teachers cant give lessons to their students.Whats worse,robots controlled by computers cant do dangerous work for humans.Even the doctors cant find the diseases easily.In short,we almost have trouble with everything withoutcomputers today.,You can write it lik
22、e this:,惟糜像扁多滦冀底锌浸杯戍霍兴牧坎元希乐粳乃观耍权谩凤险溶猎乎必奉Unit4Topic3SectionCUnit4Topic3SectionC,Summary,We learn:1.Some words:doubt,tiny,inside,brain,cancel,connect 2.Some phrases:no doubt,for instance 3.Some sentences:(1)There is no doubt that computers are very useful in technology and business.(2)Computers help u
23、s at work and at home,but they must be used properly.We can:1.Talk about the importance of computers.2.Write a composition by using our imagination.,巷阴嫩疮阀汉思壬阜迈市等绘酱泵诺文港搭厚性挥洼完葬隋捡腔耸辱祸达Unit4Topic3SectionCUnit4Topic3SectionC,Read 1a.Memorize the useful expressions and key sentences which we learned today
24、.Finish Section C in your workbook.Review Sections A-C.,Assignment,侗腻雨盅从止拙语诀幸柒牢冰咽亲棋盔抗痉聪摸诫柳到胳怯爷绿危所沼匝Unit4Topic3SectionCUnit4Topic3SectionC,Thank you,侄姚蛰矛芯闭沮鲍弦闺驻曳瞒每票批愁谐博菊酵驼歹疮子肚辑砒扣洽懂栖Unit4Topic3SectionCUnit4Topic3SectionC,1a Read and understand.,汰都捐伟涟鼎烁欧人凰家星铜糊尼持炔减煎瘫苗又仑取沸馏姐瘸借诺瞄设Unit4Topic3SectionCUnit4Topic3SectionC,
