人教版版八年级英语下册10单元知识点总结大全

第第⑴.保管；保存；保留PleasekeepthesethingsformewhileIamaway.⑵.赡养；饲养Iusedtokeepsheepinmychildhood.⑶坚持；继续接V-ing形式作宾语。IfyoukeeppracticingyourspokenEnglish,you'llsoonmakegreatprogress.⑷阻止；阻碍keepsb/sthfromdoingsth其中介词from不能省略。Theheavyraindidn'tkeepthemfromwatchingthefootballmatch.⑸保持。其后常接复合宾语，表示使（某人或某物）保持某种状态或使某一动作继续。①keep+sb/sth+介词。Ifyourhandsarecold,keeptheminyourpockets.②keep+sb/sth+形容词。Thesegloveswillkeepyourhandswarm.③keep+sb/sth+V-ing，“让某人/某物一直……”，强调动作的持续性。I'msorryI'vekeptyouwaiting.很抱歉，让你久等了。【短语】keeparecord保持记录，keepintouch(with)保持与……的联系keepout(of)把……关在外面，keepup保持；使……不能入睡keepone's/aneyeon密切注视keepaway(from)离开keepinmind牢记keepone'sword遵守诺言【2013山东济南3】—CouldI__________youriPad,Alice?—Ofcourse.Hereyouare.A.lendB.keepC.borrowD.return【2013贵州安顺2】“Didyouborrowthecomicbookfromthelibrary?”“Yes.I_____itforthreedays.I’llreturnitthisafternoon.A.borrowedB.keptC.haveborrowedD.havekept【解析2】bringback(v+adv)使回想起；使回忆起()Ourexcellentservice______ourguests_____yearafteryear.A.bring;downB.bring;backC.bring;inD.bring;up3.Youcanalsogiveoldthingsawaytopeopleinneed.你也能捐赠旧东西给那些需要的人们。【解析】inneed需要；需求【拓展】indanger在危险中introuble在困境中insilence在沉默中ingoodhealth在好的健康状态中Afriendinneedisafriendindeed.患难见真情4.BecauseIdon’treaditanymore.因为我不用再读了。【解析】nomore;not…anymore/nolonger;not...anylonger不再词语同义词用法nolongernot…anylonger强调时间或动作“不再延续”,与延续性动词连用nomorenot…anymore强调数量和程度“不再增加”,与非延续性动词连用位置区别：当修饰动词时，nolonger通常置于be或行为动词前；nomore一般置于行为动词后。not...anylonger与not...anymore常置于句末。Hecannolongerwalk.=Hecan’twalkanylongerThelittlegirlnomorecried.=Thelittlegirldidn’tcryanymore.()Itislate.Wecannotwaithim_____.A.anymoreB.nomoreC.more5.BecauseI’vehaditsinceIwasababy.因为自从我很小的时候我就有它了。【解析】since自从Since+从句（一般过去时），主句用现在完成时Hehasstudiedveryhardsincehecametoourschool.【辨析】since与for在现在完成时态中的用法：since其后接时间点或时态为一般过去时的句子，表示某事是从什么时候开始的I’vebeenasoldiersincetwoyearsagofor其后接时间段，表示某事持续了多长时间I’vebeenasoldierfortwoyears.【2011天津】Mygrandmother___alotofchangesinTianjinsinceshecamehere.A．seesB.canseeC.willseeD.hasseen【2011贵州毕节】I______manynewfriendssinceIcamehere．A．makeB．made C．willmakeD．havemade【2013上海】—_______haveyoubeeninthesportsclub?—SincethefirstmonthIcametotheschool.A.HowoldB.HowlongC.Howmuch D.Howsoon6.Ihavesomethingforthekids,我有一些孩子们的东西。【解析】for给；为了介词for用法归纳用法1：(表目的)为了。Theywentoutforawalk.他们出去散步了。用法2：(表利益)为，为了。WhatcanIdoforyou?你想要我什么？【2013上海4】Thechemicalsinthevegetablesandfruitarebad____ourhealth.A.from B.with C.of D.for【2013牡丹江2】—Whatdidyouget_____yourmother____Mother’sDay?—Abeautifulcardandascarf.A.for;inB.for;onC.to;for【2013江苏盐城4】Itisreportedthatalotofadultstakelessonsonline___furthereducation.A.afterB.toC.withD.for7.I’vehadthismagazineforacoupleofmonths.