人版英語必修3-Unit4詞匯講解-課件

1、Words and Expressions 必修三 Unit 4Words and Expressions 必修三 U1.astronomy /n. C/ 天文學(xué)New discoveries were made in astronomy, geography and medicine.astronomer /n./ 天文學(xué)家I joined the Young Astronomers Club.astronaut /n.C/ 宇航員Yang Liwei becomes the first Chinese astronaut.1.astronomy /n. C/ 天文學(xué)New disc2. s

2、ystem /n.C/ 系統(tǒng)，體系；制度； /n. U/條理，秩序the solar system 太陽系a social system 社會制度under the new/old system 在新/舊制度下They have an alarm system in the house.他們房子里裝有報警系統(tǒng)。2. system /n.C/ 系統(tǒng)，體系；制度； 3. theory /n.U/ 理論We should combine theory with practice.evolution theory 進化論in theory 理論上3. theory /n.U/ 理論We should

3、co4. violent /adj./violent /adj./ 猛烈的；激烈的；violently /adv./猛烈地；兇猛地violence /n./暴力，暴行with violence 猛烈地，強有力地have a violent temper 脾氣暴躁takeby violence 搶奪.Whatever happens, we will never use violence.4. violent /adj./violent /adj.5. unlike /prep./ &/adj./unlikely /adj./不大可能的likely /adj./可能的It is likely t

4、hat很可能.be likely to do sth. 可能做某事Unlike his father, Tom is humorous and easygoing.5. unlike /prep./ &/adj./unlik6.harmful /adj./be harmful to 對有害harm /n./ &/v./損害，傷害do sb. harm/ do harm to對.有害There is no harm (in) doing sth. = It does no harm (for sb.) to do sth.（某人)做某事無害處6.harmful /adj./be harmful

5、to 7.exist /v./ 存在，生存exist as 作.而生存，以形態(tài)存在exist on 靠.生活/生存exist in 存在于.中There exist(s) existed.某地有.;存在.existence /n./ 存在，生存come into existence (= begin to exist) 產(chǎn)生，成立in existence 現(xiàn)存的，存在的7.exist /v./ 存在，生存exist as 作.8. puzzle/n./ 謎，難題 /v./ （使）迷惑puzzle about /over 苦苦思索，仔細琢磨puzzled/adj./迷惑不解的；困惑的be/fee

6、l puzzled at/about.對.感到迷惑puzzling/adj./ 令人費解的puzzlement /n./迷惑8. puzzle/n./ 謎，難題 /v./ （使）迷惑9.physicist/n./ 物理學(xué)家physics /n./物理（學(xué)）physical /adj./ 肉體的，身體上的physical labour 體力勞動physical change 物理變化physical science 自然科學(xué)physically /adv./ 身體上；肉體上反義：metal 物質(zhì)的，自然界的9.physicist/n./ 物理學(xué)家physics /n10.extict /adj.

7、/(生物)絕種的, 滅絕的(官職等)廢除了的; 無合法繼承人的 (法令等)過時的; 失效的an extinct family 已絕嗣的家族an extinct species 已滅絕的物種 an extinct volcano 死火山 All hope was extinct. 一切希望都破滅了。10.extict /adj./(生物)絕種的, 滅絕的(官11. pull /v./ &/n./ 拉，拖；牽引力pull down 拆毀pull through 康復(fù)，痊愈pull up 停車，停止pull in (火車等）到站，進站； 駛向路邊（或某處）?？緿ont worry; your fat

8、her is going to pull through.11. pull /v./ &/n./ 拉，拖；牽引力pul12.exhaust/vt./ 使筋疲力盡；用完，耗盡There is no need to exhaust yourself clearing up.近義：tire sb.(out) / wear out 使疲憊不堪 use up= run out of 用完，用光 give out = run out 用完，用光 give out 筋疲力盡exhausted /adj./筋疲力盡的，耗盡的exhausting/adj./令人筋疲力盡的exhaustive/adj./徹底的，

9、全面的exhaustion/n./筋疲力盡，耗盡12.exhaust/vt./ 使筋疲力盡；用完，耗盡The1. in time 及時in time for sb. to do sth. 來得及（做）.,及時（做）on time 按時，準時at times 有時，偶爾at no time 在任何時候都不；決不 （至于句首時，主句使用部分倒裝）in no time 立即，立刻at a time 依次1. in time 及時in time for sb. t2.lay eggs 下蛋l(fā)ay /vt./放置；安放；產(chǎn)卵，下蛋She laid the baby down gently on the

