英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points

1、Unit 4 How Life Began on the Earth Language points英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointsPlease retell the passage according to the pictures.Revision英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointsBig BangA cloud of dust Atmosphere The earthA solid ballwater英語優(yōu)秀課件Unit4-How-Lif

2、e-Began-on-the-Earth-Language-pointswaterPlants in the waterShellfish and fishPlants on land英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointsInsects and amphibiansReptiles Dinosaurs Mammals 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points humans came into being and spread all over the w

3、orld.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points1.No one knows exactly how the earth began, as it happened so long ago.No one knows what he was saying, as it was too hard.仿寫：沒人明白他在說什么，因?yàn)槟翘y理解了。 as在這里表示原因, 意思是“因?yàn)椤?As he was ill, he needed more help. 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth

4、-Language-points2.However, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions.1) begin with=start with：“以開始”.2)to begin with =to start with 可以單獨(dú)使用,表示“首先; 第一; 起初; 最初”.在句中作時(shí)間狀語.e.g. To begin / start with, I couldnt understand him at all. 3）b

5、egin as 起初是，本來是英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points in all directions. =in every direction/directions? 朝四面八方譯：The enemies ran away in all directions. 敵人四處逃竄。拓展： Im terrible with directions: _ a sense of direction: _ 在某人的指導(dǎo)下: _ ones direction 方向感under我是路癡英語優(yōu)秀課件Unit4-How-Life-Began-

6、on-the-Earth-Language-pointsWhat it was to become was uncertain be to do be to do sth. be + doing:_ be + done:_聯(lián)想正在被動(dòng) (1)表示“應(yīng)當(dāng)/必須做某事”，通常用于通知和說明書里。 意思接近于should, ought to, must, have to eg. No one is to leave the building. You are not to smoke in this room. Youaretobebackby10oclock. 3. What it was to

7、become was uncertain until between 4.5and 3.8 billion years ago when the dust settled into a solid globe . 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points (2)表示命運(yùn)，“將來不可避免要發(fā)生的事”?！白⒍ā盩heysaidgoodbye,littleknowingtheywerenevertomeetagain.（3）表示“將”、“計(jì)劃”、“安排”。(意思接近于begoingto)如： Theirdaughteristoge

8、tmarriedsoon. Thestudentsaretomeetattheschoolgatetomorrow. （4）用于“ifweretodo”，表示虛擬語氣。如： Ifitweretoraintomorrow,thesportsmeetingwouldbeputoff.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points 1.Thisfilm_thisSunday. A.isgoingtoshow B.isshowing C.istobeshown D.willhavebeenshow2.The students were t

9、old that they _ at the school gate at 2：00 the following afternoon.A. met B. will meet C. were to meet D. were met3.Insuchdryweather,theflowerswillhavetobewateredifthey_. A.havesurvived B.aretosurvive C.wouldsurvive D.willsurvive 4._he_tomorrow,Iwouldgotomeethimatthestation. A.Were;tocome B.Was;comi

10、ng C.Did;come D.Would;come Exercises:英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points. be to do :You _this to the police.你應(yīng)該報(bào)警They _next month.他們計(jì)劃于下個(gè)月結(jié)婚。2. The professor _a lecture at Wuhan University next weekend.give B. gives C. is to give D. being givenare to reportare to be married英語優(yōu)秀課件

11、Unit4-How-Life-Began-on-the-Earth-Language-pointsWhat it was to become was uncertain until 他昨天直到七點(diǎn)才離開學(xué)校.He didnt leave school until seven oclock. 他們到了中國才能看了長城.They couldnt see the Great Wall until they came to China.It was not until they came to China that they could see the Great Wall.Notuntil直到才It

12、 is/was not until that 強(qiáng)調(diào)句It was not until seven oclock that he left school.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points【巧應(yīng)用】使大家驚奇的是他竟沒有參加會(huì)議。_ _ _ _ _he didnt come to the meeting.答案：What surprised everybody is that【精提取】What it was to become是what引導(dǎo)的主語從句，what在從句中作become的賓語。英語優(yōu)秀課件Unit4-How-L

13、ife-Began-on-the-Earth-Language-points高考真題1（山東卷26）. Before the sales start, I make a list of _my kids will need for the coming season. A. why B. what C. how D. which2（江蘇卷35）. -I prefer staying at home and watching TV all day in every Sundays. -Thats_ I dont agree. You should have a more active life.