我拥有这本杂志已经几个月了。【解析】acoupleof几个；一些=afew后接可数名词复数acoupleof“一对”,优指夫妻、情侣I’llbebackin_______________days.(几天)8.Thestoriesinsidemaybeabitold,butthey’llstillinteresting.里面的故事或许有点老，但它们仍然很有趣。【解析】abit稍微；有点儿abit/alittle辨析：⑴abit和alittle在肯定句中,修饰动词、形容词、副词和比较级,"一点儿"。Thespeakerspokeupabit/alittlesoastomakehimselfheardmoreclearly.演讲者把嗓门提高了一点儿,以便使别人听得更清楚。⑵alittle可以直接作定语修饰名词,abit修饰名词，需后面加of构成短语,两者都只能修饰不可数名词Thereisalittle/abitoffoodleftforlunch.午饭只能吃剩下的一点食品了。9.Andcheckoutthesesofttoysandboardgamesforyoungerkids.【解析】checkout查看；观察checkv检查【2013浙江宁波】Please_______(检查)yourtestpaperbeforeyouhanditin.【2013安徽3】IwillmeetJaneatthestation,Please___whattimeshewillarrive.A.countB.chooseC.checkD.catch【2013天津】—Juliesaidshesentyouabirthdaycardyesterday.Haveyougotit?—Oh,really!Ihaven’t____mymailboxyet.A.examinedB.reviewedC.testedD.checked10.Mychildrenaregrowingupfast.我的孩子们成长的很快。【解析】growup成长（常用于指人或动物）()WhenIgrowup,Iwanttobeateacher.A.giveupB.putupC.getolderD.getyounger11.Sowe’vebeenclearingoutalotofthingsfromourbedroomforayardsale.所以，我们正从卧室里清理出许多东西来办一场庭院拍卖会。【解析】clearout清理；把……清空cleanup清理；使整洁Pleaseclearoutthecupboard.12.We’vedecidedtoeachsellfivethingswenolongeruse.我们已经决定每人卖出去五件我们不用的东西。【解析1】decide决定decidev决定→-decisionn决定(1)decidetodosth=makeupone’smindtodosth决定做某事(2)makeadecision做决定①Mymotherhasdecided_______________(take)metoactinglessons.()②Mybrothermakesuphismindtostudymedicine.A.decidedB.needsC.decidesD.has【四川南充】Theclassroomwassodirty.Idecided____.A.cleanitupB.tocleanitupC.cleanupit【2013河北中考2】Thechildrendecide____theirschoolyardthisFridayafternoon.A.cleanB.tocleanC.cleaningD.cleaned【解析2】nolonger=not...anylong不再【在句中位置】nolonger位于助动词、情态动词或实意动词之后；not...anylongernot常与助动词或情态动词连用，anylonger位于句末。Inolongerliveinthiscity.=Idon’tliveinthiscityanylonger.【辨析】nolonger,not...anylonger;nomore,not...anymore.词语同义词用法nolongernot...anylonger强调时间或动作“不再延续”，与延续动词连用nomorenot...anymore强调数量和程度“不再增加”与非延续动词连用Hecannolongerwalk=Hecan’twalkanylonger.Ihavenomoremoneytogiveyou.=Idon’thavemoneytogiveyouanymore.13.Forexample,he’sownedatrainandrailwaysetsincehisfourthbirthday,andheplayedwithitalmosteveryweekuntilhewasaboutseven.例如，从他四岁生日以来，就已经拥有了这列火车和铁轨的组合，大约七岁之前他几乎每周都要玩这个玩具。【解析】own拥有ownv拥有→ownern物主ofone’sown某人自己的theownerof………的所有者①Whoisthe____________(own)ofthebike?②Iwanttoseeitwith_______(I)owneyes.14.Andhedidn’twanttolosethetoymonkeyhe’shadsincethen,并且他也不想失去自从他出生就拥有的那个玩具猴。【解析】lose(lost,lost)失去Ihopewewon’tlosethecompetition.Mydaughterwasmoreunderstanding,althoughshefeltsadtopartwithcertaintoys.我女儿比较通情达理，尽管要失去某些玩具也让她感到难过。