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第1页广东省广州市七下U4复习【Part17下Unit4详细讲解】一、重点单词及短语Unit4中文英文中文英文拯救v.家具n.松树n.想像v.讨论v.疾病n.树枝n.挖v.根n.洞n.与...做斗争v.搬v.反对prep.容器n.例子n.吸收有害的adj.来自气体n.例如产生v.确切地说氧气n.环顾四周主要的adj.由...制成方便的adj.数以百万计的对...有好处二、重点语法现在进行时1.定义：现在进行时表示现在或当前一般时间正在进行的动作。2.构成：肯定句式：主语+be(am,is,are)+现在分词+其它.否定句式：主语+be(am,is,are)+not+现在分词+其它.一般疑问句：Be(am,is,are)+主语+现在分词+其它？特殊疑问句：疑问词+be(am,is,are)+主语+现在分词+其它？【注意：对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，要根据实际情况回答。】3.时间状语：可用来表示现在进行时的时间状语，常用的有：now,thisweek,atthismoment,rightnow,thesedays等；或者告诉你一个准确的现在时间，或者用look,listen提醒听者注意正在发生的事。例如：Theyareplayingbasketballnow.现在他们正在打篮球。Listen!SheissinginganEnglishsong.听，她正在唱英语歌。Lookatthepicture.Thechildrenareflyingkitesinthepark.看这幅图。那些孩子正在公园放风筝。Wearemakingmodelplanesthesedays.这些天我们在做飞机模型。It's6:30now.Iamgettingup.现在是6：30.我正在起床。Hurryup!Yourmotheriswaitingforyou.快点！你妈妈正在等你。4.动词-ing的变化规则：1）一般情况下直接在动词后面+ing(例：sleep+ing变sleeping)2）以不发音的e结尾的动词，去掉e再+ing(例：bite-e+ing变biting)3）以重读闭音节结尾的词，要双写尾字母再加ing（例：swim+m+ing=swimmingsit+t+ing=sitting)4）以ie结尾的重读闭音节，变ie为y+ing（有3个：lying—lie,dying―dietying―tie这些以ie结尾要去e再把i变y再加ing。）5）结尾为c且c读作/k/时，在结尾加k再加ing,如picnic-picnicking考点模拟：1.Look!Peter________TVhappily,buthisparentsarebusyinthekitchen.第2页A.iswatchingB.watchesC.watchedD.willwatch2.—MayIspeaktotheprincipal?—Sorry,he_______ameetingnow.CanItakeamessage?A.ishavingB.hadC.hasD.willhave3.WhereisSally?Hermother_______forhereverywhere.A.looksB.lookedC.islookingD.waslooking4.—Dad_____forParistomorrow.—Really?Let’sgoandaskhimtobringbacksomepresentsforus.A.aregoingtoleaveB.isleavingC.leftD.leaves5.Listen!________you_________someonecrying?A.Do;hearB.Are;hearingC.Did;hearD.Will;hear6.—Canyourbrothermakeamodelairplane?—Yes,theseweekshe________anewschool.A.buildsB.isbuiltC.willbuiltD.isbuilding7.—Sam,comedownstairs,please.Ineedyourhelp.—Idon’tthinkIcan,mum.I_______onthephone.A.talkB.talkedC.talkingD.amtalking三、巩固练习1.语音知识A.找出下列单词中划线部分的发音与其他不同的单词。1.A.skateB.skyC.taskD.skirt2.A.airportB.tickC.testD.step3.A.pointB.spreadC.pressD.crisp4.A.carryB.pineC.flyD.diet5.A.againstB.rainC.containerD.remainB.从下列选项中找出重音与其他不同的一项。6.A.helpfulB.rescueC.towelD.discuss7.A.diseaseB.addressC.perfectD.prefer8.A.finishB.greetingC.majorD.produce9.A.oxygenB.exampleC.anywhereD.probably10.A.appearB.programmeC.patientD.bottom2.单项选择1.Besilent!Someone_________!Canyouhearit?A.singsB.sangC.issingingD.willsing2.Theskytonightisreallybeautiful.Youcansee________starssmilingtoyou.A.3thousandsB.3thousandsofC.3thousandofD.thousandsof3.—Ican’tdecidewhichdresstobuy.Canyouhelpme?—Ofcourse!I_______theblueonebest!A.likesB.likeC.amlikingD.isliking4._________thehelpofJohn,littleTomstops________.Sowecanenjoyourbooksnow.A.With;cryingB.On;cryingC.With;tocryD.On;tocry5.Whenthereisafire,don’tforgettogetawettowelsothatyouwon’t_________toomuchCO2.A.getinB.makeinC.putinD.takein6.—Youarereallybusy!—Yes,Imustfinishtheworknextweek.I______forLondonnextweek.A.leaveB.amleavingC.leftD.leaving7.—Whathappenedtoyourmother?—Sorry,dad.Imadeher_________justnow.A.angryB.angrilyC.happyD.happily8.Thedeadteacherasked_______boystocleanthemeetinghall.第3页A.anumberB.thenumberofC.anumberofD.thenumberof9.Canyoubelievethathegetssomuchmoney________rubbish?A.withcollectingB.bycollectingC.ofcollectingD.bycollect10.—WillyougotowatchthenewmoviethisSunday?—I________gotowatchitifit________stopraining.A.don’t;won’tB.don’t;don’tC.won’t;won’tD.won’t;doesn’t3.语法选择AChineseman1CaiLuninventedpaperalmost2,000yearsago.Hemadepaper2wood.Hethenputallthepapertogetherandmadethepaper3abook.Nowwestillusewoodtomakepaper.Weusealotofpapereveryday.Ifwekeepon4somuchpaper,therewillnotbeanytreesleftontheearth.If5notrees,therewillbenopaper.Everyday,people6about2,800tonsofpaper.Weuse17treestomakeonetonofpaper.Thismeanswearecuttingnearly48,000treeseveryday.Sinceit7morethan10yearsforatreetogrow,wemuststartusing8papernow.Sohowcanwesavepaper?Wecanusebothsidesof9paper,especiallywhenwearemakingnotes.Wecanchoosedrinksinbottlesinsteadofthoseinpaperpackets.Wecanalsousecottonhankerchiefs(手帕)butnotpaperones.Whenwegoshopping,wecanusefewerpaperbags.Iftheshopassistantgivesusapaperbag,wecansaveitandreuseitlater.Everyonecanhelptosavepaper.Ifweallthinkcarefully,wecanhelp10trees.Butweshoulddoitnow,beforeitistoolate.1.A.callB.callsC.calledD.calling2.A.fromB.ofC.intoD.for3.A.fromB.ofC.intoD.for4.A.wasteB.towasteC.wastedD.wasting5.A.therewillbeB.thereareC.therewasD.therewasn’t6.A.takeinB.putonC.throwawayD.putaway7.A.spendsB.takesC.costsD.pays8.A.manyB.fewC.fewerD.less9.A.aB.apieceC.onepieceD.many10.A.protectB.protectsC.protectingD.toprotecting4.首字母填空1.Canyoui______________yourselftobeapresidentinthefuture?2.Evenhe,themostfamousdoctor,cannots______________theoldlady’slife.3.Smokingish______________toyourhealth.4.TheundergroundmakesGuangzhoupeople’slivesmuchmorec______________.5.Look!Heisdiggingah______________inthegarden.6.Heclimbedupthetreetogetbackthekiteamongtheb______________.7.Wejointhearmybecausewewanttof____________forourcountry.8.Beforewemoveinournewhouse,weneedtobuysomef______________.9.Let’sd______________howtoprotectthetreesinourdailylives.10.