八年级下册第八单元复习讲义重点单词saveyard(名词码)rubbish(garbagelitter)abitof(alittle/afew)pollute(pollution)bag(plasticbag)little(lessleast)many/much（moremost）leak(leaky)waste(名词废物，废品)litre(liter)fix(mend/repair)sort(sort…into….)metalheaven(god)weight(weigh)truckobject(名词宾语)picnictear(名词眼泪)use(reusereusable)bad(worse/worst)seat重点短语abitof(alittle/afew)sort…into…cleanuppickupfinishdoingsthgettoworkthrowawaytakeout(takeoff脱下/起飞)turnoff(turnout/shutdown把….关上)haveafit(大惊，大怒)Goodheavenstakeawalk=haveawalk(goforawalk/walks)takeatripdowith(疑问词要用What)dealwith(疑问词要用How)leakoutencouragesbtodosthmakeabigdifferenceto…(对……起作用，发生影响)重点句型Itwouldtaketoolong.Weshouldfinishcleaninginanhour!Thatafternoon,Jennyexplainstheplantotheclass.Let’sgettowork!Howmuchdoyouthrowawayafterlunch?Environmentclubsencouragestudentstobringtheirlunchesinreusablebagsanddishes.That’severythingthatisn’tglass,metal,plasticorpaper.Abouttenpercentofpackagingisplastic.Oneofthewheelsisbroken.10,It’sonlyalittlebitbroken.11,Theyonlyneedtothrowawayasmallbagfullofgarbage!12,Wewillseewherethecityworkerssortallofourgarbageforrecycling.13,Infact,allofuscanmakeasmallchangeinthewaywelive.14,Itwillmakeabigdifferencetoourenvironment.15,Turnofflightswhenleavingaroom.交际用语提供帮助CanIhelpyou?MayIhelpyou?WhatcanIdoforyou?IsthereanythingIcandoforyou?5，Yes,please.6,Thanksforyourhelp.7,Thankyouallthesame.经典语法宾语从句在复合句中用作宾语的从句叫宾语从句。1．语序无论主句是陈述句还是疑问句，宾语从句都必须使用陈述语序，即“主句＋连词＋宾语从句（主语＋谓语＋……）”句式。根据连接词在从句中所担任的不同成分，可分为以下四种：1）连接词＋谓语。连接词在从句中作主语。常见的连接词有：who，what，which等。如：Couldyoutellmewhoknowstheanswer，please？你能告诉我谁知道答案吗？Thesmallchildrendon'tknowwhatisintheirstockings．这些小孩子不知道袜子里有什么东西？2）连接词＋名词＋谓语。连接词在从句中作主语的定语。常见的连接词有：whose，what，which，howmany，howmuch等。如：Heaskedwhosehandwritingwasthebestinourclass．他问我们班上谁的书法最好。Theteacheraskedushowmanypeopletherewereintheroom．老师问我们房间里有多少人。3）连接词＋主语＋谓语。连接词在从句中作宾语、状语或表语。常见的连接词有：who（m），what，which，howmany，howmuch，when，why，how，where，if／whether（在句中不充当任何成分）等。如：Hehasn'tdecidedifhe'llgoonatriptoWuxi．他还没决