【解析1】partwith与……分开；失去（尤指舍不得的东西）Theyweresorrytopartwiththeoldhouse.()Shefeltsadtopartwithherlovelydog.A.findB.lostC.loseD.found【解析2】certain⑴某种；某事；某人（在句中只能做定语，常与不定代词a连用，可修饰单、复数名词）Acertainpersoncalledonmeyesterday.⑵adj.确实的，无疑的becertainof对某事有把握Theyarecertainofsuccess.becertaintodosth肯定做某事Heiscertaintocome.becertain+that确信I’mcertainthathe’llcome.()Heiscertain_____toninety.A.liveB.ofliveC.toliveD.toliving.Asforme,Ididn’twanttogiveupmyfootballshirts,but,tobehonest,Ihaven’tplayedforawhilenow.对于我来说，我不想放弃我的足球衫，但说实话，现在我有段时间没踢足球了。【解析1】asfor至于；关于（后跟名词、代词或动名词作宾语）Asforcomputer,I’mnottellingyouanything.()—____thedoctors,themostbeautifulteacherZhangLiliisoutofdanger.—Wewishhertoliveahealthyandhappylifeinthefuture.A.InfrontofB.ThankstoC.AsforD.Acrossfrom【解析2】tobehonest=totell(you)thetruth老实说；说实话【拓展】honestadj.诚实的（反）dishonestadj.不诚实的anhonestboy一个诚实的男孩【注】honest以元音音素开头，所以前面的定冠词要用an.①Heisa_________(honest)boy.Wealldon’tlikehim.②Sheisan__________(honest)girl.Wealllikeher.③Tomlikestotelllies,heis________(honest)()Weshouldbehonesttoeveryone.Weshouldn’ttelllies.A.dishonestB.trueC.truthD.truthful【解析3】forawhile一会儿Shelikestoliedownforawhileafterlunch.17.Whatwilltheydowiththemoneytheyraisefromthesale?他们要用卖东西筹集来的钱做什么？【解析】dowith处理；对付（某人或某物）dealwith处理与how连用dowith处理与what连用dowith“处理；安置”，强调处理的对象，常与what连用Idon’tknowwhattodowiththeseletters.dealwith“处理；应付”，强调处理的方式、方法，常与how连用Hetaughtmehowtodealwithpressure.【2011玉溪】Wecan’tdecidewhatwillhappeninourlife,butwecandecidehowwewill_____it.A.agreewithB.beginwithC.dealwithD.comeupwith()—____doyou____yourbrokenwatch?—Iamgoingtotakeittothewatchmaker’s.A.How;dowithB.What;dealwithC.How;dealwithD.What;didwith新人教版八年级下册英语重点短语句子Units1~8Unit1What’sthematter?一、重点短语1.haveafever发烧2.haveacough咳嗽3.haveatoothache牙疼4.talktoomuch说得太多5.drinkenoughwater喝足够的水6.haveacold受凉;感冒7.haveastomachache胃疼8.haveasoreback背疼9.haveasorethroat喉咙痛10.liedownandrest躺下来休息11.hotteawithhoney加蜂蜜的热茶12.seeadentist看牙医13.getanX-ray拍X光片14.takeone’stemperature量体温15.putsomemedicineonsth.在……上面敷药16.feelveryhot感到很热17.soundlike听起来像18.allweekend整个周末19.inthesameway以同样的方式20.gotoadoctor看医生21.goalong沿着……走22.onthesideoftheroad在马路边23.shoutforhelp大声呼救24.withoutthinkingtwice没有多想25.getoff下车26.haveaheartproblem有心脏病27.toone’ssurprise使[京讶的28.thanksto多亏了；由于29.intime及时30.savealife挽救生命31.getintotrouble造成麻烦32.rightaway立刻；马上33.becauseof由于34.getoutof离开;从……出萍35.hurtoneself受伤36.putabandageonsth.用绷带包扎37.falldown摔倒38.feelsick感到恶心39.haveanosebleed流鼻血40.cuthisknee割伤他的膝盖41.putherheadback把她的头向后仰42.haveproblemsbreathing呼吸困难43.mountainclimbing登山运动44.beusedtodoingsth.