人教版高中英語(yǔ)必修3 Unit4重點(diǎn)詞匯詳解課件

1、必修必修Unit4航天科技航天科技 1. system n. 系統(tǒng)系統(tǒng); 體系體系; 制度制度例句例句 In our solar system eight planets circle around the sun. 在我在我們的太陽(yáng)系里，有八個(gè)行星繞太陽(yáng)們的太陽(yáng)系里，有八個(gè)行星繞太陽(yáng)運(yùn)轉(zhuǎn)。運(yùn)轉(zhuǎn)。the computer system 計(jì)算機(jī)系統(tǒng)計(jì)算機(jī)系統(tǒng)a railway system 鐵路系統(tǒng)鐵路系統(tǒng)the education system 教育體制教育體制a social system 社會(huì)制度社會(huì)制度搭配搭配運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。我認(rèn)為，目前的考

2、試制度必須改革。我認(rèn)為，目前的考試制度必須改革。派生派生 systematic adj.有條理的有條理的In my opinion, the present examination system must be reformed.2. theory n. 學(xué)說(shuō)學(xué)說(shuō); 理論理論例句例句 However, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions. 但是，一種普遍為人們所但是，一種普遍為人們所接受的理論是：宇宙起源于一

3、次大爆炸，接受的理論是：宇宙起源于一次大爆炸，這次大爆炸將物質(zhì)投射到四面八方。這次大爆炸將物質(zhì)投射到四面八方。搭配搭配 in theory 在理論上在理論上反義反義 in practice在實(shí)踐上在實(shí)踐上運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。總之，理論必須同實(shí)踐相結(jié)合?？傊?，理論必須同實(shí)踐相結(jié)合。 In brief, theory must be combined with practice.3. violent adj. 猛烈的猛烈的; 激烈的激烈的;強(qiáng)暴的強(qiáng)暴的例句例句 The earth became so violent that it was not clea

4、r whether the shape would last or not.地球變得激烈動(dòng)蕩地球變得激烈動(dòng)蕩, 不知道這不知道這個(gè)固體形狀是否會(huì)繼續(xù)。個(gè)固體形狀是否會(huì)繼續(xù)。搭配搭配 violent crime 暴力犯罪暴力犯罪派生派生 _n. 猛烈猛烈,暴力暴力(行為行為) _adv. 猛烈地猛烈地violently violence運(yùn)用運(yùn)用 根據(jù)提示完成英文句子。根據(jù)提示完成英文句子。 Children should not be allowed _ (看暴力電影看暴力電影). Her husband is _(一個(gè)粗一個(gè)粗暴的人暴的人). His heart beats _ (violen

5、ce).violentlyto watch violent moviesa violent man4. unlike prep. 不同不同; 不像（不像（not like; not typical of）例句例句 Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. 水在其他星球水在其他星球上也出現(xiàn)過(guò)，如在火星上就出現(xiàn)過(guò)，但上也出現(xiàn)過(guò)，如在火星上就出現(xiàn)過(guò)，但和地球不同的是，這些水后來(lái)都消失了。和地球不同的是，這些水后來(lái)都消失了。轉(zhuǎn)化轉(zhuǎn)化 unlike

6、 adj. 不同的不同的; 不相似的不相似的 反義反義 like prep. 像；同像；同一樣一樣 like adj. 相似的；同樣的相似的；同樣的運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。她不像她媽媽；她很高，而她媽媽很矮。她不像她媽媽；她很高，而她媽媽很矮。_; she is tall while her mother is very short.She is unlike her mother5. harmful adj. 有害的有害的, 傷害的傷害的例句例句 the continued presence of water allowed the earth to d

7、issolve harmful gases and acids into the oceans and seas. 由于地球上長(zhǎng)期有水的存在，由于地球上長(zhǎng)期有水的存在，使地球能夠把有害氣體和酸性物質(zhì)溶解使地球能夠把有害氣體和酸性物質(zhì)溶解在海洋里。在海洋里。反義反義 _adj.有益的有益的派生派生 _ n. & v. 傷害傷害,損害損害 _adj.無(wú)害的無(wú)害的,無(wú)惡意的無(wú)惡意的harmlessbeneficialharmbe harmful to對(duì)對(duì)有害有害do harm to sb. =do sb. harm對(duì)某人對(duì)某人有害處有害處搭配搭配運(yùn)用運(yùn)用 填入一個(gè)適當(dāng)?shù)脑~或用所給詞的填入一個(gè)

