人教版九年级Unit2知识点详解

（一）课文详解1、Whatagreatday!(P9)本句是由what引导的感叹句。其结构为：What+a/an+形容词+可数名词的单数形式（+主语+谓语+其他）Eg:Whatanewbike(itis)!Whatabeautifulgirl!2、ButIguessitwasalittletoocrowded.(P9)1)这是一个含有宾语从句的复合句，Iguess为主句，itwasalittletoocrowded为省略了引导词that的宾语从句。在复合句中，当主句为一般现在时时，宾语从句可根据其具体情况使用任意适当的时态。Eg:Iguessheisapoliceman.IhearshewenttoBeijingbyplaneyesterday.2)crowdedadj.“拥挤的”。常用短语：becrowdedwith……“被挤满”。crowdv.“拥挤”Eg:Theshopnearmyhouseisalwayscrowdedwithpeople.Hundredsofpeoplecrowdedintothechurch.3、Billwonderswhetherthey’llhavezongziagainnextyear.(P9)1)wonder此处用作既无动词“想知道”，相当于wanttoknow.wonder在不同的句式中表达的意思不相同：后接who,what,why等连接词引导的宾语从句及“疑问词+动词不定式”结构时，意为“想知道”Eg:Iwonderwhothatboyis.后接if或whether引导的宾语从句时，表示一种委婉的请求或疑问Eg:IwonderifIcoulduseyourmobilephone.后接that引导的宾语从句以及动词不定式短语时，表示“对…感到惊讶”Eg:Iwondertoseeherlookingsocheerful.wondern.奇迹，奇观wonderfuladj.壮观的，奇妙的，精彩的eg:WhataretheSevenWondersintheworld?WehadawonderfultimeintheparklastSunday.2)whether连词，“是否，是不是”，引导宾语从句，相当于if。Eg:Hewonderswhether/ifitwillbefinetomorrow.辨析:whetherif二者都可以引导宾语从句，意为“是否”，一般情况下可以互换。Eg:Idon’tknowwhether/ifshecanworkouttheproblem.二者在引导宾语从句时，whether可直接与ornot连用，而if不可以Eg:Idon’tknowwhetherornotIshouldgo.if可以引导条件状语从句，意为“如果”，而whether不可以Eg:Ifitdoesn’traintomorrow,wewillgocamping.if可以用于虚拟语气中，而whether不可以Eg:IfIwereabird,Iwouldflyinthesky.4、BillandMarybelievethatthey’llbebacknextyeartowatchtheraces.(P9)believe此处用作及物动词“相信、认为”。其后既可以直接接名词、代词作宾语，也可以跟that等引导的宾语从句，还可以用believesbtodosth的形式Eg:Idon’tbelieveyou.Ibelievethathecanwinthematch.Ibelievehimtobeanhonestman.当believe后跟宾语从句且主句为第一人称时，它的否定形式与think的用法相同，“否定在主句，翻译在从句”Eg:Idon’tbelieveheknowsthatplace.我认为他不知道那个地方。5、WuMingwenttoSingapore/HongKong/Macaoforhisvacation.(P10)goto….fora/one’svacation“去…度假”，for表示为了，vacation通常指一次性休假，英式英语常用holiday.Eg:HewenttoBeijingforhisvacation.HerparentsareonvacationinHawaii.goforavacation“去度假”相当于takeavacation，说明度假还没有开始，在计划当中Eg:IamgoingforavacationtoBeijing.goonvacation“在度假”说明度假正在进行Eg:IamgoingonavacationinBeijing.6、I’mgoingtoChiangMaiintwoweeks.(P10)intwoweeks“两周后”，结构为“in+一段时间”，表示“在….之后”，常用语一般将来时，对起提问用howsoonEg:Iwillfinishtheworkintwohours.in以现在为起点，表示将来一段时间以后，常用语将来时态的句子中。Eg:Shewillbebackinthreeweeks.after以过去为起点，表示过去一段时间以后，常用语过去时态的句子中，在某个特定的时间以后，after也可用语将来时态的句子中。Eg:HestartedonSundayandarrivedinHongKongafterthreedays.Iwillarriveafterfouro’clock.7、Iwonderifit’ssimilartotheWaterFestivaloftheDaipeopleinYunnanProvince.(P10)1)Iwonderif…是一个表示请求允许的交际用语，常用来询问对方是否允许自己做某事。肯定回答用：Sure，goahead./Ofcourse./Sure.否定回答用：I’msorry,but…../I’mafraidnot./You’dbetternot.2)besimilarto“与…相似”。