高三英语一轮复习-话题14航天科技

1.harmful:adj.有害；可致损伤吸烟有害健康。Smokingisharmfultoour

health.Thedrugisharmfultoourbrain.harm:harmless:harmlessnessn.损害/伤害adj.无害n.无害1第1页harm常见短语：dosb.harm/doharmtosb.domoreharmthangoodThereisnoharmin(sb.’s)doingsth.Itdoesnoharm(forsb.)todosth.对某人有害。弊大于利做…没有坏处2第2页2.…bylayingeggs.

lay-laid-laid-laying

放,把……放在……；产卵

Helaidhisbooksonthedesk.注意:lie(lay;lain;lying)躺；位于

lie(lied;lied;lying)说谎Thenaughtyboy____tomethatthehenthat____therejustnowhad____twoeggsthedaybefore.A.laid;laid;laidB.laid;lay;lainC.lied;laid;lainD.lied;lay;laidD3第3页3.puzzle:n.谜,难题vt&vi(使)迷惑,(使)为难

puzzled:adj.无法了解,(感到)迷惑

puzzling:adj.令人费解

sthpuzzlessb.

某事使某人迷惑/为难

sbbepuzzledbysth.某人对…感到迷惑

puzzleabout/oversth.苦苦思索solveapuzzle处理一个难题Whatpuzzlesmeiswhyheleftthecountrywithouttellinganyone.I’mpuzzledbyhisfailuretoreplymyletter.4第4页4.

nowthat:既然，因为既然每个人都到了，我们就能够开始会议。_________________________,wecanbeginthemeeting.因为你是一个大男孩,你就必须行为表现得更加好.______________________,youmustbehavebetter.NowthateverybodyishereNowthatyouareabigboynowthat同since相同,语气较弱,强调人们已知事实。Nowthatyouarehere,whynothavesupperwithus?yououghttohaveagoodrest,nowthatyou’vefinishedthejob.5第5页5.Theywereintimetoproducecarbon,nitrogen,…迟早，最终相当于soonerorlater

Youwillsucceedintimeifyoukeeponworkinghard.Don’tworry–I’msurethingswillgetbetterintime.2)intime(forsth./todosth.)及时，不迟Iwasjustintimefortheflight.Youmustgooffnowifyouwanttoattendthemeetingintime.6第6页与time相关短语:

aheadoftime

提前

innotime

立刻,马上

at

times

有时

at

atime

每次;一次

atnotime绝不；永不

atonetime曾经；一度

once

upon

atime

从前

on

time

按时;按时from

time

to

time

不时地takeone’stime不着急7第7页6.Itwasnotimmediatelyobvious

thatwaterwastobefundamentaltothedevelopmentoflife.水会对于生命发展起关键作用,这一点在当初并不太显著.本句表达是名词性从句在句中作主语作用,It是形式主语,真正主语是thatwaterwastobefundamentaltothedevelopmentoflife.如:

Itisnowonderthathehaspassedtheexam.8第8页7.(sth)dependon(sthelse):1)取决于Oursuccessdependsonwhethereveryoneworkshardornot.2)依赖，依靠Childrendependontheirparentsforalloftheirmaterialneeds.相信，信赖YoucandependonJane;shealwayskeepsherpromises.4）dependon/upon宾语补足语能够是不定式或分词Theoldmandependedonhisdaughtertokeephouse.Hedoesn’twork,butdependsonhisparentsgivinghimmoney.

我们成败取决于是否每个人都努力工作。9第9页8.ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.1）A+倍数+as+adj/adv原级+as+B表示A恰好是B多少倍2)A+倍数+adj/adv比较级+than+B表示“A比B大（长，宽，高…)几倍”3）A+倍数+thesize/weight/height/length/width+of+B表示A恰好是B多少倍10第10页1)“A+be+倍数+as+形容词原级+as+B”.

Thistreeisthreetimesastallasthatone.Hisfatheristwiceasoldashe.2)“A+be+倍数+形容词比较级+than+B”

长江差不多比珠江长两倍。

我们学校学生数量比他们学校多三倍。TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.Thenumberofstudentsinourschoolisthreetimeslargerthanthatintheirs.

11第11页

3)“A+be+倍数+the+名词(size,length,width)+of+B”Thenewlybroadenedsquareisfourtimesthesizeofthepreviousone.

新扩建广场是以前四倍大。

—Doyouregret_______(pay)100dollarsforthepainting?—No,Iwouldgladlyhavepaid_____________(两倍那么多了)forit.payingtwiceasmuch12第12页这条街是那条街四倍长~Thisstreetisthreetimeslongerthanthatone.~Thisstreetisfourtimesaslongasthatone.~This