必修3 4单元 单词课件

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1、,单词短语知识要点1in time 及时;总有一天;迟早 归纳拓展in no time立刻,马上(once/immediately,用于句首时不倒装)ahead of time 提前;提早at times有时at one time一度;从前;曾经at a time依次;逐一;每次for the time being暂时;眼下take ones time别着急;慢慢来,at no time 绝不,在任何时候都不(用在句首时,句子要部分倒装)Will we be in time for the six oclock train?我们来得及赶上六点钟的那趟火车吗?Youre here in time

2、.你终于来了。The boss ordered us to finish our task ahead of time.老板命令我们提前完成任务。,【链接训练】She started as an office junior,and _ became the director of the whole company.Ain surprise Bin return Cin turn Din time【解析】句意为:她起初只是一名办公室职员,最终成了整个公司的董事。in surprise“吃惊地”;in return“作为回报”;in turn“轮流,依次”;in time“终于,一段时间后”。故

3、选D。【答案】D, _ will China be the first to use nuclear weapons.AAt no time BIn no timeCAt one time DAt a time【解析】at no time“绝不”,表示否定意义,置于句首引起倒装。in no time“立即,马上”;at one time“曾经”;at a time“每次,一次”。它们均不表否定意义,不能引起倒装。【答案】A,2exist vi.存在;生存(无被动式和进行时)归纳拓展(1)There exists/existed.某地有;存在exist in存在于exist on靠生活/生存(2

4、)existence n存在;生存be in existence存在come into existence开始产生,成立bring into existence使产生(3)existent adj.存在的;现行的,We cant exist without food or water.没有食物和水我们就不能生存。I can hardly exist on the wage that Im getting.我靠我挣的工资简直难以糊口。When did the world come into existence?世界是什么时候开始存在的?There exists a good way to sol

5、ve the existing problem in geography.有一个解决目前地理问题的好办法。,【链接训练】He doesnt believe in the _ of God.Alife Bexist Cexistence Dexhibition【解析】existence“存在”,符合题意。exist是动词,不能用在此处。句意为:他不相信有上帝存在。【答案】C,Its ones turn to do sth.轮到某人做某事了I will,in my turn,clean the window next week.下周轮到我擦窗户了。He asked each of us in tu

6、rn to answer his questions.他要我们每个人依次回答他的问题。 I think its my turn to drive the kids to school this week.我想这周该轮到我开车送孩子们上学了。,【链接训练】People try to avoid public transportation delays by using their own cars,and this _ creates further problems.Ain short Bin case Cin doubt Din turn【解析】in turn意为“反过来,依次,轮流”。根据

7、句意“人们为了避免公共交通造成的延误使用私家车,而这反过来产生了进一步的问题”,可确定选D项。in short意为“简而言之”;in case意为“万一”;in doubt意为“不能肯定的,可怀疑的”。【答案】D,【链接训练】Some policeman should be sent to _ them _ the trees.Aprevent;to cut down Bstop;cutting downCkeep;to cut down Dkeep;cutting down【解析】prevent/stop/keep sb.from doing sth.意为“阻止某人做某事”,排除A、C两项;

8、又因prevent/stop后的from在主动语态中可省略,而keep后的from不可省略,排除D,故B项正确。【答案】B,5puzzle nC难题,谜vt.使迷惑归纳拓展(1)be in a puzzle 感到困惑(2)puzzle sb.使某人迷惑puzzle out 仔细思考,设法想出答案(3)puzzling adj.令人困惑的puzzled adj.感到困惑的,Their reason for doing it is still a puzzle to me.他们为什么要做此事我仍莫名其妙。What puzzles me is why he left the meeting with

9、out telling anyone.令我困惑不解的是,他为什么没告诉任何人就从会议上离开了。,【链接训练】Facing the_situation, the sales manager looked_.Apuzzling;puzzled Bpuzzling;puzzling Cpuzzled;puzzled Dpuzzled;puzzling【解析】句意为:面临着令人困惑的局势,销售部经理看起来迷惑不解。第一空形容situation的特点用puzzling;表示人困惑时用puzzled。故正确答案为A项。【答案】A,6pull n&vt.拉(力);拖;牵引(力)归纳拓展pull apart拉