similaradj.“相似的”无比较级。Eg:Acatissimilartoatigerinmanyways.Catsandtigershavesimilarfeatures.8、ChinesepeoplehavebeencelebratingMid-AutumnFestivalandenjoyingmooncakesforcenturies.(P11)1)havebeencelebrating是现在完成进行时。结构为“have/hasbeen+动词的现在分词”。现在完成进行时表示动作在迄今为止的一段时间内曾经连续进行或目前仍在继续并有可能一直继续下去，强调动作持续进行的状态。Eg:HehasbeenlearningEnglishforfiveyears.Ihavebeenwritingabook.2)forcenturies“数个世纪以来”相当于sincecenturiesago.for与表示一段时间的状语连用，表示“（做某事）多长时间了”，常用语现在完成（进行）时，表示过去某时开始，持续到现在的动作或状态，for所在句子中的动词必须是延续性的动词。对“for+时间段”提问用howlongEg:I’vebeenlivinginChinaforfiveyears.I’veknownherformorethantwentyyears.9、AfterHouYishotdowntheninesuns,agoddessgavehimmagicmedicinetothankhim.(P11)1)shootv.投篮、射击。过去式和过去分词为shot。shootdown“射下，击落”。shoot指“击中、射死”强调射击的结果，shotat朝某人或某物射击，不强调是否射中，而强调射击的动作。Eg:Heshottwogoalsinthegame.Heshotawildduck.Myfathershotatarabbit,buthedidn’tshootit.2)givesbsth=givesthtosb“给某人某物”Eg:Wegavehersomeflowersforherbirthday.=Wegavesomeflowerstoherforherbirthday.注：当直接宾语和间接宾语都是代词时，只能用givesthtosb结构。Eg:Pleasegiveittome.3)medicineun.“药”。常用短语：take/havethemedicineEg:Takethemedicinethreetimesaday.10、Whoeverdrankthiscouldliveforever,andHouYiplannedtodrinkitwithChang’e.(P11)1)whoever代词“无论谁，不管谁”相当于nomatterwho,引导让步状语从句，Eg:I’lltakewhoeverwantstogo.Youcan’tgo,whoeveryouar.2)planv.“计划，打算”过去式和过去分词为planned,现在分词为planning，常用短语：plantodosth.。plan也可用作可数名词,常用短语有：makeaplan/makeplantodosth.makeaplanforEg:Mr.Brownplanstogofishingafterwork.Heismakingaplanforthewintervacation.TheyplannedtogotoEnglandforvacation.=TheymadeaplantogotoEnglandforvacation.11、Shebecameverylightandflewuptothemoon.(P11)1)lightadj.“轻的”Eg:Modernvideocamerasarelightandeasytocarry.adj.“浅色的，少量的”Eg:Mylittlesonlikeslightblue.v.“点燃，点火”Eg:Thematchlightseasily.Hetookoutacigaretteandlitit.un.“光、光线”Eg:Thelightinheroomispoor.Iliketheroomwithgoodnaturallight.n.“电灯”Eg:Weneedthreenights.Couldyoubuythemforus?2)fly此处用作不及物动词“飞、飞行”。其过去式和过去分词分别为：flew,flown,现在分词为flying,第三人称单数形式为flies.flyup“飞起来”Eg:MyuncleflewfromHongKongtoNewYorkyesterday.Thebirdflewupfromthegrass.12、HowhewishedthatChang’ecouldcomeback.(P11)wish及物动词“希望”。wish后能接双宾语，wishsbsth,而hope不能Eg:Iwishtohaveaholiday.Wewishtoliveinabighousewithabiggarden.IwishthatIcouldflylikeabird.Wewishyouahappynewyear.13、Afterthis,peoplestartedthetraditionofadmiringthemoonandsharingmooncakeswiththeirfamilies.(P11)1)thetraditionof....“....的传统”。tradition既可作可数名词也可作不可数名词。其形容词形式为：traditional.Eg:TheyvalueChinesetradition.2)admire及物动词“欣赏，钦慕”。常用结构：admiresb./sthadmiresb.for(doing)sthEg:Iadmiredhimverymuch.Weadmireherforherbravery.14、Asaresult,Chan