必修3 Unit 4

1、Unit 4 Astronomy: the science of the stars 【誦讀【誦讀積累積累】 你班就你班就“是否應(yīng)該花費(fèi)巨大的人力、物力和財(cái)力進(jìn)行太空是否應(yīng)該花費(fèi)巨大的人力、物力和財(cái)力進(jìn)行太空 探索探索”進(jìn)行了討論。進(jìn)行了討論。 1. 有些人認(rèn)為太空探索完全是浪費(fèi)時(shí)間和金錢。理由是收有些人認(rèn)為太空探索完全是浪費(fèi)時(shí)間和金錢。理由是收 效甚微、花費(fèi)巨大。效甚微、花費(fèi)巨大。 2. 但大多數(shù)同學(xué)認(rèn)為進(jìn)行太空探索利大于弊但大多數(shù)同學(xué)認(rèn)為進(jìn)行太空探索利大于弊, 許多新產(chǎn)品許多新產(chǎn)品, 如氣象、通訊衛(wèi)星都直接得益于太空研究如氣象、通訊衛(wèi)星都直接得益于太空研究, 使全球受益匪淺。使全球受益匪淺

2、。 3. 你的觀點(diǎn)你的觀點(diǎn) Do We Need Space Exploration Man has been fascinated by outer space for thousands of years. It has been over forty years since mans first landing on the moon. Now, some people believe that space exploration is a waste of time and money. They point out the fact that it cost billions of

3、dollars to carry on the space research, but a little information was brought back. However, every coin has two sides. There are still a majority of other people who believe that space exploration has more advantages. And I agree with those people. Many new products, such as weather and communication

4、 satellites, are also products of space programs, and they have benefited people all over the world. And whats more, scientific knowledge about outer space has been acquired by mankind. We believed that it will bring more benefits in the future, which we cannot even imagine now. Space exploration is

5、 a challenge to human beings. Thats why several nations try hard to carry out space exploration continuously. 【嘗試運(yùn)用【嘗試運(yùn)用】 詞匯翻譯詞匯翻譯 使著迷使著迷 _ 太空探索太空探索 _ 時(shí)間和金錢的浪費(fèi)時(shí)間和金錢的浪費(fèi) _ 指出指出 _ 實(shí)施太空研究實(shí)施太空研究 _ 大多數(shù)的大多數(shù)的 _ 同意同意 _ 執(zhí)行執(zhí)行, 實(shí)行實(shí)行 _ fascinate space exploration a waste of time and money point out carry on the

6、space research a majority of agree with carry out 句式仿寫句式仿寫 她就是想引人注意才穿得那么稀奇古怪的。她就是想引人注意才穿得那么稀奇古怪的。(表語從句表語從句) She just wants to be noticed; _ _. 盡管她個(gè)子矮盡管她個(gè)子矮, 卻是個(gè)出色的籃球運(yùn)動(dòng)員。卻是個(gè)出色的籃球運(yùn)動(dòng)員。(同位語從句同位語從句) Despite _, she is an excellent basketball player. thats why she dresses so strangely the fact that she is

7、short . 單詞盤點(diǎn)單詞盤點(diǎn) 核心速記核心速記 1. _(n. ) 系統(tǒng)；體系；制度系統(tǒng)；體系；制度 2. _(n. ) 學(xué)說；理論學(xué)說；理論 3. _(n. ) 大氣層；氣氛大氣層；氣氛 4. _(adv. ) 因此；于是因此；于是 5. _(n. 生存生存_ (n. ) 存在存在 11. _ (vt. (使使)為難為難 (n. ) 謎謎；難題難題 _ (adj. )迷惑不解的迷惑不解的 violentviolenceviolently unlikelike dislike harmfulharm existexistence puzzle puzzled . 短語互譯短語互譯 1. 及

8、時(shí)；終于及時(shí)；終于 _ 2. 輪到某人；接著輪到某人；接著 _ 3. 阻止；制止阻止；制止 _ 4. 感到高興；感到振奮感到高興；感到振奮 _ 5. 突發(fā)；爆發(fā)突發(fā)；爆發(fā) _ in time in ones turn prevent. . . from cheer up break out 6. 密切注意；當(dāng)心；提防密切注意；當(dāng)心；提防 _ 7. lay eggs _ 8. give birth to _ 9. now that _ 10. block out _ watch out for 下蛋下蛋 產(chǎn)生；分娩產(chǎn)生；分娩 既然既然 擋住擋住(光線光線) . 句型透視句型透視 1. “so.

