英语外研版 (2019)Unit 3 The world of science背景图课件ppt

这是一份英语外研版 (2019)Unit 3 The world of science背景图课件ppt，共39页。PPT课件主要包含了canal　 ，civil ，cliff　 ，gorge　 ，generate　 ，submerge ，global ，为提供　 ，有史以来　 ，想出想起　 等内容，欢迎下载使用。
The Great Wall f China is called the “Ten-thusand-li Great Wall” in Chinese.In fact,it’s mre than 5,000 kilmetres lng.It winds1 its way frm west t east,acrss deserts,ver muntains,thrugh valleys till at last it reaches the sea.It is ne f the wnders f the wrld.The Great Wall has a histry f ver twenty centuries.The first part f it was built during the Spring and Autumn Perid.During the Warring States Perid,mre walls were put up t defend2 the brders f the different kingdms.It was during the Qin Dynasty that the kingdm f Qin united the different parts int ne empire.T keep the enemy ut f his empire,Emperr Qin Shihuang had all the walls jined up.Thus,the Great Wall came int being.
The Great Wall is wide enugh at the tp fr five hrses r ten men t walk side by side.Alng the wall are watchtwers,where sldiers used t keep watch.Fires were lit n the twers as a warning when the enemy came.It was very difficult t build such a wall in the ancient days withut any mdern machines.All the wrk was dne by hand.Thusands f men died and were buried under the wall they built.The Great Wall was made nt nly f stne and earth,but f the flesh and bld f millins f men.Tday the Great Wall has becme a place f interest nt nly t the Chinese but t peple frm all ver the wrld.Many f them have cme t knw the famus Chinese saying,“He wh des nt reach the Great Wall is nt a true man.”
单词注释1.wind v.蜿蜒;曲折而行　2.defend v.保卫,防御难句剖析It was during the Qin Dynasty that the kingdm f Qin united the different parts int ne empire.就是在秦朝,秦国把不同的部分联合起来组建一个王国。“It ”为强调句结构,可还原成一个完整的句子:The Kingdm f Qin united the different parts int ne empire during the Qin Dynasty.
导读诱思What des the saying in the last paragraph really mean? 答案:It means reaching the Great Wall is nt an easy task.It needs determinatin,curage and perseverance.That’s what a true man takes t reach the Great Wall.
Sectin Ⅰ　Intrductin,Reading & Vcabulary
　Pre-reading　 一、根据英文释义选出相应单词submerge　canal　glbal　civil　generate　cliff　histricalengineering　grge　structure1.　　　　　　a lng straight passage dug in the grund and filled with water fr bats and ships t travel alng 2.　　　　　　cnnected with the peple wh live in a cuntry 3.　　　　　　a high area f rck with a very steep side  4.　　　　　　the activity f applying scientific knwledge t the design,building and cntrl f machines,rads,bridges,electrical equipment .etc. 
engineering　
5.　　　　　　a deep narrw valley with steep sides 6.　　　　　　the way in which the parts f sth. are cnnected tgether,arranged r rganised  7.　　　　　　t prduce r create sth. 8.　　　　　　cnnected with the past  9.　　　　　　t g under the surface f water r liquid  10.　　　　　　cvering r affecting the whle wrld  
structure　
histrical　
二、短语翻译 　　　　 2.f all time 　　　　 3.think f 　　　　 4.nw that 　　　　 5.equal t 　　　　 6.live a happy new life 　　　　 7.　　　　　起源于 8.　　　　　梦想;渴望 9.　　　　　阻止 10.　 　　　　发电 11.　　　　　(梦想等)变成现实 12.　　 　　　全球变暖 
generate electricity
glbal warming
　While-reading　 三、阅读The Three Grges Dam,完成下列各题1.Why is the Three Grges Dam cnstructed?A.It is cnstructed t harness the Yangtze is cnstructed t cntrl flding and prvide pwer fr the central regin f is cnstructed t reduce the air pllutin caused by burning is cnstructed t realise Ma Zedng’s came up with the idea f cnstructing the dam?A.Ma Zedng.　　　　B.Sun Yat- gvernment.D.Sme experts.
3.Which f the fllwing is TRUE abut the Three Grges Dam?A.It is walls f stne t hld back is the third largest dam in the is nearly 200 metres high and 15 kilmetres has cst mre than any ther cnstructin prject in histry.
