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1.unlikeprep.与……不同；不像；eg.Unlikeheryoungerbrother,sheisverydiligent.和她弟弟不同的是，她很刻苦。拓展：(1)unlikelyadj.不大可能的；未必会发生的；It'sunlikelythat…………的可能性不大(2)likelyadj.可能的adv.很可能It'slikelythat……可能…(3)sb./sth.belikelytodosth.……有可能做某事eg.这位影星可能来Themoviestar_________________.islikelytocome2.harmfuladj.有害的;造成伤害的；Manypeopleareawareoftheharmfuleffectsofsmoking.很多人都意识到了吸烟的危害。【联想拓展】（1）beharmfulto对……有害（2）harmn.&v.损害，伤害doharmtosb.=dosb.harm=harmsb.对某人有害；（3）Thereisnoharmindoingsth.做某事没有害处eg.在学习上取得进步没有任何害处。Thereisnoharminmakingprogressonstudy.(4)无害的；不致伤的；harmless【即学即练】①吸烟有害健康。Smoking__________________yourhealth.isharmfultodoesharmto3.existvi.存在；生存(无被动,无进行)Mancannotexistwithoutair.（1）existon……靠……生活、生存eg.他们靠微薄的收入生存是不可能的。It'simpossibleforthemtoexistonasmallincome.(2)thereexists/esisted……某地有……eg.在我们公司门口有两个巨大的石狮子。Thereexists2hugestonelionsatourcompanygate.拓展：（3）existencen.存在；生活;comeintoexistence产生；成立；开始存在；eg.DoyouknowwhentheEnglishwordtuhao________________comeintoexistence4.puzzlevt.&vi.(使)迷惑；(使)为难n.谜；难题Herreplypuzzledme.她的回答把我弄糊涂了。(2)puzzleabout/over….对…感到迷惑；苦苦思索；她几个星期也琢磨不透他那封奇怪的来信。She’sbeen____________hisstrangeletterforweeks.eg.Theirreasonfordoingitisstillapuzzletome.他们为什么要做此事我仍莫名其妙。(3)beapuzzletosb对某人来说是个谜【联想拓展】（4）puzzledadj.迷惑不解的；困惑的bepuzzledabout对……迷惑不解puzzlingadj.令人费解的【即学即练】③Shefelt______aboutherfuture.A.puzzleB.puzzlingC.puzzledD.puzzles（1）puzzlesb.使某人困惑puzzlingoverC5．intime及时；终于；迟早归纳拓展：ontimeatthesametimeattimesatonetimeatatimeatnotimefromtimetotimeaheadoftimetakeone’stimeinnotimeallthetime准时同时有时；偶尔；一度；曾经有一个时期；一次；每次绝不；在任何时候都不（放句首，句子用半倒装）不时地，间或；提前；提早别着急；慢慢来立刻，马上(＝atonce/immediately)一直；始终Willwebeintimeforthesixo'clocktrain?我们来得及赶上六点钟的那趟火车吗？Ifyoukeeponworkinghard,you'llsucceedintime.如果你坚持努力工作，你迟早会成功的。Thebossorderedustofinishourtaskaheadoftime.老板命令我们提前完成任务。Takeyourtimepacking,forwestillhaveoneandahalfhour.慢慢整理行李，因为我们还有一个半小时。我们决不能向敌人屈服。Atnotimecanwegiveintotheenermy.6.inone’sturn轮到某人；eg.Inmyturn,Itoldthemajoke.常用结构：(1)inturn依次；轮流；转而；反过来；(2)taketurns(todosth./doingsth.)轮流（做某事）(3)It’sone’sturntodosth.轮到某人做某事【即学即练】1.让我们轮流来做这项实验。Let’sdothisexperiment____________.2.你的态度影响别人，它又将会反过来影响你。Yourattitudeaffectsotherswhich____________affectsyou.3.今天该我洗盘子洗碗了。It’smyturn__________________today.inturninturntowashup7.prevent...from…阻止；制止eg.Hisbackinjurymaypreventhimfromplayingintomorrow’sgame.他背部的伤可能使他参加不了明天的比赛。用法点拨：prevent...(from)=stop...(from)=keep...from阻止……做……eg.应该派一些警察去阻止他们砍树。Somepolicemanshouldbesentto_______them_____________thetrees.stopcutingdownpreventcutingdownkeepfromcutingdown1.crash1）vt./vi.