9、. . that”句型句型 The earth _(變得如此猛烈以至于變得如此猛烈以至于)it was not clear whether the shape would last or not. 2. “make it possible to do sth. ”結(jié)構(gòu)結(jié)構(gòu) This produced a chain reaction, which _ _(使生命的生長(zhǎng)發(fā)育成為一種可能使生命的生長(zhǎng)發(fā)育成為一種可能). became so violent that made it possible for life to develop 3. “倍數(shù)倍數(shù)+as+adj. /adv. +as”句型句

10、型 But when I tried to step forward, I found I was carried _ _(是地球上的兩倍遠(yuǎn)是地球上的兩倍遠(yuǎn))and fell over. 4. now that引導(dǎo)的原因狀語從句引導(dǎo)的原因狀語從句 Walking does need a bit of practice _ _(既然地球引力已發(fā)生了變化既然地球引力已發(fā)生了變化). twice as far as on the earth now that gravity has changed 1. 選用框中詞匯的適當(dāng)形式完成句子選用框中詞匯的適當(dāng)形式完成句子 watch out, system

11、, pull, atmosphere, puzzle (1)A number of gases form the _. (2)What _ me most is why they dont show up. (3)He spent the whole afternoon _ weeds in the garden. (4)When you are crossing the street, please _ for the cars. (5)What are the differences between the American and British _ of the government?

12、 atmosphere puzzles pulling watch out systems 2. 選用句型透視中的句式仿寫句子選用句型透視中的句式仿寫句子 (1)男孩子們是如此優(yōu)秀男孩子們是如此優(yōu)秀, 以至于所有的老師都愛他們。以至于所有的老師都愛他們。 Boys are so good that all teachers love them. (2)他們的到來使我們按時(shí)完成工作成為可能。他們的到來使我們按時(shí)完成工作成為可能。 Their coming makes it possible for us to finish the work on time. (3)到的學(xué)生是我們預(yù)計(jì)的五倍。到的

13、學(xué)生是我們預(yù)計(jì)的五倍。 There are five times as many students as we expected. (4)既然你已經(jīng)完成了家庭作業(yè)既然你已經(jīng)完成了家庭作業(yè), 你就可以打籃球了。你就可以打籃球了。 Now that you have finished your homework, you can play basketball. . 語篇完形語篇完形 After the “Big Bang”, the earth was just a cloud of dust. It 1. _ loudly with fire and rock, which were 2. _

14、 to produce the water vapour, carbon and other gases. Many millions of years later, the first small plants began to 3. _ on the surface of the water. They multiplied and filled the oceans and seas with 4. _. Next, green plants began to grow on land. When the plants grew into forests, reptiles appear

15、ed for the first time. They produced young generally by 5. _ eggs. When dinosaurs disappeared, mammals became more exploded in time appear oxygen laying important. Now small clever animals with hands and feet appeared and 6. _ all over the earth. As time went by they covered the earth and they are p

16、utting too much carbon dioxide into the 7. _, which 8. _ heat 9. _ escaping from the earth into space. Whether life will continue on the earth for millions of years to come will 10. _ whether this problem can be solved. spread atmosphereprevents from depend on 核核 心心 考考 點(diǎn)點(diǎn) in time3年年1考考 prevent. . .

