必修三UNIT4單詞講解課件

1、1. unlike prep. 與不同；不像；eg.Unlike her younger brother, she is very diligent. 和她弟弟不同的是，她很刻苦。拓展：(1)unlikely adj. 不大可能的；未必會(huì)發(fā)生的； Its unlikely that 的可能性不大(2)likely adj. 可能的 adv.很可能 Its likely that 可能(3) sb./sth. be likely to do sth. 有可能做某事eg.這位影星可能來The movie star _ _ _ _.is likely to come 2 . harmful adj.

2、 有害的;造成傷害的； Many people are aware of the harmful effects of smoking. 很多人都意識(shí)到了吸煙的危害?！韭?lián)想拓展】（1）be harmful to 對(duì)有害 （2） harm n.&v. 損害，傷害 do harm to sb.= do sb.harm = harm sb. 對(duì)某人有害；（3）There is no harm in doing sth. 做某事沒有害處eg. 在學(xué)習(xí)上取得進(jìn)步?jīng)]有任何害處。 There is no harm in making progress on study. (4) 無害的；不致傷的； harm

3、less【即學(xué)即練】吸煙有害健康。 Smoking _ _ _ your health. is harmful todoes harm to3.exist vi. 存在；生存 (無被動(dòng),無進(jìn)行) Man cannot exist without air.（1） exist on 靠生活、生存eg.他們靠微薄的收入生存是不可能的。 Its impossible for them to exist on a small income.(2) there exists/esisted 某地有eg. 在我們公司門口有兩個(gè)巨大的石獅子。 There exists 2 huge stone lions a

4、t our company gate.拓展： （3） existence n. 存在；生活; come into existence 產(chǎn)生；成立；開始存在；eg.Do you know when the English wordtuhao_ _ _come into existence4.puzzle vt. &vi. (使)迷惑；(使)為難 n.謎；難題 Her reply puzzled me. 她的回答把我弄糊涂了。 (2) puzzle about/over . 對(duì)感到迷惑；苦苦思索； 她幾個(gè)星期也琢磨不透他那封奇怪的來信。 Shes been _ _ his strange lett

5、er for weeks. eg.Their reason for doing it is still a puzzle to me.他們?yōu)槭裁匆龃耸挛胰阅涿睢?3) beapuzzletosb對(duì)某人來說是個(gè)謎【聯(lián)想拓展】（4）puzzled adj.迷惑不解的；困惑的 be puzzled about 對(duì)迷惑不解 puzzling adj.令人費(fèi)解的【即學(xué)即練】She felt _ about her future. A.puzzle B.puzzling C.puzzled D.puzzles（1）puzzle sb. 使某人困惑puzzling overC 5in time 及時(shí)；

6、終于；遲早 歸納拓展：on time at the same timeat timesat one timeat a timeat no timefrom time to timeahead of time take ones timein no timeall the time準(zhǔn)時(shí)同時(shí)有時(shí)；偶爾；一度；曾經(jīng)有一個(gè)時(shí)期；一次；每次絕不；在任何時(shí)候都不（放句首，句子用半倒裝） 不時(shí)地，間或；提前；提早別著急；慢慢來立刻，馬上(at once/immediately)一直；始終 Will we be in time for the six oclock train?我們來得及趕上六點(diǎn)鐘的那趟火車嗎

7、？If you keep on working hard, youll succeed in time.如果你堅(jiān)持努力工作，你遲早會(huì)成功的。The boss ordered us to finish our task ahead of time.老板命令我們提前完成任務(wù)。Take your time packing, for we still have one and a half hour.慢慢整理行李，因?yàn)槲覀冞€有一個(gè)半小時(shí)。我們決不能向敵人屈服。At no time can we give in to the enermy.6.in ones turn 輪到某人； eg. In my t

