英语人教版讲解选修六m6u4language points

1.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencompared

toothernaturalchanges.Whencomparedto=whenitiscomparedto(with)状从的省略.条件：1).主从句主语一致且从句中含be动词时可省略状从中的主语和be动词。如：过马路时要四下看看Lookaroundwhile(youare)crossingtheroad麦蒂的表现比预料的要好McGradyperformsbetterthanexpected

他张了张嘴，好像有话要说Heopenedhislipsasif(hewere)tospeak.2)当从句中的主语是it,谓语动词又含有系动词be是，可以把it和系动词be一起省略。如果没必要，你最好不要查字典Unless(itis)necessary,you’dbetternotrefertothedictionary.如果有可能，我想到月球探险Ifpossible,I’dliketoexplorethemoon.2.Thereisnodoubtthattheearthisingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球正变得更加暖和。全球变暖是人为的，而不是随意的自然现象毫无疑问，每个人都是独一无二的Thereisnodoubtthateveryoneisunique.我怀疑他是否考试作弊Idoubtwhetherhecheatedintheexam.我不怀疑他会赢得这场比赛Idon’tdoubtthathewillwintherace.3.Somescientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.类似表达：Sb.advocates/argues/isinfavoroftheviewthat…(同位语从句)连词that引导同位语从句时，应在某些抽象名词之后，如：fact,hope,desire,thought,suggestion,idea,news,problem,possibility等，对前面的名词其补充说明作用。that不做成分1.-----It’sthirtyyearssincewelastmet.----ButIstillrememberthestory,believeitornot,_____wegotlostonarainynight.A.whichB.thatC.whatD.when2.Couldyouimaginethesituations___willappearintheworkingworld?A.whereB.whenC.thatD.whatBc4.Withoutthe‘greenhouseeffect’.Theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.相当于：Ifthereweren’tthe‘greenhouseeffect’.Theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.要不是这场雪，我们就能打篮球了Without/Butforthesnow,wewouldplaybasketnow.5.Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup1)Itmeansthat…“it”:形式主语很可能周四济南要下雪Itisverylikely/probablethatasnowwillfallonJinanonThursday.==AsnowisverylikelytofallonJinanon..2)把。。。留存/储存(holdandkeepgas,water.Etcsothatitcanbeusedlater)Solarpanelscantrapthesun’sheat太阳能电池板能储存太阳的能量1.Tenminersweretrappedunderground2.Thepolicetrappedtheterroristsataroadblock.3.Iwastrappedintosigningaconfession.(供词)4.Aboyhadhisfingerstrappedinthedoor.trap的其他意思困使陷于罗网，把（某人）逼入困境诱骗，诱使被夹住；被压扁6.Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.1)强调句的一般疑问句Itwasin1939thattheSecondWorldWarbrokeout.Wasitin1939thattheSecondWorldWarbrokeout?2)强调句的特殊疑问句Whowasitthatbrokethewindow?3)强调句在复合句中做某一成分Tellmewhoitwasthatbrokethewindow.1）区分强调句与其他从句ItwasonOct.1st,1949_____ThePeople’sRepublicofChinawasfoundedItwasOct.1st,1949_____ThePeople’sRepublicofChinawasfounded2)强调句型与Itis+时间+since…Itwastwoyearsago______IbegantolearnEnglish.Itistwoyears______IbegantolearnEnglish.thatwhenthatsince3)Itwon’tbelong_________Imeetyou.4)Itisthefirsttime________I’vebeentoHongkong.beforethat7.It’sOKtoleaveanelectricalapplianceon

solongasyouareusingit.Ifnot,turnitoff!1.我们还可用ifnot/so/any/ever代替上文.如：你去过济南吗？如果去过的话，济南的泉水一定留给你深刻的印象HaveyoueverbeentoJinan?Ifever,youmustbedeeplyimpressedwithspringsthere.明天得早起。如果不早起，你就要迟到了Getupearlytomorrow.Ifnot,you’llbelate-ArethereanybooksaboutEnglishlearning?--Ifany,thereareonlyafewleavetheelectricalapplianceonLeave+宾语+宾补:使（