17、from3年年1考考 make+it+adj. /n. +to do sth.3年年3考考 “倍數(shù)倍數(shù)+as+adj. /adv. +as”句型句型3年年2考考 This is unlike volcanic activity above the sea. There were something like 500 people in the audience. _ _ _, it came without wrap. 和別的禮物不同的是和別的禮物不同的是, 它沒有包裝。它沒有包裝。 _ _ _ _ _ _; hes usually on time. 他不是會(huì)遲到的那種人他不是會(huì)遲到的那種人;

18、 他通常很準(zhǔn)時(shí)。他通常很準(zhǔn)時(shí)。 Unlike other gifts/presents Its unlike him to be late 1. unlike prep. 不同；不像不同；不像 adj. 不同的；不相似的不同的；不相似的 【想一想【想一想】高考中經(jīng)常把高考中經(jīng)常把unlike與與dislike放在一起考查放在一起考查, 在學(xué)在學(xué) 習(xí)中經(jīng)常會(huì)把兩者混淆。動(dòng)腦想一想習(xí)中經(jīng)常會(huì)把兩者混淆。動(dòng)腦想一想, 兩者有何區(qū)別？?jī)烧哂泻螀^(qū)別？ 【參考答案【參考答案】 unlike可以用作介詞可以用作介詞, 意為意為“與與不同不同, 不像不像”；而；而dislike則則 為動(dòng)詞為動(dòng)詞, 意為意為“

19、不喜歡不喜歡”, 通常用作及物動(dòng)詞。例如：通常用作及物動(dòng)詞。例如：I dislike living in a large city. 我討厭住在大城市。我討厭住在大城市。 something like 幾分像幾分像 Its like/unlike sb. to do sth. 做某事實(shí)在像做某事實(shí)在像/不像某人不像某人 dislike vt. 不喜歡不喜歡, 討厭討厭 Man cannot exist without air. =live Energy can _ _ a variety of modes. 能量能以各種形式存在。能量能以各種形式存在。 _ _ many sources of

20、energy both potential and kinetic. 存在著許多勢(shì)能和動(dòng)能的能源。存在著許多勢(shì)能和動(dòng)能的能源。 When did the world _ _ _? 世界是什么時(shí)候產(chǎn)生的世界是什么時(shí)候產(chǎn)生的? exist in There exist come into existence 2. exist vi. 存在；生存存在；生存 (1)exist on (live on) sth. 靠某物生存靠某物生存 exist in 存在于存在于之中之中 exist as 作為作為而存在而存在, 以以形態(tài)存在形態(tài)存在 There exist(s). . . 有有/存在存在 n. ex

21、istence come into existence 產(chǎn)生；存在產(chǎn)生；存在 Their reason for doing it is still a puzzle to me. (2012江西高考江西高考)But his curiosity was difficult to control and this new computer really puzzled him. Im _ _ _ as to what to do next. 對(duì)于下一步該做什么我不知道。對(duì)于下一步該做什么我不知道。 I saw him _ _ a math problem. 我看見他正在苦苦思考一道數(shù)學(xué)題。我看見他

22、正在苦苦思考一道數(shù)學(xué)題。 in a puzzle puzzle over 3. puzzle n. 謎；難題謎；難題 vt. (成功地)完成 pull/draw/drag pull 一般用法，指各種情況的“拉”，但有時(shí)強(qiáng)調(diào)一 時(shí)或突然拉的動(dòng)作。 I pulled the handle and the door opened. draw 指平穩(wěn)、較輕地拉。 After some time, the fisherman began to draw the net. drag 往往指用大力氣拖拉笨重物體，有“拖拉”的 意思。 He dragged a heavy box upstairs alone

23、. 4、pull n&v. C考查動(dòng)詞短語辨析。 語義是：班車駛進(jìn) 車站，乘客一個(gè)個(gè)地下來了。drive away開走； push in 是不存在的短語；rush in 沖進(jìn)，不合題意， 所以答案是C。 單項(xiàng)填空 ()(1) The bus _ the bus station and the passengers got off one after another. A. drove away B. pushed in C. pulled in D. rushed in 4、pull n&v. D考查動(dòng)詞短語辨析。 語義是：勇士匆 忙脫下衣服跳進(jìn)河里救那落水兒童。pull on匆忙穿 上；pu

