B3U4-astronomythe-science-of-the-stars-英語一輪復(fù)習(xí)之公開課課件

1、Book3Unit 4Astronomy: the science of the stars課文回顧No one knows exactly_1_the earth began. According to a widely accepted theory, the earth began with a “Big Bang”, _2_exploded loudly and produced water vapor and many gases, _3_ (make) the earths atmosphere. As the earth cooled down, water appeared a

2、nd stayed_4_ the surface. It was the presence of water_5_ allowed the earth to dissolve harmful gases and acids into the oceans and seas, which made_6_ possible for life to develop. First, the appearance of small plants encouraged the development of early shellfish and all sorts of fish.howit making

3、onthatitNext, green plants began to grow on land, _7_were followed by land animals. So reptilesappeared for the first time. Later, dinosaursdeveloped. _8_, they suddenlydisappeared. After that, mammals came into being.Finally, humans appeared and spread all over theearth. However, they are putting t

4、oo much carbondioxide into the atmosphere, making the earth toohot _9_ (live) on. So whether life willcontinue on the earth will dependon_10_this problem can be solved.theyHowever to livewhetherSummary:The passage is about a theory about the formation of the universe. After a big bang, the earth for

5、med, where water appeared and plants and animals developed. At last, humans arrived and they had a great impact on the earth.按Esc鍵退出返回目錄1._ n.天文學(xué)_ n.宇航員_n.天文學(xué)家_ n.宗教;宗教信仰_ adj.宗教的;虔誠(chéng)的_ n.學(xué)說;理論_adj.理論的_ adj.猛烈的;激烈的_ adv.強(qiáng)烈地_ n.暴力5._adj.有害的_ n.傷害;危害_ vt.傷害;危害_ adj.無害的詞匯過關(guān)astronomyastronautastronomerre

6、ligionreligioustheorytheoreticalviolentviolentlyviolenceharmfulharmharmharmless vi.存在;生存 n.存在;生活(方式)7. n.謎;難題 vt.& vi.(使)迷惑;(使)為難8. n.生物學(xué) n.生物學(xué)家 n.物理學(xué)家 n.物理學(xué) adj.物理的;物理學(xué)的10. vi.& vt.碰撞;墜落 vi.& vt.(使)浮動(dòng);(使)漂浮n.漂浮_ vi.& vt.給稱重 n. 稱分量 n.重量，分量 adj.失重的 adv.失重地 n.失重existexistencepuzzlepuzzlebiologybiologi

7、stphysicistphysicsphysicalcrashfloatfloatweighweightweightlessweightlesslyweightlessness按Esc鍵退出返回目錄 及時(shí);終于2. 下蛋3. 產(chǎn)生;分娩4. 輪到某人;接著5.prevent.from 6.block out 7.cheer up 8.now that 9.break out 10.watch out 短語回顧in timelay eggsgive birth toin ones turn阻止;制止擋住(光線)感到高興;感到振奮既然突然發(fā)生;爆發(fā)密切注意;當(dāng)心7按Esc鍵退出返回目錄補(bǔ)充短語：_

8、以開始_朝四面八方_用裝滿_第一次_依靠；依賴_有機(jī)會(huì)做某事_熟悉；掌握begin within all directionsfillwithfor the first timedepend onhave a chance to do sth.get the hang of be full of/be filled with_vi.存在;生存 _存在于中 _作為而存活 _n.存在 _存在；產(chǎn)生 _ 靠為生詞匯拓展existexist inexist as.existencecome into existenceexist on.現(xiàn)在，人們不相信有鬼了。 People dont believe

9、the _ of ghost now.2. 劇中的變臉技術(shù)僅在中國(guó)存在。 The technology for performing Bianlian in Chuan opera only _ in China.3. 巴基斯坦在戰(zhàn)后成為獨(dú)立的國(guó)家。 Pakistan _ as an independent country after the war.existenceexists incame into existence2.break out vi.(戰(zhàn)爭(zhēng)、火災(zāi)等)突然發(fā)生;爆發(fā)用法拓展break away frombreak downbreak inbreak intobreak off

