英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points

1、Unit 4 How Life Began on the Earth Language points英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointsPlease retell the passage according to the pictures.Revision英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointsBig BangA cloud of dust Atmosphere The earthA solid ballwater英语优秀课件Unit4-How-Lif

2、e-Began-on-the-Earth-Language-pointswaterPlants in the waterShellfish and fishPlants on land英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointsInsects and amphibiansReptiles Dinosaurs Mammals 英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points humans came into being and spread all over the w

3、orld.英语优秀课件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.仿写：没人明白他在说什么，因为那太难理解了。 as在这里表示原因, 意思是“因为” As he was ill, he needed more help. 英语优秀课件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：“以开始”.2)to begin with =to start with 可以单独使用,表示“首先; 第一; 起初; 最初”.在句中作时间状语.e.g. To begin / start with, I couldnt understand him at all. 3）b

5、egin as 起初是，本来是英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points in all directions. =in every direction/directions? 朝四面八方译：The enemies ran away in all directions. 敌人四处逃窜。拓展： Im terrible with directions: _ a sense of direction: _ 在某人的指导下: _ ones direction 方向感under我是路痴英语优秀课件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:_联想正在被动 (1)表示“应当/必须做某事”，通常用于通知和说明书里。 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 . 英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points (2)表示命运，“将来不可避免要发生的事”。“注定”Theysaidgoodbye,littleknowingtheywerenevertomeetagain.（3）表示“将”、“计划”、“安排”。(意思接近于begoingto)如： Theirdaughteristoge

8、tmarriedsoon. Thestudentsaretomeetattheschoolgatetomorrow. （4）用于“ifweretodo”，表示虚拟语气。如： Ifitweretoraintomorrow,thesportsmeetingwouldbeputoff.英语优秀课件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:英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points. be to do :You _this to the police.你应该报警They _next month.他们计划于下个月结婚。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英语优秀课件

11、Unit4-How-Life-Began-on-the-Earth-Language-pointsWhat it was to become was uncertain until 他昨天直到七点才离开学校.He didnt leave school until seven oclock. 他们到了中国才能看了长城.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 强调句It was not until seven oclock that he left school.英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points【巧应用】使大家惊奇的是他竟没有参加会议。_ _ _ _ _he didnt come to the meeting.答案：What surprised everybody is that【精提取】What it was to become是what引导的主语从句，what在从句中作become的宾语。英语优秀课件Unit4-How-L

13、ife-Began-on-the-Earth-Language-points高考真题1（山东卷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（江苏卷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.（山东 2008）A. ItB. ThisC. WhatD. As英语优秀课件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 引导主语从句，意思为哪一个，哪一些，一般后面需要紧跟名词，做具体说明是什么东西，是有范围的选择，而what是没有范围。which one you choose is right. 英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points1. _（使大家吃惊的是）is that he didnt come to the meeting. What surprised everybody 2. _（他所做的）added to our difficulty. What he did 仿写: 李老师明天将去北京，直到那时才能知道谁将代

16、替她给我们上课。_Who will give us lessons in place of Miss Li isnt known until tomorrow when she will go to Beijing.英语优秀课件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. 地球开始变得激烈动荡，不知道这个固体形状是否会继续下去。n. 固体 (solid,

17、liquid, gas )adj. 固体的,实心的,无空隙的；结实的, solid:英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points2) violent 猛烈的，激烈的 violence n. 暴力3) last v. 持续 好天气只持续了几天。 The fine weather only lasted for a few days. 友谊长存 Friendship lasts forever.英语优秀课件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）炸开，爆炸 2).（指感情）迸发3). （指人口）突然或迅速增加 explode with /into.英语优秀课件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（声） explosive adj.爆炸性的，易爆炸的 勃然大怒 哄堂大笑英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points in time: sooner or later/finally; 迟早;最终 我迟早会遇见他. Ill see him in time. in tim

20、e (for sth. /to do sth.): not late 及时；不迟 她会及时回来准备晚餐. She will be back in time to prepare dinner. 你认为我们能及时赶上火车吗?Do you think we can getthere _the train?in time for英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points 与time相关的短语: on time 按时;准时 in no time 立刻,马上 at times 有时 at a time 每次;依次 once upon a