8、適當(dāng)?shù)脑~或用所給詞的正確形式填空。正確形式填空。 As we all know, smoking is_ (harm) to our health. Thats to say，it does harm _ our health. Therefore, we shouldnt smoke but to do something_ (harm) to our health.harmless harmfulto原句原句 They laid eggs too and existed on the earth for more than 140 million years. 恐龍也會(huì)下蛋恐龍也會(huì)下蛋,

9、而且在地球上存活了而且在地球上存活了超過(guò)超過(guò)1.4億年億年。(B3 P26)6. exist vi. 存在存在, 生存生存, 生活生活, 繼續(xù)存在繼續(xù)存在例句例句 This kind of rare animals existed 20,000 years ago. 這種珍稀動(dòng)物兩萬(wàn)年前這種珍稀動(dòng)物兩萬(wàn)年前就存在了就存在了。exist in 存在于存在于中中exist on=live on 靠靠生活生活exist as 作為作為而存在而存在, , We cant exist without water. That means our _ (exist) depends on water.運(yùn)用運(yùn)

10、用 用適當(dāng)?shù)脑~填空或用所給詞的適用適當(dāng)?shù)脑~填空或用所給詞的適當(dāng)形式填空。當(dāng)形式填空。 The little boy cannot exist _ the money he is earning. Matter can exist _ a solid, liquid or gas.onas existence原句原句 How life began on earth is one of the biggest puzzles that scientists found hard to solve. 生命是如何起源的這個(gè)問(wèn)題是科學(xué)家生命是如何起源的這個(gè)問(wèn)題是科學(xué)家很難解答的最大困惑之一。很難解答的最

11、大困惑之一。(B3 P27)7. puzzle n. 謎謎; 難題難題v. (使使)迷惑迷惑; (使使)為難為難例句例句 How he passed the exam is still a puzzle to us. 他如何通過(guò)考試的對(duì)我們來(lái)說(shuō)他如何通過(guò)考試的對(duì)我們來(lái)說(shuō)還是一個(gè)謎。還是一個(gè)謎。be puzzled by被被迷惑迷惑be a puzzle to sb. 對(duì)某人來(lái)說(shuō)對(duì)某人來(lái)說(shuō)是個(gè)謎是個(gè)謎/困惑困惑be/feel puzzled about 對(duì)對(duì)感到困惑感到困惑搭配搭配運(yùn)用運(yùn)用 填入一個(gè)恰當(dāng)?shù)脑~或完成句子。填入一個(gè)恰當(dāng)?shù)脑~或完成句子。 Your explanation was rea

12、lly a puzzle _ me. His recent behavior_ (使我困惑使我困惑). to puzzles me 原句原句 They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 他們把過(guò)多的二氧他們把過(guò)多的二氧化碳釋放到大氣層中化碳釋放到大氣層中, 這使得地球上的熱這使得地球上的熱不能釋放到太空中去。不能釋放到太空中去。(B3 P26)8. prevent /stop /keep.fro

13、m 阻止阻止/ /防防止止做做/ /發(fā)生發(fā)生提示提示 在主動(dòng)語(yǔ)態(tài)的句子中在主動(dòng)語(yǔ)態(tài)的句子中, stop和和 prevent后的后的from可省略可省略, 但但keep后的后的from不能省略不能省略; 在被動(dòng)語(yǔ)態(tài)中在被動(dòng)語(yǔ)態(tài)中, 此三個(gè)短語(yǔ)中的此三個(gè)短語(yǔ)中的from 均不可均不可省略。省略。比較比較 protect .from . 保護(hù)保護(hù)不受不受例句例句 The farmer built a wall to prevent his chickens from running out. 那個(gè)農(nóng)民那個(gè)農(nóng)民建了圍墻來(lái)防止雞跑出去。建了圍墻來(lái)防止雞跑出去。運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)提示完成句子根據(jù)漢語(yǔ)提示完

14、成句子。上漲的河水使我們過(guò)不了河上漲的河水使我們過(guò)不了河。The rising water _ _ .人們采取行動(dòng)來(lái)防止了環(huán)境的惡化人們采取行動(dòng)來(lái)防止了環(huán)境的惡化。People took measures _ _.prevented us fromcrossing the riverto prevent theenvironment from getting worse原句原句 Walking does need a bit of practice now that gravity has changed. 重力改變了重力改變了, 看來(lái)走路也的確需要練一練了看來(lái)走路也的確需要練一練了。(B3