10、bed.Bettys birthday party is going to be held in the living room, with a dining table already _for a meal to be cooked.A. laid B. chosen C. gotten D. hadA2.lay eggs 下蛋l(fā)ay /vt./放置；安放；產(chǎn)卵3. give birth to 產(chǎn)生，分娩；引發(fā)，造成by birth 血統(tǒng)上，生來，天生的at birth 出生時bring.to birth 使產(chǎn)生Religious differences between them gave

11、birth to a ar.3. give birth to 產(chǎn)生，分娩；引發(fā)，造成by4. in ones turn 輪到某人in turn 依次，輪流take turns in sth./ to do sth. 輪流做某事Its ones turn to do sth. 輪到某人做某事You can take turns to use the computer.4. in ones turn 輪到某人in turn 依5. prevent.from 阻止，制止prevent sb.( from) doing sth. = stop sb.( from) doing sth. 在主動語態(tài)中f

12、rom 可以省略，而在被動語態(tài)中from 不可以省略。keep sb. from doing sth. 中的from 無論在主動語態(tài)中還是在被動語態(tài)中都不可以省略。protect.from.表示“保護.不受.損害”from后接能帶來傷害或損害之物。5. prevent.from 阻止，制止prevent6. cheer upcheer (sb./sth.) up （使）感到高興； （使）感到振奮cheer sb. on 為某人加油cheers!干杯！Cheer up! We are near the finishing line.6. cheer upcheer (sb./sth.) up7.

13、 now that 既然，由于課文原句：“Oh dear,”walking does need a bit of practice now that gravity has changed.”now that 引導(dǎo)原因狀語，在口語中可以省略that.與now that 意思相近的有seeing that, since 等。就像although/though不能與but連用，because 不能與so連用一樣，當(dāng)now that 引導(dǎo)的從句表示原因時，主句前不能加so.7. now that 既然，由于課文原句：“Oh dear辨析now that/because/ since/as/forno

14、w that 說明已經(jīng)成為事實的原因.because 語氣最強，回答是用why提問的問句，表示直接的或為人所不知的原因。since表示間接附帶的眾所周知的原因，意為 “既然”，常放在句首。as 表示一種明顯的、已知的理由，意為“由于”for 是并列連詞，用來補充說明理由或提供一種解釋，不一定是真正的原因，不能放在主句前面。辨析now that/because/ since/as/f7. now that 既然，由于注意：引導(dǎo)原因狀語的介詞短語：due to, thanks to, because of , as a result of , owning to, on account of 等。

15、Now (that) you have mentioned it, Ill keep it in mind.7. now that 既然，由于注意：引導(dǎo)原因狀語的介詞短8. get the hang of得知的竅門；熟悉某物的用法；理解某事Typing is easy once you get the hang of it.8. get the hang of得知的竅門；熟悉某物9. break out 突發(fā)，爆發(fā)The fire broke out last night in his neighbours further.break into 強行進入某處break in 強行進入break

16、 down 停止運轉(zhuǎn)；失敗；垮掉break up 解散，分解break through 取得突破9. break out 突發(fā)，爆發(fā)The fire bro10. watch out for 留意Watch out! There is a car coming. 小心！有車來了。拓展：watch over 照顧；監(jiān)督；保護keep a watch 守望，注視be under a close watch 被嚴密監(jiān)視10. watch out for 留意Watch out!11.block out 1） 擋住，遮?。ü饩€，聲音等）2）忘掉，抹去（不愉快的事）Black clouds blocke

17、d out the sun.The memory was so terrible that she tried toblock it out.拓展block off （用路障）封鎖，堵住block up 塞住，封?。?、洞）block ones way 擋住某人的去路block sth. in/ out 草擬；畫.的簡略圖11.block out 1） 擋住，遮?。ü饩€，聲音等）12. depend on/upon依賴，依靠；取決于The poor man depends on his son to earn money.依靠某人做某事depend on/upon sb. to do sth.

18、 depend on/upon ones doing sth. That/ It (all) depends. 依情況而定。12. depend on/upon依賴，依靠；取決于The. 句型透視1. “so. . . that”句型The earth _(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)This produced a chain reaction, which _(使生命的生長發(fā)育成為一種可能). became so viole

19、nt thatmake it possible for life to develop. 句型透視1. “so. . . that”句型bec. 句型透視3. “倍數(shù)+as+adj. /adv. +as”句型But when I tried to step forward, I found I was carried _(是地球上的兩倍遠)and fell over. 4. now that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). twice as for as on the earthnow that the gravity has changed. 句型透視3. “倍數(shù)+as+adj. /adv. +a. 句型透視5.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), 使得生命得以發(fā)展了。 make+賓語+賓語補足語名詞或形容詞不帶to 的不定式 to