8、urn, I told them a joke.常用結(jié)構(gòu)：(1)in turn依次；輪流；轉(zhuǎn)而；反過來；(2)take turns (to do sth./doing sth.)輪流（做某事） (3)Its ones turn to do sth.輪到某人做某事【即學(xué)即練】1.讓我們輪流來做這項(xiàng)實(shí)驗(yàn)。 Lets do this experiment _ _ .2.你的態(tài)度影響別人，它又將會(huì)反過來影響你。 Your attitude affects others which _ _ affects you.3.今天該我洗盤子洗碗了。 Its my turn _ _ _ today.in turn

9、in turnto wash up7.prevent.from 阻止；制止eg. His back injury may prevent him from playing in tomorrows game. 他背部的傷可能使他參加不了明天的比賽。用法點(diǎn)撥： prevent.(from)= stop.(from) = keep.from 阻止做eg. 應(yīng)該派一些警察去阻止他們砍樹。Some policeman should be sent to _ them_ the trees. stop cuting downprevent cuting downkeep from cuting down

10、1. crash1）vt./vi. 碰撞，墜落 crash into. 沖入，撞入2） n.相撞（事故），飛機(jī)的（墜落），墜落聲 a plane/car crash 飛機(jī)失事/汽車相撞事故 with a crash 隨著撞擊聲eg:The motorcycle_ the fence.eg:An airliner_west of Dever last night.eg:The glass fell to the floor_.Language points crashed intocrashedwith a crash2. pull vt. 拉，拖 n. 拉力，牽引力 pull 拉，拖 push

11、 推相關(guān)短語(yǔ)： pull down 拆毀（建筑物） pull away 開始駛離，開走 pull in 火車進(jìn)站，駛向路邊?？?pull on 匆忙穿上（衣服） pull of 脫掉 pull through 度過危機(jī)，恢復(fù)健康 3. cheer v. 為.歡呼，喝彩，鼓舞 cheer up 感到高興，感到振奮 cheer sb. on 為某人加油，喝彩 cheer the victory 為勝利歡呼 Cheers！ 干杯 cheerful adj. 快樂的，高興的eg1:我寫那首歌只是為了讓自己高興。 I write this song just to cheer myself. eg2:

12、If Andrew sees these great reviews, hell_.eg3: The gril_the runners_.cheer upcheeredon4. break out (戰(zhàn)爭(zhēng)，火災(zāi)，疾病，爭(zhēng)吵）突然發(fā)生， 爆發(fā)相關(guān)短語(yǔ)：break away （from）擺脫，脫離 break down 機(jī)器故障，身體垮掉，汽車拋錨， 談判失敗 break in 闖入，打斷 break into 破門而入，非法闖入 break ones word/ promise 食言，失言 break up 關(guān)系破裂，解散eg1：A fire_in his house last night.eg

13、2: When the war _,the old man wasstill living in Libya.eg3:The gril_to say the guests had arrived.eg3: Their car_.(他們的車出故障了)break outbreak outbreak inbreak down5. watch out 密切注視，當(dāng)心，提防 相關(guān)短語(yǔ)：watch over 照看，看守 keep a watch 守望，注視“當(dāng)心，注意” watch out look out take care be careful （注：watch out和look out后必須加“fo

14、r”才能跟賓語(yǔ)?。?eg：The American government warned itscitizens_ for terrorists.watch out【即學(xué)即練】單項(xiàng)填空She felt _ about her future. A.puzzle B.puzzling C.puzzled D.puzzles解析:選C。句意為：她對(duì)她的將來感到迷惑。puzzled（人）迷惑的，迷惘的；puzzling（物）令人迷惑的。5.pull n.&vt.拉(力）；拖；牽引力You push and Ill pull. 你來推，我來拉。 I felt a pull at my sleeve and