习惯做某事45.runout(of)用完;用尽46.sothat以便47.so...that如此……以至于…48.beincontrolof掌管;管理49.inadifficultsituation在闲境屮50.keepondoingsth.继续或坚持做某事51.makeadecision做出决定52.takerisks冒险53.giveup放弃二、重点句型1.What’sthematter?What’sthematterwithyou?=What’sthetroublewithyou?=What’swrongwithyou?你怎么了？2.Whatshouldshedo?她该怎么办呢？ShouldItakemytemperature?我应该量一下体温吗？主语+should/shouldn’t+动词原形...①Youshouldliedownandrest.你应该躺下休息一会儿。②Youshouldn’tgooutatnight.你晚上不应该出去。3.Doyouthinkitcomesfromanewspaperorabook?你认为它是来自报纸还是书呢？4.IthinkIsatinthesamewayfortoolongwithoutmoving.我想我以同样的姿势一动不动地坐得太久了。5.ShesaidthatthemanhadaheartproblemandshouldgotothehospitalUnit2I’llhelptocleanupthecityparks.一、重点短语1.Clean-UpDay清洁日2.anoldpeople’shome养老院3.helpoutwithsth.帮助解决困难4.usedto曾经……；过去_5.carefor关心;照顾6.thelookofjoy快乐的表情7.attheageof在岁时8cleanup打扫(或清除)干净9.cheerup(使)变得更高兴;振雀10.giveout分发;散发11.comeupwith想出；提出12.makeaplan制订计划13.makesomenotices做些公告牌14.tryout试用;试行15.workfor为…工作；为….效力16.putup建造;举起;张贴17.handout分发;散发;发给18.callup打电话;召集19.putoff推迟;延迟20.forexample比如；例如21.raisemoney筹钱;募捐22.takeafter与相像;像23.giveaway赠送;捐赠24.fixup修理;修补;解决25.besimilarto与……相似26.setup建立;设立27.disabledpeople残疾人28.makeadifference影响;有作用29.beableto能够30.after-schoolreadingprogram课外阅读项目二、重点句型1.Theboycouldgiveoutfoodatthefoodbank.这个男孩可以在食品救济站分发食物。2.Clean-UpDayisonlytwoweeksfromnow.清洁日离现在仅仅两周的时间。3.HevolunteersatananimalhospitaleverySaturdaymorning.每周六上午，他都在一'家动物医院当志愿者。4.Lastyear,shedecidedtotryoutforavolunteerafter-schoolreadingprogram.去年，她决定去参加一个课外阅读项目的志愿者的选拔。5....youcanseeintheireyesthatthey’regoingonadifferentjourneywitheachnewbook.……从他们的眼睛里你可以看到他们正在进行每本不同的新书之旅。6.Iwanttoputoffmyplantoworkinananimalhospitaluntilnextsummer.我想把我在动物医院工作的计划推迟到明年夏天。7.Mostpeopletodayareonlyworriedaboutgettinggoodjobstomakelotsofmoney.现在的大部分人只是为找一份能挣许多钱的好工作而着急。8.YouhelpedtomakeitpossibleformetohaveLucky.在你的帮助下，我才有可能拥有“幸运儿”。Unit3Couldyoupleasecleanyourroom?一、重点短语1、 gooutfordinner出去吃饭2、stayoutlate在外面待到很晚3、gotothemovies去看电影4、getaride搭车5、workon从事6、finishdoingsth.完成做某事7、cleanandtidy干净整洁8、dothedishes洗餐具9、takeouttherubbish倒垃圾10、foldyour/theclothes叠衣服11、 sweepthefloor扫地12、makeyour/thebed整理床铺13、cleanthelivingroom打扫客厅14、noproblem没问题15、welcomesb.欢迎某人16、comehomefromschool/work放学/下班回家17、throwdown扔下18、sitdown坐下19、comeover过来20、takesb.forawalk带某人去散步21、allthetime一直;总是22、allday/evening整曰/夜23、dohousework做家务24、shoutback大声回应25、walkaway走开26、sharethehousework分担家务27、acomfortablehome一个舒适的家28、insurprise惊讶地29、getsomethingtodrink拿点喝的东西30、watchoneshow观看一个节目31、hangout闲逛32、passsb.sth.把某物传给某人33、lendsb.sth.把某物借给某人34、getsth.wet使某物弄湿35、hatetodosth.讨厌做某事36、dochores做杂务37、helpsb.