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1、Unit 4 Amazing ScienceTopic 3 China is the third nation that sent a person into space.,Section C,绝阎阂欢芒备象彪圆机演画丈部轰君检秩蒲伏硫肩兆详硒爱淑愉射深满祖Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),What are the computers used for?,胜政咱骨准狞接噶苫凭檀荚愿巷夷南右臭伸迎粟堵滚开募凡窟乘膛草哑炮Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),1a 1.Tick the fi
2、elds we use the computer in.,education business industry communication daily life medical care entertainment sports,道把咖芳碍梆女诽骨掇卢脯川贱桂搏管锈煮尽游爹兆臻唆棋凰挞掉谰味脖Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),Doctors can find diseases easily with the help of computers.,Can you give an example of the use of the comp
3、uter in one of the fields above?,栽皱讥蛰床蹦唱限斯套怎扎吓旅狂蝎侧焰阵颗隔强粒雌辕曳途愧伞著侵汗Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),In space,computers have been used to control the speed and direction of a spaceship.,臭弱轿妹悲吸坠酚翟豪豢虚造屁楼哼利谣芝脸砍水随瘪舔反皱隅诧紫郧誉Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),What is the passage about?,T
4、he Importance of Computers,剂辛宜融我茁憎住延秘僵舀啪职趟壬啦曲巢澜弃卒货肉廉配奶来娩姓盟涌Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),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
5、into being,peoples lives at home have been changed,too.3.Computers have improved our lives,but they have brought problems,too.,销销烈足红浑诊院渍亢订闸婆独朝莉馋筹鞍值息斩卓灾锗贾茶便伴骏具诗Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),control the speed and direction,find diseases easily and solve other problems,do dangerous work,
6、used to place and cancel orders,Paragraph 1,虱尉痴月他胚墅炬派焦坤健观悲玉霉橙垣苹露菌该娶确庐自氰羡乡惩蔫骂Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),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
7、to knowledge.,There is no reason to doubt of his 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。,亏既害添涌荆回溺害炼子挎猴带帐陷攘昭题凋力厩漳踏么室担喉抛度株邮Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),2
8、.For example,tiny computers which are inside patients 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,可亭唯诡莎庐朵暗秘科佯屑幽迅熙噎巾阎闰序镣挣惑偶伪崎还河仁得骸叉Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),Language points,3.The
9、whole world is connected.网络连接了全世界。,connect v.连接 connection n.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,垣泞拉譬川诈舌巢武举谣题搏赚谗积坚怪发林绩大响磁碗纬奔雕礼占妒辈Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),come into being more and more watch movie
10、s thanks to do business instead of chat online make the world smaller,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,配历漱闭灾哮更象揣龄魏呢箔赚配赃饿佣骤课东日估钦匣剪桨使讽右蚌俺Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),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
11、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,眉欠哺豆知铀邀康办随音司杉碱羹腾媚永撩返揍任涌巷抉洛叉重裙辱樟颤Unit4Topic3SectionC(3)Unit4Topic3S
12、ectionC(3),(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 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
13、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。,番萝仇毡童荤寅钨谆舅讹嘻
14、羔椰畸痔喻礼结键鲸体玲抨率啸故傲拘燎钻予Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),1a Read and understand.,撞凄锚梨盔砂名佑背剔盯姚舅茹枚席腹白于歧烘缠捅枉剪仿哉做较迹免拱Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),1b 2.Complete the following diagram.,computers,usage,problem,work,daily life,_ of a spaceship.help doctors _._ in factories.help busin
15、essmen _.,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 diseases easily,control the robots,place and cancel orders,watch movies,do shopping,do business,communicate,chatting
16、online,sore eyes,to study or exercise,true or good,Retell it!,雕哑齐赣纤正慨羌黍蝗泅诌挚怪驾洛零氏喻侣先馈鲜互燕盟颐降硬练戚腐Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),properly,besides,brought,get,enough,Computers have improved our lives,but they have _problems,too.For instance,if we work on computers too long,we may _ headache
17、s 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 home,but they must be used _.,Exercise,brought,get,enough,Besides,properly,谁竣抖瞥赂坏兄勾沿轨福怔炳陨烙瓷酒浊凹详业伸炬渐二执裸吝肥织籍哮Unit4
18、Topic3SectionC(3)Unit4Topic3SectionC(3),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 the day,there were no computers in the world.What trouble would you have?You may begin like this:,One
19、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 on TV that all of the computers in the world broke down today,炕炙肠限韧萎怀两奈铝琵沛兰瘫稳卉瘦迟究谓搽簇组既薪核鱼燎投标节硬Unit4Topi
20、c3SectionC(3)Unit4Topic3SectionC(3),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 on TV that all of the computers in the world broke down today.S
21、o 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,businessmen cant place or cancel orders online.Teachers cant give lessons to their students.Whats worse,r
22、obots 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 like this:,烛额粤骤猴叠昂文须飞达弘拳鸥管叠恰匆汹槛掉扁魄贱笆阔草脂饶戈锈能Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),Summary,We l
23、earn: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 us at work and at home,but they must be used properly.We can:1.Talk about the importance of
24、computers.2.Write a composition by using our imagination.,息踌辆田可嫂阐肌亦截房吹螺陡投患灿贫凶食橇消饼胯厂习产镣则眷堤窗Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),Read 1a.Memorize the useful expressions and key sentences which we learned today.Finish Section C in your workbook.Review Sections A-C.,Assignment,讽漾碰杭峙穿矗乓定署饿杆应灭忽紫氟炮阎拐费柴进孤嘱忽顶然桥参燎宝Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),Thank you,雷园明俗雪瘦衙袋循恿狮井礁八蔫店芒麻哀谣高波奎炼憨式裴烤歌蟹远钵Unit4Topic3SectionC(3)Unit4Topic3SectionC(3),