15、P31)9. now that 由于由于; 既然既然例句例句 Now that you are a student, you must obey school rules. 既然你是學(xué)生既然你是學(xué)生, 你你必須遵守學(xué)校的規(guī)則必須遵守學(xué)校的規(guī)則。運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。 既然大家都來(lái)了既然大家都來(lái)了, 我們就開會(huì)吧我們就開會(huì)吧。_, lets begin our meeting. 既然已完成了工作既然已完成了工作, 你就應(yīng)該好好休息你就應(yīng)該好好休息。You ought to have a good rest _ _ .Now that/Since every

16、body is heresince/nowthat/as you have finished the work例句例句 The man in time caught the bag falling from upstairs. 那個(gè)人及時(shí)接住了那個(gè)人及時(shí)接住了從樓上掉下來(lái)的包。從樓上掉下來(lái)的包。10. in time 及時(shí)及時(shí)(=early or soon enough)原句原句 They were followed in time by land animals 陸棲動(dòng)物及時(shí)來(lái)到陸地。陸棲動(dòng)物及時(shí)來(lái)到陸地。(B3 P26)提示提示 in time與與on time不同不同, on time意

17、為意為“按時(shí)按時(shí), 準(zhǔn)時(shí)準(zhǔn)時(shí)” 是就時(shí)是就時(shí)間表來(lái)辦事。間表來(lái)辦事。in time 是就另一是就另一件事來(lái)辦事。件事來(lái)辦事。運(yùn)用運(yùn)用 填入一個(gè)恰當(dāng)?shù)脑~。填入一個(gè)恰當(dāng)?shù)脑~。 When our guests arrive at our home, we should serve tea _ time. With many subjects to concentrate on, I failed to finish homework _ time.onin原句原句 We watched, amazed as fire broke out on the outside of the spaceship

18、 as the earth gravity increased. 因?yàn)榈厍蛞驗(yàn)榈厍蛞υ黾右υ黾? 所以當(dāng)宇宙飛船外邊察出火所以當(dāng)宇宙飛船外邊察出火花時(shí)我們看呆了。花時(shí)我們看呆了。(B3 P31)11. break out (火災(zāi)火災(zāi)/戰(zhàn)爭(zhēng)戰(zhàn)爭(zhēng)/地震等地震等)爆發(fā)爆發(fā); 發(fā)生發(fā)生例句例句 The teacher stayed at home when the big fire broke out in the tall building. 當(dāng)那場(chǎng)高樓大當(dāng)那場(chǎng)高樓大火發(fā)生時(shí)火發(fā)生時(shí), 那個(gè)老師正呆在家里。那個(gè)老師正呆在家里。聯(lián)想聯(lián)想break into 破門而入破門而入break up (組織

19、組織, 公司等公司等)解散解散 break away from脫離脫離運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。 昨天晚上昨天晚上, 兩個(gè)小偷破門而入小李兩個(gè)小偷破門而入小李家家, 并偷走了一塊手表。并偷走了一塊手表。Last night, two thieves _ Xiao Lis home and stole a watch. broke into 當(dāng)?shù)卣鸢l(fā)生時(shí)當(dāng)?shù)卣鸢l(fā)生時(shí), 大家都在睡覺大家都在睡覺。When the earthquake _, everyone was sleeping in bed. ABA 樂隊(duì)去年解散了樂隊(duì)去年解散了,這是我們沒有料這是我們沒

20、有料想到的想到的。Band ABA _ last year, which was beyond our expectation. broke outbroke up12. give birth to 產(chǎn)生；分娩；引起；產(chǎn)生；分娩；引起；造成造成例句例句 They gave birth to young baby animals and produced milk to feed them.它們能產(chǎn)出幼仔并給幼仔哺乳。它們能產(chǎn)出幼仔并給幼仔哺乳。聯(lián)想聯(lián)想 at birth出生時(shí)出生時(shí) by birth在血統(tǒng)上；生來(lái)在血統(tǒng)上；生來(lái)運(yùn)用運(yùn)用 根據(jù)漢語(yǔ)意思完成英文句子。根據(jù)漢語(yǔ)意思完成英文句子。She _(生了一個(gè)健康男嬰生了一個(gè)健康男嬰)last night. 這段奇特的經(jīng)歷促成了他的最新一部這段奇特的經(jīng)歷促成了他的最新一部小說(shuō)的誕生。小說(shuō)的誕生。The extraordinary experience_.to his latest novel gave birth to a healthy baby boygave birth13. in ones turn 輪到某人輪到某人; 接著接著例句例句 Thus they have, in their turn, become the most important animals on the planet.于是，他們接著成