(to)do/withsth•帮助某人干某事38、bringatent带顶帐篷来39、buysomesnacks买些小吃40、gotothestore去商店41、invitesb.toaparty邀请某人参加聚会42、makesb.dosth.使某人做某事43、enoughstress足够的压力44、awasteoftime浪费时间45、inorderto为了46、getgoodgrades取得好成绩47、minddoingsth.介意做某事48、dependon依赖;依靠49、developchildren’sindependence发展孩子的独立性50、lookafter/takecareof照顾；照看51、doone’spartin(doing)sth.做某人分内的事二、重点句型1.Couldyouplease…..dosth.?Couldyoupleasecleanyourroom?你能整理一下你的房间吗？2.Ihavetodosomework.我必须干些活。3.CouldI+dosth.?CouldIuseyourcomputer?我可以用一下你的电脑吗？4.Shewon’tbehappyifsheseesthismess.如果她看到这样乱七八糟的话，她会不高兴的。5.Foroneweek,shedidnotdoanyhouseworkandneitherdidI.整整一周，她什么家务活都不干了，我也一样。6.MymomcameoverassoonasIsatdowninfrontoftheTV.我一在电视机前坐下，我妈妈就过来了。7.hate+(todo/doing)sth.Ihatetodochores.Unit4Whydon’tyoutalktoyourparents?一、重点短语1.havefreetime有空闲时间2.allowsb.todosth.允许某人做某事3.hangoutwithsb.与某人闲逛4.after-schoolclasses课外活动课5.getintoafightwithsb.与某人吵架/打架6.untilmidnight直到半夜7.talktosb.与某人交谈8.toomany太多9.studytoomuch学得过多10.getenoughsleep有足够的睡眠11.writesb.aletter给某人写信12.callsb.up打电话给某人13.surprisesb.令某人惊讶14.lookthrough翻看15.beangrywithsb.生某人的气16.abigdeal重要的事17.workout成功地发展;解决18.getonwith不11睦相处；关系良:19.fightalot经常吵架/打架20.hangover笼罩21.refusetodosth.拒绝做某事22.offertodosth.主动提出做某事23.sothat以便24.mindsb.doingsth.介意某人做某事25.allthetime一直26.infuture今后27.makesb.angry使某人生气28.worryaboutsth.担心某事29.copyone’shomework抄袭某人的作业30.beoneself做自己31.familymembers32.spendtimealone独自消磨时光33.givesb.pressure给某人施压34.haveafightwithsb.与某人吵架35.competewithsb.与某人竞争36.freetimeactivities业余活动37.getbettergrades取得更好的成绩38.giveone’sopinion提出某人的观点39.learnexamskills学习应试技巧40.practicesports体育训练41.causestress造成压力42.cutout删除二、重点句型1.IstudieduntilmidnightlastnightsoIdidn’tgetenoughsleep.我昨晚学习到半夜所以睡眠不足。2.Whydon'tyouforgetaboutit?你为什么不忘掉它呢？3.Althoughshe’swrong,it’snotabigdeal.虽然她错了,但这并不是什么大事儿。4.Heshouldtalktohisfriendsothathecansayhe’ssorry.他应该跟朋友谈谈以便他能说声对不起。5.Maybeyoucouldgotohishouse.也许你可以去他家。6.IguessIcould,butIdon’twanttosurprisehim.我想我可以.但我不想让他感到惊讶。Unit5Whatwereyoudoingwhentherainstormcame?一、重点短语1.makesure确信;确认2.beatagainst...拍打……3.fallasleep进人梦乡；睡着4.diedown逐渐变弱；逐渐消失5.wakeup醒来6.inamess一团糟7.break...apart使……分离8.intimesofdifficulty在困难的时候9.atthetimeof当时候10.gooff(闹钟)发出响声11.takeahotshower洗热水澡12.missthebus错过公交车13.pickup接电话14.bring...together使……靠拢15.inthearea在这个地区16.misstheevent错过这个事件17.bythesideoftheroad在路边18.theAnimalHelpline动物保护热线19.walkby走路经过20.makeone’swayto.•.在某人去……的路上21.hearthenews听到这个消息22.,importanteventsinhistory历史上的重大事件23.,forexample例如24.,bekilled被杀害25.,over5050多(岁）26.aschoolpupil一个小学生27.ontheradio通过广播28.,insilence沉默;无声29.,morerecently最近地;新近30.,theWorldTradeCenter世贸中心31.,takedown拆除;摧毁32.,havemeaningto对……有意义33.,rememberdoingsth.