15、 turned round.我覺得有人扯我的袖子，便轉(zhuǎn)過身來。反義詞:push【速記名片】常用結(jié)構(gòu)：pull (sb.) back（使某人）退卻；撤回（某人）pull sb. down（指疾病）使某人虛弱pull sth. down毀壞, 拆毀（如舊建筑物）pull together:齊心協(xié)力單項(xiàng)填空1.So long as we _, theres no mountain top we cant conquer. A.pull out B.pull in C.pull together D.pull back解析：選C?？疾閜ull短語(yǔ)的辨析。句意為：只要我們團(tuán)結(jié)起來，就沒有我們征服不了的山

16、峰。由句意可知，選C。6.cheer vt. & vi. (使)高興、振奮；(對(duì))歡呼【聯(lián)想拓展】cheerful adj.高興的cheerless adj.不高興的 He was greatly cheered by the news. 他聽到這個(gè)消息非常高興。The crowd cheered loudly as the Queen appeared.女王出現(xiàn)時(shí)群眾高聲歡呼。常用結(jié)構(gòu):cheer sb.on為某人加油cheer (sb.) up（使某人）更高興或更快活cheer for為歡呼，喝彩；給加油【即學(xué)即練】完成句子賽跑進(jìn)入最后一圈時(shí)，觀眾為運(yùn)動(dòng)員加油鼓勁。 The crowd _

17、 _ _ _ as they started the last lap. 想到再次見到她，他就高興起來。 He _ _ at the thought of seeing her again. 咱們?nèi)タ醋闱虮荣悾瑸槲覀兊男ｊ?duì)吶喊助威。 Lets go to the football game and _ _ our school team.答案：cheered the runners on cheered up cheer for【即學(xué)即練】完成句子1.讓我們輪流來做這項(xiàng)實(shí)驗(yàn)。 Lets do this experiment _ _ .2.你的態(tài)度影響別人，它又將會(huì)反過來影響你。 Your at

18、titude affects others which _ _ affects you.3.今天該我洗盤子洗碗了。 Its my turn _ _ _ today.答案：1.in turn 2.in turn 3.to wash up單項(xiàng)填空He gets cheerful and depressed _. A.by turns B.take turns C.in turn D.in his turn解析:選A?？疾槎陶Z(yǔ)的辨析。此句的句意為：他的情緒高一陣低一陣。故選A。8.prevent.from 阻止；制止eg. His back injury may prevent him from p

19、laying in tomorrows game. 他背部的傷可能使他參加不了明天的比賽。用法點(diǎn)撥： prevent.(from)= stop.(from) = keep.from 阻止做eg. 應(yīng)該派一些警察去阻止他們砍樹。Some policeman should be sent to _ them_ the trees. stop cuting downprevent cuting downkeep from cuting down單項(xiàng)填空1.Some policeman should be sent to _ them _ the trees. A.prevent; to cut do

20、wnB.stop; cutting downC.keep; to cut downD.keep; cutting down B9.break out (災(zāi)難、戰(zhàn)爭(zhēng)等) 突發(fā)；爆發(fā)Trouble may break out at any moment. 災(zāi)難在任何時(shí)候都可能突然發(fā)生。When did the war break out? 戰(zhàn)爭(zhēng)是什么時(shí)候爆發(fā)的？溫馨提示：break out指戰(zhàn)爭(zhēng)、火災(zāi)等的爆發(fā)或疾病的突發(fā)，無被動(dòng)語(yǔ)態(tài)。常用結(jié)構(gòu)：break down 出故障；（計(jì)劃、談判等）失??；（身體、精神等）垮掉break in 闖入；插話break into 強(qiáng)行進(jìn)入；突然起來break of

21、f 折斷；突然中止；斷絕；結(jié)束break through 突破，強(qiáng)行穿過break up 解散；打碎；（學(xué)校）期終放假【即學(xué)即練】完成句子他一句話只說了一半就停住了。 He _ _ in the middle of a sentence. 你們什么時(shí)候放圣誕節(jié)假? When do you _ _ for Christmas? 雙方談判已經(jīng)破裂。 Negotiations between the two sides have _ _ .上星期有人闖入他的房屋。 His house was _ _ last week. 答案：broke off break up broken downbroken