10、开;分开;扯断pull away(汽车)开走;把抛在后面pull in进站;吸引pull out离站;(使)摆脱困境pull over靠路边停车pull through恢复健康;完成(十分困难的事)pull up使车停住pull down贬低(人);拆毁(建筑物),Tom jumped onto the bus just as it was pulling away.公共汽车正要开走时,汤姆跳了上去。He succeeded in pulling through the difficulty.他平安地渡过了难关。The workers are trying to pull down the d

11、angerous houses.工人们正在努力拆毁那些危房。,【链接训练】She _ her car suddenly at a red light and I nearly hit her car.Apulled up Bpulled downCpulled in Dpulled out【解析】考查动词短语辨析。句意为:在红灯前她突然把车停下,我差点撞上她的车。pull up“停车,把车停下”,符合题意。pull down“拆毁,摧毁”;pull in“进站”;pull out“驶出(车站)等,(使)摆脱困境”。【答案】A,7cheer vt.&vi.(使)高兴;(对)欢呼n愉快,欢呼;喝彩

12、归纳拓展(1)cheerful adj.快乐的,高兴的cheering n. 欢呼,喝彩 adj.令人振奋的,令人高兴的Cheers!(用于祝酒)干杯!(2)cheer up使高兴,使振奋;高兴起来,振作起来cheer sb.on(比赛中)激励某人;为某人加油,The good news cheered everybody who heard it.好消息使每一个听到的人感到高兴。Cheer up!Our trouble will soon be over.振作起来!我们的困难很快就会过去。,【链接训练】_,dear!Things wont be as bad as you think.The

13、re certainly will be chances for you.AHurry up BLook upCCheer up DMake up【解析】考查情景交际。句意为:亲爱的,振作起来!事情并不像你想象得那么糟。你一定还有机会。Cheer up!“振作起来,别灰心!”用于鼓励对方。Hurry up“抓紧时间,赶快”,用于催促某人;Look up“向上看”;Make up固定短语,意为“组成;弥补;编造”。【答案】C,8break out (火灾、战争等)突然发生,爆发(无被动语态)归纳拓展break away from 脱离(政党等);打破(陈规等)break down 出故障,抛锚;

14、(计划等)失败;(身体、精神等)垮掉;坍塌;中止;(化合物等)分解break in 破门而入,突然闯入;打断(话语等)break into 破门而入;突然起来break off 折断;突然中止;断绝,结束break through 突破,突围break up 打碎,拆散;散开,解散;(学校)期终放假,(集会)结束,They had escaped to America shortly before the war broke out in 1939.1939年战争爆发前不久他们逃到了美国。Her health broke down under the pressure of work.她的身体

15、因工作压力垮掉了。,【链接训练】When a fire _ in the downtown highrise apartment in Shanghai on Nov.15,2010,fifty eight people lost their lives.Abroke off Bbroke outCbroke down Dbroke up【解析】break off“折断,中止”;break out“(战争、火灾等)突然爆发”;break down“出故障;(身体)垮掉”;break up“破碎、解散”。题干中说的是火灾突然发生,故符合题意的只有B项。【答案】B,Have a break !,H

16、ave a break !,课文中有用的句型1. But when I tried to step forward,I found I was carried twice as far as on the earth and fell over.但是当我试着向前迈步的时候,我发觉我被送出去在地球上的两倍远,因而我摔倒了。本句中含有表达倍数的结构,倍数twice用来修饰形容词的原级比较as far as。归纳拓展英语中常见的表示倍数的结构:(1)“A谓语倍数as形容词或副词的原级asB”,表示“A是B的多少倍”。(2)“A谓语倍数形容词或副词的比较级thanB”,表示“A比B大(长、高、宽等)多少倍”。,

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