24、t off 推遲；take off脫下，在語境中不是最佳 答案；pull off匆忙脫下，所以答案是D。 ()(2) The brave man _ his clothes and jumped into the river to save the drowning boy. A. pulled on B. put off C. took off D. pulled off 4、pull n&v. 5. in time 及時(shí)；終于及時(shí)；終于 He might get here in time, but I cant be sure. If you keep on, you will succe

25、ed in time. 【拓展【拓展】完成下列短語完成下列短語 _ time 準(zhǔn)時(shí)準(zhǔn)時(shí) _ a time 每次每次, 逐一逐一 _ time to time 有時(shí)有時(shí), 偶爾偶爾 _ no time 立刻；馬上立刻；馬上 time and time _ 一次又一次；一再一次又一次；一再 on at from in again 【高考鏈接【高考鏈接】 (2012江蘇高考江蘇高考)Thank God, youre safe! I stepped back, just _ to avoid the racing car. A. in time B. in case C. in need D. in

26、vain 【解析【解析】選選A?？疾榻樵~短語。句意：?？疾榻樵~短語。句意：謝天謝地謝天謝地, 你安然你安然 無恙！無恙！我退回去了我退回去了, 恰好及時(shí)避開了飛馳的汽車。恰好及時(shí)避開了飛馳的汽車。A項(xiàng)表項(xiàng)表 示示“及時(shí)及時(shí)”, 符合題意。符合題意。B項(xiàng)表示項(xiàng)表示“以防萬一以防萬一”；C項(xiàng)表示項(xiàng)表示 “需要需要”；D項(xiàng)表示項(xiàng)表示“徒勞地徒勞地”。 Guards stood at the doors to prevent anyone from leaving. His advice kept me from making a serious mistake. Once he has made u

27、p his mind, no one can _ _ _ _ _ the plan. 一旦他下定決心一旦他下定決心, 誰也阻止不了他執(zhí)行這個(gè)計(jì)劃。誰也阻止不了他執(zhí)行這個(gè)計(jì)劃。 prevent him from carrying out 6. prevent. . . from 阻止；制止阻止；制止 prevent/stop/keep/ban. . . from doing sth. 阻止阻止做某事做某事 protect. . . from 保護(hù)保護(hù)不受不受侵襲；擋??；防御侵襲；擋??；防御 keep. . . doing sth. 使使一直做某事一直做某事 【想一想【想一想】 prevent/s

28、top/keep. . . from doing sth. 結(jié)構(gòu)中結(jié)構(gòu)中, from 可以省略嗎？可以省略嗎？ 【參考答案【參考答案】 (1)在主動(dòng)語態(tài)中在主動(dòng)語態(tài)中, stop和和prevent的搭配中可省去的搭配中可省去from；而；而 keep . . . from doing sth. 中的中的from不可省略。不可省略。 (2)在被動(dòng)語態(tài)里在被動(dòng)語態(tài)里, 這三個(gè)搭配中的這三個(gè)搭配中的from均不可省略。均不可省略。 單項(xiàng)填空 ()(1) We must take firm and efficient measures to prevent pollution _our life ev

29、en better. A. to make B. making C. make D. against making 6、prevent v. A考查非謂語動(dòng)詞的使用。本題的語義是： 為了使我們的生活更加美好，我們必須采取果斷而 卓有成效的措施阻止污染。根據(jù)語境非謂語動(dòng)詞在 本句是目的狀語，所以答案是A。本題極容易造成 學(xué)生們的思維定勢(shì)而誤選B。 6、prevent v. ()(2) Well spare no effort to prevent the river _. A. from polluting B. polluting C. being polluted D. polluted 6

