高中人教版英語(yǔ)Unit4 Astronomy 新人教版必修3

1、PAGE PAGE 7新課標(biāo)人教版 Unit 4Astronomy：the science of the stars天文學(xué)：恒星科學(xué)核心詞匯1Do you think our education_(制度)needs improving?2The_(氣候)of southern Florida attracts thousands of tourists each winter.3Without practice there would be no_(理論)4The hen was old and it stopped_(下蛋)eggs.5. The idea_(存在)only in the m

2、inds of us young people.6Professor Li has solved the_(難題)and everyone is cheering.7Mars_(萬有引力)is only about 38% of Earths.8Raising your child to tell the difference between right and wrong is one of the f_tasks of parenthood.9用harm的適當(dāng)形式填空(1)Air pollution will get worse and this will be_to people，for

3、 example，it can cause cancer.(2)Rubbish can be changed into_things.(3)Dont_your eyes by reading in the dim light.10Last night we had a discussion，which became more and more_.Finally we reached an agreement that we will never use_whatever happens.(violent)1.system2.climate3.theory4.laying5.exists 6.p

4、uzzle7.gravity8.fundamental9.(1)harmful,(2)harmless(3)harm10.violent；violence高頻短語(yǔ)1_及時(shí)，終于2_ 下蛋3_ 產(chǎn)生；分娩4_ 輪到某人；接著5_ 阻止；制止6_ 擋住(光線)7_ 感到高興；感到振奮8_ 既然9_ 突發(fā)；爆發(fā)10_ 密切注視；當(dāng)心；提防1.in time2.lay eggs3.give birth to4.in ones turn5.prevent.from6.block out7.cheer up8.now that,9.break out10.watch out重點(diǎn)句式1_was uncert

5、ain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.隨后它會(huì)變成什么沒有人知道，直到3845億年前，這團(tuán)塵埃才慢慢地形成一個(gè)固體的球狀物。2The earth became _ it was not clear whether the shape would last or not.地球變得如此猛烈，以至于它的形狀能否持久還不清楚。3This produced a chain reaction，which _.這就產(chǎn)生了一系列的反應(yīng)，使得生命有可能發(fā)展了。4We wat

6、ched，_ on the outside of the spaceship as the earths gravity increased.我們驚奇地看著，隨著地球引力的增加，宇宙飛船的外層燃燒起火。5But when I tried to step forward，I found I was carried _ on the earth and fell over.而當(dāng)我試著向前邁步時(shí)，我發(fā)覺我被送出很遠(yuǎn)，步子的跨度竟是在地球上的兩倍，因而我摔倒了。6“.walking does need a bit of practice _ gravity has changed.”“既然重力改變了，

7、走路也確實(shí)需要練一練了。”1.What it was to become2.so violent that3.made it possible for life to develop4.amazed as fire broke out,5.twice as far as6.now that知識(shí)詳解1.existvi.存在，生存(回歸課本P26)They laid eggs too and existed on the earth for more than 140 million years.它們也生蛋，在地球上生存了一億四千多萬年。歸納拓展(牛津P697)They cant exist on

8、 the money hes earning.他們靠他掙的那點(diǎn)錢無法維持生活。There exists a good way to solve the existing problem in geography.有一個(gè)解決現(xiàn)存地理問題的好辦法。No one knows how this world came into existence.沒有人知道這個(gè)世界是怎樣形成的。例句探源即境活用1完成句子(1)巴基斯坦在戰(zhàn)后就以一個(gè)獨(dú)立的國(guó)家存在了。Pakistan _ _ _ _ _ _country after the war.答案：came into existence as an indepen

9、dent(2)就我所知，他們收入微薄，幾乎無法維持生活。As far as I know，they are paid hardly enough_ _ _.答案：to exist on2.puzzlen謎；難題vt. & vi.(使)迷惑；(使)為難(回歸課本P27)How life began on earth is one of the biggest puzzles that scientists found hard to solve.地球生命如何起源是科學(xué)家們覺得很難解決的最大的難題之一。歸納拓展(牛津P1616)What puzzles me is why he left the

10、country without telling anyone.令我不解的是，他為什么悄悄地離開了這個(gè)國(guó)家。The police are still puzzling about/over how the accident could have happened.警察仍然正在苦思這起事故是怎么發(fā)生的。例句探源Scientists have been trying to solve this puzzle for years.多年來科學(xué)家們一直試圖解開這一謎團(tuán)。(牛津P1616)He looked puzzled so I repeated the question.他好像沒聽懂，于是我又把問題重