14、 A. where B. how C. when D. what考例1 _ was most important to her, she told me, was her family.（山東 2008）A. ItB. ThisC. WhatD. As英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points考例2 _ is known to us all is that the 2008 Olympic Games will take place in Beijing.（福建 2008）A. It B. What C. As D. Whic

15、hwhich 引導(dǎo)主語從句，意思為哪一個(gè)，哪一些，一般后面需要緊跟名詞，做具體說明是什么東西，是有范圍的選擇，而what是沒有范圍。which one you choose is right. 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points1. _（使大家吃驚的是）is that he didnt come to the meeting. What surprised everybody 2. _（他所做的）added to our difficulty. What he did 仿寫: 李老師明天將去北京，直到那時(shí)才能知道誰將代

16、替她給我們上課。_Who will give us lessons in place of Miss Li isnt known until tomorrow when she will go to Beijing.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points4.The earth became so violent that it was not clear whether the solid shape would last or not. 地球開始變得激烈動(dòng)蕩，不知道這個(gè)固體形狀是否會(huì)繼續(xù)下去。n. 固體 (solid,

17、liquid, gas )adj. 固體的,實(shí)心的,無空隙的；結(jié)實(shí)的, solid:英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points2) violent 猛烈的，激烈的 violence n. 暴力3) last v. 持續(xù) 好天氣只持續(xù)了幾天。 The fine weather only lasted for a few days. 友誼長存 Friendship lasts forever.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points5.It exploded l

18、oudly with fire and rock, which were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earths atmosphere. explode v.1). （使某物）炸開，爆炸 2).（指感情）迸發(fā)3). （指人口）突然或迅速增加 explode with /into.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points eg: The firework exploded i

19、n his hand and he was hurt seriously. eg: The children exploded into laughter. eg: The teacher exploded with anger. explosion n. 爆炸（聲） explosive adj.爆炸性的，易爆炸的 勃然大怒 哄堂大笑英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points in time: sooner or later/finally; 遲早;最終 我遲早會(huì)遇見他. Ill see him in time. in tim

20、e (for sth. /to do sth.): not late 及時(shí)；不遲 她會(huì)及時(shí)回來準(zhǔn)備晚餐. She will be back in time to prepare dinner. 你認(rèn)為我們能及時(shí)趕上火車嗎?Do you think we can getthere _the train?in time for英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points 與time相關(guān)的短語: on time 按時(shí);準(zhǔn)時(shí) in no time 立刻,馬上 at times 有時(shí) at a time 每次;依次 once upon a

21、 time 從前 at one time 從前 for the time being 暫時(shí) from time to time 不時(shí)地 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points， I lost heart in English learning，but my teacher often said to me，“Keep on studying hard, and youll succeed_.”AAt a time；in timeBAt a time；on timeCAt one time；in time DAt one t

22、ime；on time2(2009年江西景德鎮(zhèn)模擬)Does he often ask you for help?Oh，no，only_.Aall the time Bat one timeCat a time Dat times英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointscool down 變涼, 冷卻,平息，冷靜曬了一天的太陽之后,他喜歡在海水中涼快一下.After a day in the sun, he liked to _ in the sea.他的話平息了她的怒氣.His words _ her anger.cool

23、ed downcool down6. What is even more important is that as the earth cooled down, water began to appear on its surface. 隨著地球的冷卻, 地球的表面就開始出現(xiàn)了水。英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points appear “出現(xiàn), 似乎”是不及物動(dòng)詞當(dāng)表示 “似乎, 好像”時(shí)是系動(dòng)詞, 該詞無被動(dòng)語態(tài)。 Our teacher appeared on TV this morning.英語優(yōu)秀課件Unit4-Ho

24、w-Life-Began-on-the-Earth-Language-points7.Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. unlike prep. dislike v. likely adj. unlikely adj.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points8.It was not immediately obvious that water was to be

25、 fundamental to the development of life. 水會(huì)對(duì)于生命的發(fā)展起關(guān)鍵作用,這一點(diǎn)在當(dāng)時(shí)并不太明顯.It只起到形式主語的作用, 真正的主語是that water was to be fundamental to the development of life. 如:It is no wonder that he has passed the exam.It is quite necessary for us to learn English well.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-point

26、sallow to do = permit to doharmful adj. harmless harm n./v.be harmful to sb./sth.= do harm to sb. /sth.=do sb/sth harm 對(duì)有害9. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.英語優(yōu)秀課件Unit4-How-Life-Began-

27、on-the-Earth-Language-points過多的二氧化碳對(duì)環(huán)境有害.Too much carbon dioxide is the environment.harmful to does harm to英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points10.This produced a chain reaction, which made it possible for life to develop.chain reaction 連鎖反應(yīng)Make it possible for life to develop. 使生命