30、、prevent v. C考查非謂語動(dòng)詞的使用。本題的語義是： 我們將不遺余力地阻止河流污染。根據(jù)語境河流與 污染形成了被動(dòng)關(guān)系，所以答案是C。 (2011湖北高考湖北高考)Feeling blue about the world? Cheer up. The audience stood up to cheer on their team, the Vancouver Canucks. The news _ _ _. 這消息使他高興起來。這消息使他高興起來。 cheered him up 7. cheer up感到高興；感到振奮感到高興；感到振奮 cheer sb. up 使某人振作起來使某

31、人振作起來 cheer sb. on (比賽中比賽中)以喝彩聲鼓勵(lì)某人；為某人加油以喝彩聲鼓勵(lì)某人；為某人加油 Cheers! 口語口語(用于祝酒用于祝酒)干杯！干杯！ 8. now that既然既然 Now that you have finished your work, youd better have a rest. Now (that) the weather is fine, lets go for a ride. _ _ _ _ _, you can make up your mind by yourself. 既然你已經(jīng)長(zhǎng)大了既然你已經(jīng)長(zhǎng)大了, 你可以自己做決定了。你可以自己做

32、決定了。 Now(that) you have grown up 【點(diǎn)津【點(diǎn)津】 now that相當(dāng)于相當(dāng)于since, 是連詞詞組是連詞詞組, 用來引導(dǎo)原因狀用來引導(dǎo)原因狀 語從句語從句, 口語中經(jīng)常省略口語中經(jīng)常省略that, 只用只用now, 這時(shí)這時(shí)now已經(jīng)失去了已經(jīng)失去了 “現(xiàn)在現(xiàn)在”的含義。的含義。 【想一想【想一想】表示原因的連詞表示原因的連詞(詞組詞組)還有哪些？試列舉還有哪些？試列舉, 并說出并說出 它們的區(qū)別。它們的區(qū)別。 【參考答案【參考答案】 表示原因的連詞表示原因的連詞(詞組詞組)小結(jié)小結(jié) (1)可引導(dǎo)原因狀語從句的從屬連詞可引導(dǎo)原因狀語從句的從屬連詞(詞組詞組)

33、：because, as, since, when, now that, in that；并列連詞：；并列連詞：for。 (2)because語氣最強(qiáng)語氣最強(qiáng), 一般指事情發(fā)生的直接原因一般指事情發(fā)生的直接原因, 回答提問回答提問 時(shí)時(shí), 一般放在主句之后。一般放在主句之后。 as語氣比語氣比because弱弱, 所引導(dǎo)的從句表示的是顯而易見的原所引導(dǎo)的從句表示的是顯而易見的原 因和理由因和理由, 從句一般放在主句前。從句一般放在主句前。 since語氣較弱語氣較弱, 指雙方都明確的原因或眾所周知的原因指雙方都明確的原因或眾所周知的原因, 側(cè)側(cè) 重主句重主句, 從句表示顯然的或已知的理由。從句

34、表示顯然的或已知的理由。 when意為意為“既然既然, 考慮到考慮到”, now that意為意為“既然既然”(相當(dāng)于相當(dāng)于 since), in that意為意為“因?yàn)橐驗(yàn)? 由于由于”。 for是并列連詞是并列連詞, 表示推斷的原因表示推斷的原因, 或?qū)η耙环志溲a(bǔ)充說明理或?qū)η耙环志溲a(bǔ)充說明理 由。由。for表示這一用法時(shí)需放在兩句之間。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. 昨天他沒參加會(huì)議是因?yàn)樗×?。昨天他沒參加會(huì)議是因?yàn)樗×恕?As there was no answ

35、er, we wrote to him again. 鑒于他沒有回復(fù)鑒于他沒有回復(fù), 我們又給他寫了封信。我們又給他寫了封信。 Since you cant answer the question, Ill ask someone else. 既然你回答不出這個(gè)問題既然你回答不出這個(gè)問題, 我就問別人了。我就問別人了。 It must have rained last night, for the ground is wet. 昨晚肯定下雨了昨晚肯定下雨了, 因?yàn)榈孛媸菨竦摹Ｒ驗(yàn)榈孛媸菨竦摹?9. break out突發(fā)；爆發(fā)突發(fā)；爆發(fā) Should another world war bre