记得做过某事34.,atfirst首先;最初二、重点句型1.—Whatwereyoudoingateightlastnight?昨晚8点你在干什么？—Iwastakingashower.我在洗淋浴。2.Whenitbegantorain,Benwashelpinghismommakedinner.当开始下雨的时候，本正在帮他妈妈做晚饭。3.—WhatwasJennydoingwhileLindawassleeping?琳达在睡觉的时候，珍妮正在干什么？—WhileLindawassleeping,JennywashelpingMarywithherhomework.琳达在睡觉的时候，珍妮正在帮玛丽做作业。Unit6Anoldmantriedtomovethemountains一、重点短语1.workondoingsth.致力于做某事2.assoonas一……就…3.onceuponatime从前4.continuetodosth.继续做某事如此……以至于…5.makesth.happen使某事发生6.trytodosth.试图做某事7.thejourneytosp.之旅8.tellthe/astory讲故事9.puton穿上10.alittlebit有点儿11.keepdoingsth.坚持做某事12.giveup放弃13.insteadof代替;反而14.o变成15.getmarried结婚16.themaincharacter主要人物；主人公17.atothertimes在另外一些时候18.beableto能;会19.comeout(书、电影等)出版20.becomeinterestedin.对……感兴趣21.walktotheotherside走到另一边去22.afairytale一个神话故事23.therestofthestory故事的其余部分24.leavesb.todosth.让某人做某事25.makeaplantodosth.筹划/计划做某事26.gotosleep去睡觉27.leadsb.tosp.把某人领到某地28.getlost迷路29.changeone’splan改变计划30.tellsb.todosth.叫某人做某事31.inthemoonlight在月光下32.findone’swayhome找到某人回家的路33.thenextday第二天34.sendsb.tosp.派某人去某地二、重点句型1.Whatdoyouthinkabout/of...?SowhatdoyouthinkaboutthestoryofYuGong?你觉得愚公的故事怎么样？2.Itdoesn’tseemadj.todosth..Itdoesn’tseemverypossibletomove-amountain.把一座山给移掉好像不太可能。3.Thisisbecause...Thisisbecausehecanmake72changestohisshapeandsize,turninghimselfintodifferentanimalsandobjects.这是因为他会根据他的形状和大小，做出72种变化，可以将自己变成不同的动物或东西。…so…that+从句Sometimeshecanmakethesticksosmallthathecankeepitinhisear.有时候，他能够让他的金箍棒变得很小，以至于可以放在耳朵里。5.Ittakesb.sometimetodosth..Becausetheyweresobigthatittookalongtimetowalktotheotherside.这些（山）太高了，他们要花好长时间才能翻越过去。6.…not....util十从句Don’teatituntilyougettotheforest.你们到达森林之后才能吃。Unit7What’sthehighestmountainintheworld?一、重点短语1.asbigas与……一样大2.oneoftheoldestcountries最古老的国家之一3.feelfreetodosth.随意地做某事4.asfarasIknow据我所知5.man-madeobjects人造物体6.partof...的组成部分7.thehighestmountain最高的山脉8.intheworld在世界上9.anyothermountain其他任何一座山10.ofallthesaltlakes在所有的咸水湖中11.runalong跨越……12.freezingweather•冰冻的天气13.takeinair呼吸空气14.thefirstpeopletodosth.第一个做某事的人15.inthefaceofdifficulties面临危险16.giveupdoingsth.放弃做某事17.achieveone’sdream实现某人的梦想18.theforcesofnature自然界的力量19.reachthetop到达顶峰20.eventhough虽然;尽管21.atbirth在出生的时候22.beawake醒着23.runoverwithexcitement兴奋地跑过去24.walkintosb.撞到某人25.fallover摔倒26.takecareof照顾;照料27.everytwoyears•每两年28.cutdowntheforests砍伐林木29.endangeredanimals濒危动物30.fewerandfewerpandas大熊猫越来越少31.beindanger处于危险之中32.theimportanceofsavingtheseanimals拯救这些动物的重要性二、重点句型1.Itis-\~adj.+(forsb.)todosth.Itisalsoveryhardtotakeinairasyougetnearthetop.当你接近山顶时，连呼吸都会困难。2....isbecause...Oneofthemainreasonsisbecausepeoplewanttochallengethems