　Pst-reading　 四、篇章结构
suggested　
Descriptin　
pwer statin　
Cntrlling　
Disadvantages　
Submerging
五、课文缩写The Three Grges Dam,the biggest cnstructin 1. 　　　　　 in China,has been built t 2.　　　　　flding and 3.　　　　hydr-electric pwer fr the central regin f China.The dam is nearly 200 metres high and 1.5 kilmetres wide.It is the largest hydr-electric pwer statin and dam in the wrld and has 4.　　　　　 mre than any ther cnstructin prject in 5.　　　　　. The dam will 6.　　　　　 electricity equal t abut 40 millin tns f cal withut causing s much air 7. 　　　　　. 
The reservir has 8.　　　　　 2 cities,11 cunties,140 twns and mre than 4,000 villages.Mre than a millin peple have mved frm their hmes and they’re living a 9. 　　　　　 new life in different areas. The Three Grges area is ne f the mst beautiful areas f China and the prject has flded sme f China’s mst famus 10.　　　　　 sites.Sme f them are being remved and sme are being put int museums. 
1.Mst f the Great Wall dates frm the Ming Dynasty(1368-1644).大部分长城始于明朝(1368~1644)。★考点:date vi.始于(某一历史时期)Dragn Bat Festival dates frm abut 2,000 years ag.端午节始于约2,000年前。考点延伸1)date back t 和 date frm做谓语时,常用一般现在时,无被动语态,无进行时,做定语或状语时,常用动词-ing形式。Have yu visited the temple dating back t the Sng Dynasty?你参观了起源于宋朝的那座庙了吗?
2)阅读下列句子,体会黑体词的词性及含义①The date n the letter was 30th Octber 1960.这封信的日期是1960年10月30日。词性:名词　含义:日期②The letter is dated July 20th.那封信的日期是7月20日。词性:动词　含义:注明日期③D yu have a date tnight?今晚你有约会吗?词性:名词　含义:约会④She has been dating Rn fr several mnths.她与罗恩谈恋爱已有数日。词性:动词　含义:与(某人)谈恋爱
3)阅读下列句子,体会date的相关短语及含义①The traditinal friendship between ur tw peples dates back t ancient days.我们两国人民之间的传统友谊可以追溯到遥远的过去。短语:date back t　含义:追溯到 ②She ften wears clthes that are right up t date s she thrws away thse that are ut f date.她经常穿着最时尚的衣服,所以就把那些过时的衣服扔掉。短语:up t date　含义:现代的;时新的 短语:ut f date　含义:不再流行的;过时的 
③I have a date with my girlfriend tnight.我今晚和女朋友有个约会。短语:have a date with　含义:与……约会 ④They’ve set a date fr the wedding.他们已经定好了婚礼日期。短语:set a date fr　含义:定……日期 
2.The airprt is within five hurs’ flying time f half the wrld’s ppulatin and is designed t accmmdate 80 millin passengers a year.全球半数人口居住地均在距离该机场5小时航程以内,该机场被设计为每年可接待乘客8,000万人次。★考点:accmmdate vt. 容纳(乘客等)The htel can accmmdate mre than 500 guests.这家酒店可以容纳500多位客人。Can yu accmmdate me fr tw nights?你能让我住两晚吗?