28、的發(fā)展成為可能 make it + adj./ n.+. to do sth. make / find / feel / think / consider that 從句英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points組長讓我們可以一起合作.The group leader_老師讓他們?nèi)菀椎孛靼啄莻€(gè)問題.The teacher _.made it possible for us to work together.made it easy for them to understand the question英語優(yōu)秀課件Unit4-H

29、ow-Life-Began-on-the-Earth-Language-points1) multiply v. 乘: 增加,繁殖；7乘以4等于28.4 multiplied by 7 is twenty-eight.我們的功課自上高中以來增多了.Our homework have multiplied since we came to high school.蚊子在夏天繁殖得很快.Mosquitoes multiply rapidly in summer. 11. They multiplied and filled the oceans and seas with oxygen , whi

30、ch encouraged英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points all sorts of =all kinds of 各種各樣的12. which encouraged the later development of early shellfish and all sorts of fish.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points13.Others, called amphibians, were able to live on land as w

31、ell as in the water. 另外一些叫作兩棲動(dòng)物,它們既能在陸地上生活也能在水里生存. as well as 表示“(除.之外)也; 既又”. 如:Im learning French as well as English.我學(xué)英語之外還學(xué)法語.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointsHe grows flowers as well as vegetables.他既種菜也種花.“就遠(yuǎn)原則”：He as well as I _ (like) rock music.likes英語優(yōu)秀課件Unit4-How-Life

32、-Began-on-the-Earth-Language-points14. They produced young generally by laying eggs. Its generally believed that一般認(rèn)為 generally speaking 一般而言，概括來說 1) Its generally believed that girls work harder than boys do. 2) Generally speaking, women cry more easily than men. 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Ea

33、rth-Language-points15.They produced young generally by laying eggs.它們一般是通過孵蛋而繁衍后代的.lie, lie , lay 的區(qū)別如下:動(dòng)詞原形第三人稱單數(shù)過去式過去分詞現(xiàn)在分詞中文釋義 lielies撒謊;謊話 lie lies躺; 位于 laylays放置; 下蛋l(fā)iedliedlyinglaylainlyinglaidlaidlaying英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points16.They laid eggs too and existed on

34、 the earth for more than 140 million years. Exist v. 生存；存在exist on 靠為生 exist by 靠生存 It was impossible for them to _such a small income. exist on英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-pointsThe wild man _hunting wild animal in the e into existence=come into being 開始存在、成立When did this world

35、come into existence?existed by There exist(s) 存在/有.英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points17.These animals were different from all life forms in the past, because they gave birth to young baby animals and produce milk to feed them. give birth to 1) 生（孩子） Shes just given birth to a he

36、althy baby girl. 她剛剛生了個(gè)健康的女嬰。 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points2) 產(chǎn)生 The extra experience gave birth to his latest novel. 這段奇特的經(jīng)歷促成了他的最新的一部小說的誕生。英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points（1）vi. （消息等）傳開，流傳。如：The news spread through the school very quickly.The fire s

37、pread from the factory to the house nearby.18. small clever animals, now with hands and feet, appeared and spread all over the earth. 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points（2）v. “使伸展，延伸，張開”，常與out連用。He spreaded out his arms to welcome us.I spread a new cloth on the table.我在餐桌上鋪上一條新桌布

38、。他張開手臂歡迎我們。英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points19.Thus they have, in their turn, become the most important animals on the planets on the planet.thus adv. 因此；從而 She studied hard, _ .thus she got high marks2) In ones turn 輪到某人It will be _ to be on duty tomorrow.in Sams turn英語優(yōu)秀課件Uni

39、t4-How-Life-Began-on-the-Earth-Language-points20. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 阻止某人做某事 :prevent sb. (from) doing sth. stop sb. (from) doing sth. keep sb. from doing sth. 注意：keep sb. from doing sth.中from不可省略

40、,被動(dòng)語態(tài)中,他們中的from都不可省。英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points1) We must prevent them from making trouble. 2) You should prevent the child from injuring himself. 英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points21.Whether life will continue on the earth for millions Of years to co

41、me will depend on whether this problem can be solved.depend on : 依賴，依靠It / that all depends 那得看情況而定depend on sb. 依靠,相信某人depend on sth. 取決與某物英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points我們都靠你來做決定了Well all _to make a decision.明天是否能開校運(yùn)會(huì)取決與天氣Whether to hold the sports meeting or not will _.depend on youdepend on the weather英語優(yōu)秀課件Unit4-How-Life-Began-on-the-Earth-Language-points單詞拼寫 1. There is too much _(暴力) on TV