21、 time 从前 at one time 从前 for the time being 暂时 from time to time 不时地 英语优秀课件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年江西景德镇模拟)Does he often ask you for help?Oh，no，only_.Aall the time Bat one timeCat a time Dat times英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointscool down 变凉, 冷却,平息，冷静晒了一天的太阳之后,他喜欢在海水中凉快一下.After a day in the sun, he liked to _ in the sea.他的话平息了她的怒气.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. 随着地球的冷却, 地球的表面就开始出现了水。英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points appear “出现, 似乎”是不及物动词当表示 “似乎, 好像”时是系动词, 该词无被动语态。 Our teacher appeared on TV this morning.英语优秀课件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.英语优秀课件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. 水会对于生命的发展起关键作用,这一点在当时并不太明显.It只起到形式主语的作用, 真正的主语是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.英语优秀课件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 对有害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.英语优秀课件Unit4-How-Life-Began-

27、on-the-Earth-Language-points过多的二氧化碳对环境有害.Too much carbon dioxide is the environment.harmful to does harm to英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points10.This produced a chain reaction, which made it possible for life to develop.chain reaction 连锁反应Make it possible for life to develop. 使生命

28、的发展成为可能 make it + adj./ n.+. to do sth. make / find / feel / think / consider that 从句英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points组长让我们可以一起合作.The group leader_老师让他们容易地明白那个问题.The teacher _.made it possible for us to work together.made it easy for them to understand the question英语优秀课件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.我们的功课自上高中以来增多了.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英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points all sorts of =all kinds of 各种各样的12. which encouraged the later development of early shellfish and all sorts of fish.英语优秀课件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. 另外一些叫作两栖动物,它们既能在陆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.我学英语之外还学法语.英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointsHe grows flowers as well as vegetables.他既种菜也种花.“就远原则”：He as well as I _ (like) rock music.likes英语优秀课件Unit4-How-Life

32、-Began-on-the-Earth-Language-points14. They produced young generally by laying eggs. Its generally believed that一般认为 generally speaking 一般而言，概括来说 1) Its generally believed that girls work harder than boys do. 2) Generally speaking, women cry more easily than men. 英语优秀课件Unit4-How-Life-Began-on-the-Ea

33、rth-Language-points15.They produced young generally by laying eggs.它们一般是通过孵蛋而繁衍后代的.lie, lie , lay 的区别如下:动词原形第三人称单数过去式过去分词现在分词中文释义 lielies撒谎;谎话 lie lies躺; 位于 laylays放置; 下蛋liedliedlyinglaylainlyinglaidlaidlaying英语优秀课件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 靠为生 exist by 靠生存 It was impossible for them to _such a small income. exist on英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-pointsThe wild man _hunting wild animal in the e into existence=come into being 开始存在、成立When did this world

35、come into existence?existed by There exist(s) 存在/有.英语优秀课件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. 她刚刚生了个健康的女婴。 英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points2) 产生 The extra experience gave birth to his latest novel. 这段奇特的经历促成了他的最新的一部小说的诞生。英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points（1）vi. （消息等）传开，流传。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. 英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points（2）v. “使伸展，延伸，张开”，常与out连用。He spreaded out his arms to welcome us.I spread a new cloth on the table.我在餐桌上铺上一条新桌布

38、。他张开手臂欢迎我们。英语优秀课件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；从而 She studied hard, _ .thus she got high marks2) In ones turn 轮到某人It will be _ to be on duty tomorrow.in Sams turn英语优秀课件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、,被动语态中,他们中的from都不可省。英语优秀课件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. 英语优秀课件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 : 依赖，依靠It / that all depends 那得看情况而定depend on sb. 依靠,相信某人depend on sth. 取决与某物英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points我们都靠你来做决定了Well all _to make a decision.明天是否能开校运会取决与天气Whether to hold the sports meeting or not will _.depend on youdepend on the weather英语优秀课件Unit4-How-Life-Began-on-the-Earth-Language-points单词拼写 1. There is too much _(暴力) on TV