11、復(fù)了一遍。2She lost heart since she failed in the exam.She felt_about her future.ApuzzleBpuzzlingCpuzzled Dpuzzles解析：選C。后句句意：她對(duì)她的將來感到迷惑。puzzled adj.(人)迷惑的，迷惘的；puzzling adj.(物)令人迷惑的。即境活用3.pulln. & vt.拉(力)；拖；牽引力(回歸課本P30)As the rocket rose into the air，we were pushed back into our seats because we were tryi

12、ng to escape the pull of the earths gravity.隨著火箭的升空，由于我們?cè)谂昝摰厍虻囊Γ覀儽幌蚝笸圃谧簧?。歸納拓展He pulled the door open and rushed out.他拉開門，沖了出去。(牛津P1604)The police car signalled to us to pull in.警車發(fā)出信號(hào)，要我們駛向路邊?？?。We waved as the train pulled out of the station.火車駛出車站時(shí)我們揮手告別。The doctor told me that I would pull th

13、rough.醫(yī)生告訴我，我會(huì)康復(fù)的。例句探源【高效記憶】3用pull down；pull in；pull out；pull through填空：(1)Houses were_to make way for a new highway.答案：pulled down(2)Cheer up！Take more exercise every day and you will_.答案：pull through即境活用(3)John_behind me and parked.答案：pulled in(4)Be careful when you _of the driveway.答案：pull out4.i

14、n time及時(shí)；終于，總有一天(回歸課本P25)They were in time to produce carbon，nitrogen，water vapour and other gases，which were to make the earths atmosphere.最終產(chǎn)生了碳、氮?dú)?、水蒸氣和其他多種氣體，從而形成了地球的大氣層。歸納拓展The kids will be leaving home in no time.孩子們很快就要離開家了。(朗文P2162)Will you be back in time for dinner?你會(huì)及時(shí)趕回來吃晚飯嗎？(朗文P2162)I sh

15、ould be back in time to watch the show.我應(yīng)該及時(shí)趕回來看那場(chǎng)演出。The company fired him for not coming to work on time.那家公司因他不按時(shí)上班而解雇了他。例句探源4Will you be home_to see the children before they go to bed?Aon timeBin timeCat a time Dat one time解析：選B。句意：你會(huì)在孩子們上床睡覺之前回來看他們嗎？in time意為“及時(shí)”，符合題意。on time按時(shí)；at a time每次；at on

16、e time曾經(jīng)。即境活用5_， I lost heart in English learning，but my teacher often said to me，“Keep on studying hard，and youll succeed_.”AAt a time；in time BAt a time；on timeCAt one time；in time DAt one time；on time解析：選C?？疾橛蓆ime 構(gòu)成的固定搭配的用法。句意：曾經(jīng)，我對(duì)英語(yǔ)學(xué)習(xí)失去信心，但老師常對(duì)我說：“堅(jiān)持不懈的努力，最終會(huì)鑄就你的成功?！盿t a time“每次”；at one time“曾

17、經(jīng)，一度”相當(dāng)于once；in time“及時(shí)，遲早”，當(dāng)“遲早”講時(shí)相當(dāng)于sooner or later；on time“按時(shí)，準(zhǔn)時(shí)”。由句意知應(yīng)選C。6(2010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解析：選D。all the time一直；at one time曾經(jīng)；at a time一次；at times有時(shí)。7I am afraid I cant return the book to you before Friday._.AD

18、ont be afraid BBe carefulCNot at all DTake your time解析：選D。句意：恐怕我不能在星期五之前把這本書還給你。慢慢來，別著急。Dont be afraid別害怕；Be careful小心，當(dāng)心；Not at all一點(diǎn)也不；Take your time即to use as much time as you need without hurrying“不用急，慢慢來”。根據(jù)題意只有D項(xiàng)符合句意。5.in ones turn 輪到某人；接著(回歸課本P26)Thus they have，in their turn, become the most

19、important animals on the planet.于是，他們接著成為了這個(gè)行星上最重要的動(dòng)物 。歸納拓展When it is in my turn，I am too excited to speak.當(dāng)輪到我時(shí)，我激動(dòng)得都說不出話來了。The customer praised the manager，who in turn praised his staff.顧客表?yè)P(yáng)了經(jīng)理，經(jīng)理轉(zhuǎn)而表?yè)P(yáng)了員工。All theories are derived from practice and in turn serve practice.所有的理論都來源于實(shí)踐，并反過來為實(shí)踐服務(wù)。Now it