36、ak out, what would become of human beings? The thought made him break out in a cold sweat. 【拓展【拓展】補(bǔ)全下列補(bǔ)全下列break短語短語 break _ _ 脫離脫離(黨派黨派)；擺脫；擺脫(控制控制) break _ 毀掉；壞掉；毀掉；壞掉；(計(jì)劃計(jì)劃/談判談判)失敗失敗 break _ 打碎；拆散；打碎；拆散；(會(huì)議會(huì)議)結(jié)束；分裂結(jié)束；分裂(解體解體) break _ (使使)停止；中斷；折斷停止；中斷；折斷 break _ 強(qiáng)行進(jìn)入強(qiáng)行進(jìn)入(某處某處) away from down up of

37、f into 單項(xiàng)填空 ()(1) To understand the grammar of the sentence, you must break it _ into parts. A. down B. up C. off D. out 8、 break out A考查動(dòng)副詞的搭配。題意是：要想理解 這句話的語法，你必須把它劃分開。所以答案是A。 ()(2) News reports say peace talks between the two countries _ with no agreement reached. A. have broken down B. have broke

38、n out C. have broken in D. have broken up 8、 break out A題意是：據(jù)新聞報(bào)道，兩國(guó)和談?dòng)捎跊] 有達(dá)成一致意見而破裂。所以答案是A。 10. This produced a chain reaction, which made it possible for life to develop. 這就產(chǎn)生了一系列的反應(yīng)這就產(chǎn)生了一系列的反應(yīng), 使得生命得以發(fā)展了。使得生命得以發(fā)展了。 名詞或形容詞名詞或形容詞 不帶不帶to 的不定式的不定式 to do 過去分詞過去分詞 v-ed 介詞短語介詞短語 make+賓語賓語+賓語補(bǔ)足語賓語補(bǔ)足語 Ins

39、ects would _ _ _ _ _ _ _ in the world. 昆蟲會(huì)使我們無法在這個(gè)世界上生存。昆蟲會(huì)使我們無法在這個(gè)世界上生存。 Spaceships _ _ _ to travel to the moon. 宇宙飛船使去月球旅行成為可能。宇宙飛船使去月球旅行成為可能。 make it impossible for us to live make it possible 【想一想【想一想】還有哪些動(dòng)詞和還有哪些動(dòng)詞和make一樣一樣, 可以用于該結(jié)構(gòu)可以用于該結(jié)構(gòu)(+賓語賓語 +賓語補(bǔ)足語賓語補(bǔ)足語)？ 【參考答案【參考答案】 常用于此結(jié)構(gòu)的動(dòng)詞還有常用于此結(jié)構(gòu)的動(dòng)詞還有th

40、ink, feel, find, consider等。例如：等。例如： I think/find/feel/consider it my duty to help you. 我覺得我有責(zé)任幫助你。我覺得我有責(zé)任幫助你。 He found it impossible to leave Germany for the USA. 他發(fā)他發(fā) 現(xiàn)不可能離開德國(guó)去美國(guó)了?，F(xiàn)不可能離開德國(guó)去美國(guó)了。 【高考鏈接【高考鏈接】 (2012四川高考四川高考)New technologies have made _ possible to turn out new products faster and at a

41、lower cost. A. that B. this C. one D. it 【解析【解析】選選D?？疾榇~。句意：新的技術(shù)已經(jīng)讓以更低的成?？疾榇~。句意：新的技術(shù)已經(jīng)讓以更低的成 本更快地生產(chǎn)出新的產(chǎn)品成為可能。根據(jù)句意可知本更快地生產(chǎn)出新的產(chǎn)品成為可能。根據(jù)句意可知, it在句中在句中 作形式賓語作形式賓語, 真正的賓語是后面的不定式。真正的賓語是后面的不定式。 11. But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. 而當(dāng)我試著向前邁

