Unit4-Using-Language-重难点词汇详解

Unit4UsingLanguage重难点词汇详解1.powerfuladj.强有力的;有影响力的教材原文Beforeweleft,LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.在我们启程以前，李彦平向我解释说,在我们的航行中会有三次引力的改变，第一次的改变将是最强的。经典例句①Light isapowerfulbiologicalforce,andonmanyspeciesitactsasamagnet.光是一种有力的生物力，照在很多物种上就像磁铁一样。②Itcontainsapowerfuldrugwhichaffectsmosquitoes.它含有一种强效的药物可以影响蚊子。③They dideverythingintheirpowertosavethebuildingdatingbacktotheQingdynasty,buttheireffortswereinvain.他们在能力范围内尽一切努力去挽救始于清朝时期的建筑，但是他们的努力白费了。（datebackto...追溯到）2.pulln.拉（力）；拖;牵引力教材原文Wearetoofarfromtheearthnowtofeelitspull….现在我们离地球太远了,感觉不到它的引力…经典例句①Passengersstoodandstretchedasthetrainpulledin.火车进站时旅客们站起来伸了伸懒腰。②The policemanpulledupthemotoristandaskedtoseehisdrivinglicence.警察让那个驾驶员停车，要看他的驾照。③Whetherthebuildingsinthisareashouldbepulleddownhasremainedrelevant；peoplearestilllookingforotherpossiblesolutions.这个地区的建筑物是否该拆事关重大,人们仍然在寻找其他可能的解决办法。（Whether引导主语从句）3.cheerup感到高兴；感到振奋教材原文Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.我立刻感到很高兴，由于失重我在我们的太空舱里飘来飘去，我望着地球变得越来越小，而月球越来越大。经典例句①I amtakingMaryouttocheerherup.我要带玛丽到外面转转，让她振作起来。②Everybodygaveacheerwhenhewon.他贏了时，大家都欢呼起来。③Agreatcheerwentupfromthecrowd.人群中爆发出一阵热烈的欢呼声。④WheneverIencounterdifficulties，shewillencouragemeandhelpmecheerup.每当我遇到困难时,她总是鼓励我，帮我振作起来。⑤Bathedinthesunshine,wejumpedandcheeredwithjoy.沐浴在阳光中,我们高兴地又跳又叫。（bathed前省略了Whenwewere)4.practicen.练习；实践教材原文“Ohdear,”Icried,“walkingdoesneedabitofpracticenowthatgravityhaschanged.”“天哪，”我大声说既然重力改变了,走路也的确需要练一练了。”经典例句①Practicemakesperfect.熟能生巧。②Myfatherdevotedhislifetothepracticeoflaw.我父亲当了一辈子的律师。③HelearnedtospeakEnglishwellbypracticingspeakingwheneverhehadachance.他一有机会就练习说英语,通过这个办法他学会了说一口流利的英语。④HemadeuphismindtodevoteallhisenergiestopracticinghisspokenEnglishbeforegoingtocollege.他下定决心在进人大学之前，将所有的精力投入练习英语口语中。（devotesth.todoingsth.把用于做）5.nowthat既然；由于（引导原因状语从句）教材原文“Ohdear，”Icried,“walkingdoesneedabitofpracticenowthatgravityhaschanged.”“天哪，”我大声说既然重力改变了,走路也的确需要练一练了。”经典例句①Nowthatyouaregrown-up,youmuststopthischildishbehaviour.既然已经长大了，你必须停止这种幼稚的行为。②Now thatdinnerisready,washyourhands.既然晚饭准备好了，洗手去吧。③Nowthatyou’vegotachance,youmightaswellmakefulluseofit.既然你有了这个机会，你不妨好好利用。（mightaswelldosth.做倒也不妨）6.getthehangof熟悉；掌握；理解教材原文AfterawhileIgotthehangofitandwebegantoenjoyourselves.过了一会儿，我掌握了走路的诀窍，然后我们开始痛快地玩起来。经典例句①Once yougetthehangofthings,thechoiceoftheoperatingsystemwillbecomeeasy.一旦你掌握了这些知识，操作系统的选择会变得容易。②Once yougetthehangofit，it’sapieceofcake!你一旦掌握了窍门，那就是小菜一碟！③There werealwaysgroupsofboyshangingaboutinthesquare.广场上总是有一群群男孩在闲荡。④Toaddspacetotheroom,hangamirroronthewalloraddafloormirrorintheroom.为了扩大房间的空间，可以在墙壁上悬挂一面镜子，或在室内加一块地镜。⑤Hehangedhisheadwhenheheardwhatshesaid.听到她说的话,他低下了头。7.breakout(战争、火灾、疾病等）突发;爆发教材原文Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.我们惊奇地看着，随着地球引力的增加，宇宙飞船的外层起火了。经典例句①Does everyoneknowwhattodoifafirebreaksout?如果发生火灾，大家都知道该怎么办吗？②Thecarbrokedownhalfwaytothedestination.汽车在到达目的地的中途抛锚了。③Thebandbrokeupin1970，buthappilytheyreunitedinthemid-1980s.这支乐队在1970年解散了，但是令人高兴的是,20世纪80年代中期他们再次聚在了一起。④Hekeptbreakinginwithsillyquestions.他不断问一些愚蠢的问题来打岔。⑤Thepickpocketbrokeawayfromthepolicemanwhohadheldhisarm.警察虽然抓住了那个扒手的手臂，却被他挣脱逃走了。⑥Scientists saytheyarebeginningtobreakthroughinthefightagainstcancer.科学家们说，他们在防治癌症方面开始有所突破。8.watchoutfor当心;提防；密切注意教材原文Watchoutfor...注意….经典例句①Watchout!There’sacarcoming.小心！有辆车开过来了。②Heclimbedthemountaincarefully,allthetimewatchingoutforlooserocks.爬山时，他步步小心，一直提防松动的石头。③You’ll catchacoldifyoudon’twatch