20、 is your turn to look after the children.現(xiàn)在輪到你照看孩子了。例句探源8People try to avoid public transportation delays by using their own cars，and this_creates further problems.Ain short Bin caseCin doubt Din turn解析：選D。in turn 在該題中的意思為“反之；反過來”。即境活用6.prevent.from.防止某事發(fā)生(回歸課本P26)They are putting too much carbon di

21、oxide into the atmosphere，which prevents heat from escaping from the earth into space.他們把過多的二氧化碳釋放到大氣層中，這使得地球上的熱不能釋放到太空中去。歸納拓展(朗文P1612)Guards stood at the doors to prevent anyone from leaving.守衛(wèi)站在門口阻止任何人離開。Once he has made up his mind，no one can prevent him from carrying out the plan.一旦他下定決心，誰也阻止不了他

22、執(zhí)行這個(gè)計(jì)劃。His advice kept me from making a serious mistake.他的忠告使我免于犯一個(gè)嚴(yán)重的錯(cuò)誤。例句探源9All possible means _.However，nothing can_him dying of lung cancer.Ahas tried；stopBhave tried；keepChas been tried；preventDhave been tried；stop解析：選D。前一句的主語(yǔ)是All possible means，means用all 修飾，看作是復(fù)數(shù)，后面的謂語(yǔ)動(dòng)詞要用復(fù)數(shù)形式并且用被動(dòng)語(yǔ)態(tài)；后一句是“阻止某人

23、做某事”，him 后省略了from，故選D。即境活用7.cheer up(使)高興；使振奮；感到振奮(回歸課本P31)I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.我立刻感到很高興，由于失重我在太空艙里飄來飄去，我望著(身后的)地球越來越小，而(前方的)月球越來越大。歸納拓展(牛津P327)Give Mary a call; she needs cheering up.給瑪麗

24、打個(gè)電話，她需要人安慰。The good news cheered (up) everybody who heard it.喜訊使每一個(gè)聽到的人感到高興。The crowd cheered wildly at the sight of Liu Xiang.看到劉翔后，人群熱烈歡呼起來。They do this in order to encourage crowds to cheer their sports teams.她們這樣做是為了鼓勵(lì)人們?yōu)樗齻兊那蜿?duì)加油。例句探源10Im thinking of the test tomorrow.Im afraid I cant pass this

25、time._！Im sure youll make it.AGo aheadBGood luckCNo problem DCheer up解析：選D。句意：我正在考慮明天考試的問題，恐怕這次我會(huì)不及格。振作起來！我相信你會(huì)通過的。根據(jù)上下文只有Cheer up “振作起來”符合題意，而Go ahead繼續(xù)；Good luck好運(yùn)氣；No problem沒問題，均不符合題意。句型梳理1【教材原句】“.walking does need a bit of practice now_that gravity has changed.”(P31)“既然重力改變了，走路也確實(shí)需要練一練了?！薄揪浞ǚ治觥?/p>

26、now that由于；既然，引導(dǎo)原因狀語(yǔ)從句，有時(shí)that 可以省略。Now that you have finished your work，youd better have a rest.既然你的工作已經(jīng)做完了，最好休息一下吧。Now (that) the weather is fine，lets go for a ride.既然天氣那么好，我們開車去兜風(fēng)吧。Now you have grown up，you can make up your mind by yourself.你已長(zhǎng)大了，可以自己做決定了。易混辨析because，since，as，for，now that(1)becaus

27、e語(yǔ)氣最強(qiáng)，一般指事情發(fā)生的直接原因，回答提問時(shí)，一般放在主句之后。(2)since語(yǔ)氣較弱，指雙方都明確的原因或眾所周知的原因，側(cè)重主句，從句表示顯然的或已知的理由。(3)as語(yǔ)氣比because弱，所引導(dǎo)的從句表示的是顯而易見的原因和理由，從句一般放在主句前。(4)for是并列連詞，表示推斷的原因，或?qū)η耙环志溲a(bǔ)充說明理由。for表示這一用法時(shí)需放在兩句之間。He was absent from the meeting because he was ill yesterday.Since you cant answer the question，Ill ask someone else.A

28、s there was no answer，we wrote him again.It must have rained last night，for the ground is wet.即境活用11_youve got a chance，you might as well make full use of it.ANow thatBAfterCAlthough DAs soon as解析：選A。句意：既然你得到了一次機(jī)會(huì)，不妨充分利用它。12Did you return Freds call?I didnt need to_Ill see him tomorrow.Athough BunlessCwhen Dbecause解析：選D。根據(jù)語(yǔ)意看，后面的句子表示“沒有必要的原因”，所以用because。2【教材原句】But when I tried to step forward，I found I was carried twice as far as on the earth a