22、 intoHehadtopausefromtimetotimetowipethesweatfromhisforehead,becausetheair-conditioningsystem_.(2012陜西)A.brokeinB.brokeupC.brokeoutD.brokedown10.watch out (for) 注意；當(dāng)心watch it 當(dāng)心，小心watch over 照看；看守keep a close watch/eye on 密切注視即學(xué)即練(1) _ _！ There is a car coming!當(dāng)心！有車來了！(2)_ _ _ cars while crossing th

23、e road.過馬路時(shí)要當(dāng)心車輛。Watch out; Watch out for11. now that “既然，由于”，連詞短語(yǔ)，用來引導(dǎo)原因狀語(yǔ)從句，口語(yǔ)中that?？墒÷浴ow that(since)the kids have left home，weve got a lot of extra space.既然孩子們都離開家了，我們住著就寬敞了。 單項(xiàng)填空1.It was reported that a plane crash happened last night and most of the passengers were badly _ and some 10 died. A

24、.damaged B.injured C.destroyed D.harmed解析：選B?？疾橥x詞的辨析。injure強(qiáng)調(diào)在意外事故中 “受傷”。2.The boiler from excessive pressure of steam _ . A.exploded B.burst C.explode D.erupt 解析：選A。考查同義詞的辨析。explode強(qiáng)調(diào)(火藥、炸藥或蒸氣壓力過高的鍋爐)爆炸，炸裂，突然破裂。由句意“蒸氣壓力過高的鍋爐突然破裂了”用一般過去時(shí)最合適，因此答案選A。3.He exists _ bread and water. A.on B.in C.by D.wit

25、h解析：選A?？疾槎陶Z(yǔ)搭配。exist on靠活下去(或生存);exist in在中存在(或生存); exist by在(某種思想、品質(zhì)等)中找到生活的力量;exist with與共存。由句意“他靠面包和水度日”可知答案。4. The villagers were often in _ clashes with each other in those years before the agreement was reached. A.interesting B.peaceful C.violent D.spiritual解析：選C。句意為：村民們?cè)趨f(xié)議達(dá)成之前彼此之間經(jīng)常發(fā)生暴力沖突。所謂的沖

26、突不應(yīng)是“有趣的”，也不會(huì)是“平安的”“和平的”，既然是彼此之間發(fā)生的事情，“精神沖突”亦不合適，只有“暴力的沖突”才符合句意，故選C。5.Freezing winter is harmful _ orange trees. A.for B.to C.of D.at解析：選B?？疾楣潭ǘ陶Z(yǔ)。句意為：寒冬對(duì)橘子樹有害。be harmful to. 對(duì)有害。6.She started as an office junior, and _ became the director the whole company. A.in surprise B.in return C.in turn D.in t

27、ime 解析：選D?？疾槎陶Z(yǔ)的區(qū)別。in surprise 吃驚地；in return作為回報(bào)；in turn輪流，依次；in time終于，一段時(shí)間后。由句意“她起初只是一名辦公室職員，最終成了整個(gè)公司的董事?！笨芍獞?yīng)選D。7.Everything went well according _ plan. A.to B.with C.for D.as解析：選A。句意為：一切依計(jì)劃進(jìn)展順利。according to為固定短語(yǔ)，意為“根據(jù)，按照”。8.The boy lying under the tree lied to his friends that his cock _ eggs. A.lied B.laid C.lay D.lain解析：選B。考查lie (lied,lied)說謊；lie (lay,lain)躺，平臥和lay(laid,laid)放置；下蛋等幾個(gè)詞的區(qū)別。句意為：躺在樹下的那個(gè)男孩向他的朋友撒謊說他的公雞下蛋了。9.There is no harm _. A.on try B.i