42、步的時(shí)候而當(dāng)我試著向前邁步的時(shí)候, 我發(fā)覺我被送出去很遠(yuǎn)我發(fā)覺我被送出去很遠(yuǎn), 步子的步子的 跨度竟是在地球上的兩倍跨度竟是在地球上的兩倍, 因而我摔倒了。因而我摔倒了。 (1)“. . . 倍數(shù)倍數(shù)as形容詞形容詞/副詞副詞as. . . ”表示表示“是是的的 幾倍幾倍”, 該句型也可用該句型也可用half, one-fourth等詞等詞, 表示表示“是是的一的一 半半/四分之一四分之一”等。等。 (2)有關(guān)倍數(shù)的表達(dá)方式還有：有關(guān)倍數(shù)的表達(dá)方式還有： . . . 倍數(shù)倍數(shù)as many/much名詞名詞as. . . . . . 倍數(shù)形容詞倍數(shù)形容詞/副詞的比較級(jí)副詞的比較級(jí)than. .

43、 . . . . 倍數(shù)倍數(shù)the名詞名詞of. . . The (計(jì)量計(jì)量)名詞名詞ofAbe倍數(shù)倍數(shù)thatofB This river is three times as wide as that one. (句型轉(zhuǎn)換句型轉(zhuǎn)換) =This river is three times _ _ _ that one. The Yangtze River is almost twice _ _ the Pearl River. 長(zhǎng)江差不多比珠江長(zhǎng)兩倍。長(zhǎng)江差不多比珠江長(zhǎng)兩倍。 The price of the meat is twice _ _ _ last year. 肉價(jià)是去年的兩倍。肉價(jià)是

44、去年的兩倍。 the width of longer than what it was watch out for密切注意；當(dāng)心；提防密切注意；當(dāng)心；提防 Watch out for cars when you cross the roads. 過馬路時(shí)你要當(dāng)心車輛。過馬路時(shí)你要當(dāng)心車輛。 Watch out! There is a dog coming. 小心小心! 狗來了。狗來了。 【拓展【拓展】補(bǔ)全下列短語補(bǔ)全下列短語 watch out _ sb. /sth. 警惕或注意某人警惕或注意某人/某物某物 watch _ 保護(hù)；照看保護(hù)；照看 _ out 突出突出, 顯眼顯眼 _ out 計(jì)

45、算出計(jì)算出(答案、數(shù)量等答案、數(shù)量等)；設(shè)法弄懂；設(shè)法弄懂 for over stand work . 用所給單詞的適當(dāng)形式填空用所給單詞的適當(dāng)形式填空 1. They were _(prevent) from carrying weapons. 2. He was greatly _ (cheer)by the news. 3. Everyone was a bit _(puzzle) by her sudden departure. 4. I doubt the _ (exist) of aliens. 5. Many people are aware of the _ (harm) ef

46、fects of smoking. prevented cheered puzzled existence harmful 6. The bird _(lay) its eggs in other birds nests last year. 7. It is the most _ (violence) film that I have ever seen. 8. There were many fish _(float) in the river because of the serious pollution. 9. He contrasted the two different econ

47、omic _ (system) in his speech. 10. There were several _ (theory) about the way in which the fire started. laid violent floating systems theories . 完成句子完成句子 1. The puzzled look on his face suggested that _ _. 他臉上迷惑的表情表明他在苦苦思索這個(gè)讓人困惑的問題。他臉上迷惑的表情表明他在苦苦思索這個(gè)讓人困惑的問題。 2. His back injury may _ in tomorrows game. 他背部的傷可能使他參加不了明天的比賽。他背部的傷可能使他參加不了明天的比賽。 3. This ruler is _/twice longer than that one/three times the length of that one. 這把尺子是那把尺子的三倍長(zhǎng)。這把尺子是那把尺子的三倍長(zhǎng)。 he was puzzling over the puzzling problem prevent him from playing three times as long as that one 4. _, you should not depend