碰撞，坠落crashinto...冲入，撞入2）n.相撞（事故），飞机的（坠落），坠落声①aplane/carcrash飞机失事/汽车相撞事故②withacrash随着撞击声eg:Themotorcycle_____________thefence.eg:Anairliner_______westofDeverlastnight.eg:Theglassfelltothefloor_______________.crashedintocrashedwithacrash2.pullvt.拉，拖n.拉力，牵引力pull拉，拖→push推相关短语：pulldown拆毁（建筑物）pullaway开始驶离，开走pullin火车进站，驶向路边停靠pullon匆忙穿上（衣服）pullof脱掉pullthrough度过危机，恢复健康3.cheerv.为...欢呼，喝彩，鼓舞①cheerup感到高兴，感到振奋②cheersb.on为某人加油，喝彩③cheerthevictory为胜利欢呼④Cheers！干杯cheerfuladj.快乐的，高兴的eg1:我写那首歌只是为了让自己高兴。Iwritethissongjusttocheermyself.eg2:IfAndrewseesthesegreatreviews,he'll______________.eg3:Thegril________therunners______.cheerupcheeredon4.breakout(战争，火灾，疾病，争吵）突然发生，爆发相关短语：breakaway（from）摆脱，脱离breakdown机器故障，身体垮掉，汽车抛锚，谈判失败breakin闯入，打断breakinto破门而入，非法闯入breakone'sword/promise食言，失言breakup关系破裂，解散eg1：Afire_________inhishouselastnight.eg2:Whenthewar__________,theoldmanwasstilllivinginLibya.eg3:Thegril__________tosaytheguestshadarrived.eg3:Theircar___________.(他们的车出故障了)breakoutbreakoutbreakinbreakdown5.watchout密切注视，当心，提防相关短语：watchover照看，看守keepawatch守望，注视“当心，注意”watchoutlookouttakecarebecareful（注：watchout和lookout后必须加“for”才能跟宾语！）eg：TheAmericangovernmentwarneditscitizens__________forterrorists.watchout【即学即练】单项填空③Shefelt______aboutherfuture.A.puzzleB.puzzlingC.puzzledD.puzzles解析:选C。句意为：她对她的将来感到迷惑。puzzled（人）迷惑的，迷惘的；puzzling（物）令人迷惑的。5.pulln.&vt.拉(力）；拖；牵引力YoupushandI’llpull.你来推，我来拉。Ifeltapullatmysleeveandturnedround.我觉得有人扯我的袖子，便转过身来。反义词:push【速记名片】常用结构：pull(sb.)back（使某人）退却；撤回（某人）pullsb.down（指疾病）使某人虚弱pullsth.down毁坏,拆毁（如旧建筑物）pulltogether:齐心协力单项填空1.Solongaswe______,there’snomountaintopwecan’tconquer.A.pulloutB.pullinC.pulltogetherD.pullback解析：选C。考查pull短语的辨析。句意为：只要我们团结起来，就没有我们征服不了的山峰。由句意可知，选C。6.cheervt.&vi.(使)高兴、振奋；(对)欢呼【联想拓展】cheerfuladj.高兴的cheerlessadj.不高兴的Hewasgreatlycheeredbythenews.他听到这个消息非常高兴。ThecrowdcheeredloudlyastheQueenappeared.女王出现时群众高声欢呼。常用结构:cheersb.on为某人加油cheer(sb.)up（使某人）更高兴或更快活cheerfor为……欢呼，喝彩；给……加油【即学即练】完成句子①赛跑进入最后一圈时，观众为运动员加油鼓劲。Thecrowd________________________astheystartedthelastlap.②想到再次见到她，他就高兴起来。He____________atthethoughtofseeingheragain.③咱们去看足球比赛，为我们的校队呐喊助威。Let’sgotothefootballgameand____________ourschoolteam.答案：①cheeredtherunnerson②cheeredup③cheerfor【即学即练】完成句子1.让我们轮流来做这项实验。Let’sdothisexperiment____________.2.你的态度影响别人，它又将会反过来影响你。Yourattitudeaffectsotherswhich____________affectsyou.3.今天该我洗盘子洗碗了。It’smyturn__________________today.答案：1.inturn2.inturn3.towashup单项填空⑤Hegetscheerfulanddepressed______.A.byturnsB.taketurnsC.inturnD.inhisturn解析:选A。考查短语的辨析。此句的句意为：他的情绪高一阵低一阵。故选A。8.prevent.