10、break throughbreak upA big explosion _ in an airport in Russia on January 25, 2011.He was late for work this morning, for his car _.Some robbers _ his shop and took away many valuable jewels.The negotiation between them _ without any result.What will happen to the children if Tom and Mary _?broke ou

11、tbroke downbroke intobroke offbroke up3.now that 既然;由于用法拓展常用的引導(dǎo)原因狀語從句的連詞有:because, since, as, for, now that, in that, seeing that, considering that等。_ you are grown-up, you must stop this childish behaviour.He was absent from the meeting _ he was ill yesterday.Wear strong shoes _ we shall do a lot o

12、f walking.It must have rained last night, _ the ground is wet.Now that/Sincebecauseasfor4.in time 及時(shí);遲早;總有一天用法拓展同時(shí)；但是；然而立刻；馬上一直;始終;老是準(zhǔn)時(shí);按時(shí)有時(shí)，偶爾，不時(shí)一次，每次有個(gè)時(shí)期；曾經(jīng)，一度隨時(shí)，無論何時(shí)決不，在任何時(shí)候都不at the same timein no timeall the timeon timeat timesat a timeat one timeat any timeat no time不時(shí)，偶爾提前from time to timeahea

13、d of time 與time有關(guān)的句式：Its time to do sth./Its time that sb. did sth.It/This is the first/second time that sb. have/has done sth.Every/each/the next/the last time+從句到了某人做某事的時(shí)間這是某人第次做某事了每次/下次/上次時(shí)The soldiers came _ to save her life from the bif fire.I was always sleepy _.Dont recite all together; one _

14、.I believe we can finish it _._ will smoking be permitted here.The old man comes to police for help _.in timeat one timeat a timeon time/ahead of timeAt no timeat times5.prevent sb. (from) doing sth. 阻止某人做某事同義短語: stop sb.(from)doing sth. keep sb.from doing注意:被動(dòng)語態(tài)中,此三個(gè)短語的from均不可省略。cant prevent him (f

15、rom) enjoying lifeprevent the plan (from) being carried outbe prevented from being carried out by anyone.1)他的傷殘阻止不了他享受人生的樂趣。Hisinjures_.2)誰也不能阻止這個(gè)計(jì)劃的執(zhí)行。No one can _.The plan cant _6.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 lielieslie

16、dliedlying撒謊;謊話 lie lieslaylainlying躺; 位于 laylayslaidlaidlaying放置; 下蛋1. This produced a chain reaction, which made it possible for life to develop.在“make+it+賓語補(bǔ)足語+真正賓語(賓語從句或動(dòng)詞不定式等)”結(jié)構(gòu)中,賓語補(bǔ)足語可以由形容詞、名詞、分詞等充當(dāng)。用法拓展常用于此結(jié)構(gòu)的動(dòng)詞還有think, feel, find, consider, take等。句型feel ( think , find, make) it + adj. for s

17、b to do sth.句型積累按Esc鍵退出返回目錄模仿造句:1. 我認(rèn)為對(duì)于我來說,解決這道數(shù)學(xué)題很難.2. 我發(fā)現(xiàn)讓他在完成這項(xiàng)工作是不可能的3. 我們認(rèn)為與他爭(zhēng)論毫無意義。 I think it difficult for me to solve this math problem.I find it impossible for him to finish the work.We consider it no sense to argue with him. 2. But when I tried to step forward, I found I was carried twic

18、e as far as on the earth and fell over. 但當(dāng)我試著向前邁步的時(shí)候，我發(fā)覺我被送出去很遠(yuǎn)，而且摔倒了，步子的跨度竟是在地球上的兩倍。倍數(shù)的表達(dá)法：用times表倍數(shù)，通常用于三倍以上，兩倍常用twice。(1)A is three times the size (height, length)of B(2)A is three times as big (high, long) as B(3)A is three times bigger (higher, longer)than B按Esc鍵退出返回目錄模仿造句:我的房子是我父母的兩倍大。新機(jī)器的運(yùn)轉(zhuǎn)速度比舊的要快一倍My house is twice as large as my parents. My house is twice larger than my parents.My house is twice the size of my parents.The new machines will work twice as fast as old ones.The new machines wil