考点延伸1)阅读下列句子,体会黑体词的词性及含义①He will accmmdate me with the use f his huse,while he is abrad.他在国外期间将把他的住宅交给我使用。词性:动词　含义:提供住宿②Our schl prvides accmmdatin fr the students.我们学校为学生提供住宿。词性:名词　含义:住宿
2)阅读下列句子,体会accmmdate的相关短语及含义①I will accmmdate my plans t yurs.我修改一下我的计划,以便和你的计划相适应。短语:accmmdate sth. t sth.　含义:适应;迁就;迎合 ②The bank will accmmdate yu with sme mney.银行将贷给你一笔钱。短语:accmmdate sb.with sth.　含义:准予或提供给某人(某事物) 
3.Ma Zedng wrte a pem in which he dreamed f “walls f stne t hld back cluds and rain till a smth lake rises in the narrw grges”.毛泽东写过一首词,在词中,他想象了“更立西江石壁,截断巫山云雨,高峡出平湖”的壮丽景观。★考点一:dream f 梦想;渴望We all dream f a wrld at peace.我们都梦想有一个和平的世界。
考点延伸阅读下列句子,体会黑体词的词性及含义①I didn’t dream last night.我昨晚没有做梦。词性:动词　含义:做梦②My sn’s dream is t be an astrnaut.我儿子的理想是当宇航员。词性:名词　含义:理想③Peple wh said we wuld g t the mn used t be called dreamers.从前把那些说我们要登上月球的人都称之为空想家。词性:名词　含义:做梦的人;空想家
★考点二:hld back阻止The villagers built banks f earth t hld back the fld water.村民们用泥土筑起堤坝来阻止洪水。考点延伸阅读下列句子,体会hld的相关短语及含义①Yu’re hlding it back frm me.你在瞒着我。短语:hld back　含义:隐瞒 ②Can yu hld n?I’ll try t find her.别挂电话好吗?我去把她找来。短语:hld n　含义:(打电话时用语)请等一下,不要挂 
③My father said that we shuld hld n t ur dreams.父亲说我们应该坚持我们的梦想。短语:hld n t　含义:坚持 ④She held ut her hand t take her mther’s hand.她伸手去抓妈妈的手。短语:hld ut　含义:伸出 ⑤We were held up fr nearly an hur n ur way by the traffic accident.我们在路上被交通事故耽搁了近一个小时。短语:hld up　含义:使停顿;耽搁 ⑥I threw the rpe and he caught hld f it.我把绳子扔了过去,他一把就抓住了。短语:catch hld f　含义:抓住 
★考点三:narrw adj.狭窄的The rad is t narrw fr cars t pass.路太窄了,车辆过不去。He has a narrw mind.他心胸狭窄。考点延伸阅读下列句子,体会黑体词的词性及含义①He narrwed his eyes and smiled.他眯起眼睛,笑了。词性:动词　含义:使变窄②She has a rather narrw view f the wrld.她对世界的认识有些偏见。词性:形容词　含义:偏狭的;狭隘的
③One bullet struck his car,narrwly missing him.一颗子弹击中了他的汽车,差点打中他。词性:副词　含义:勉强地;以毫厘之差
完成句子4)最后,他死里逃生了。Finally,he had a 　　　　　escape. 5)他差一点被杀死。He 　　　　　escaped being killed. 6)他们计划缩小进出口的差额。They planned 　　　　　　　　　　the gap between imprts and exprts. 
4.Nw his dream has cme true.如今,他的理想变成了现实。★考点:cme true(梦想等)变成现实His dream f being a dctr has cme true.他当医生的梦想实现了。May all yur wishes cme true!愿你梦想成真!
考点延伸阅读下列句子,体会cme的相关短语及含义①What has cme abut?发生了什么事?短语:cme abut　含义:发生 ②Oh,lk.The sun’s cme ut.喂,瞧,太阳出来了。短语:cme ut　含义:出来,出现 ③I came acrss a grup f children playing.我偶然遇到一群正在玩耍的小孩。短语:cme acrss　含义:偶遇 ④I hpe yu can cme up with a better plan than this.我希望你们能提出一个比这个更好的计划。短语:cme up with　含义:想出;提出 
5.Sun Yat-sen,wh was the leader f the 1911 Revlutin,first suggested the idea f a dam acrss the Yangtze River in 1919.1911年(辛亥)革命的领导人孙中山,于1919年首先提出了建造横跨长江的大坝的设想。★考点:suggest vt.建议;提议The dentist suggested that she (shuld) cme anther day.牙医建议她改天再来。I suggest ging t the park n Sunday.我提议星期天去公园。
考点延伸1)阅读下列句子,体会黑体词的词性及含义①D yu have any suggestins?你有建议吗?词性:名词　含义:建议②That girl’s sun-tanned face suggests excellent health.那个姑娘被太阳晒黑了的脸表明她身体非常健康。词性:动词　含义:表明
2)suggest 作“建议,提议”讲时,后接宾语从句时用虚拟语气:shuld + 动词原形(shuld可以省略)。作“表明,暗示”讲时,后接宾语从句不用虚拟语气,用陈述语气。①Her expressin suggested that she did well in the exam.她的表情表明她考得很好。②He suggest that the meeting (shuld) be put ff.他建议推迟会议。