高中英语人教版必修三unit4单词，短语，重点句型梳理

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1、Unit4单词、短语.重点句型梳理重点单词puzzle【课文原句】Howlifebeganonearthisoneofthebiggestpuzzlesthatscientistsfoundhardtosolve.（Page27）【点拨】puzzlen.不解之谜；疑问。如:Whatthesignstandsforhasalwaysbeenapuzzle・【拓展】请看下面例句，注意puzzle及其派生词在句中的词性、意义和用法。Thecompanyhasproducedmanybooksofpuzzlesforchildren.（n.谜；智力游戏）

2、We'restillpuzzledabouthowtheaccidentcouldhavehappened,（adj.迷惑不解的）Theteacherisexplainingthepuzzlingproblemtohisstudents,（adj.令人费解的;莫名其妙的）Shelistenedwithapuzzledexpressiononherface.（adj.迷惑的；困惑的）【小试牛刀】将下列句子翻译成英文。1.生命是如何起源的至今还是个谜。2.令我不解的是她为什么要那样说。Key:1.Howlifebeganisstillapuzzle・

3、2.Whatpuzzledmeiswhyshesaidthat・经典短语intime【课文原句】Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth，satmosphere・（Page25）【点拨］intime（forsth./todosth.）意为"及时；来得及"。如：Shewillbebackintimetopreparedinner.【拓展】★intime经过一段时间以后；迟早；终于。如：Theylearnedtofac

4、ethesituationintime.★与time有关的常用搭配还有：ontime按时forthetimebeing暂时atonetime曾经，一度atatime每次，一次attimes有吋；偶尔atthesametime同吋；然而allthetime一直，始终【高考链接】从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。1.1don'tthinkTIIneedanymoneybutTIIbringsome.(2000NMET)A.atlastB.incaseC.onceagainD.intime2.Idon'tmindpickingu

5、pyourthingsfromthestore.,thewalkwilldomegood.(2004全国卷I)A.SoonerorlaterB.StillC.IntimeD.BesidesKey:l.B2.Dprevent...from【课文原句】Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.(Page26)【点拨】prevent...from在句中的意思是“阻止；制止如：Wemustpr

6、eventthewaterfrombeingpolluted.Heispreventedbylawfromholdingalicense.【拓展】在这个短语中‘prevent可用stop或keep代替。用prevent或stop时，在主动句中可省略from,但被动句中不可省略;用keep时不可省略from0keep...doing则意为"使处在状态中“。如:Youcan'tstop/preventpeople(from)sayingwhattheythink.Lucyinjuredherbacksoshewasprevent-ed/kept/st

7、oppedfromplayingintomorrow'sgame.Iamsorrytohavekeptyouwaitingforsuchalongtime.★与prevent...from形式接近的短语还有:protect...from表示”保护不受伤害"。如：Youhadbetterwearsunglassestopro-tectyoureyesfromthesun.【小试牛刀】从A、B、C.D四个选项中,选出可以填入空白处的最佳选项。1.Thegovernmentistryingtofindthebestwayticketpricesfrom

8、A.preventing;risingB.toprevent;risingC.preventing;raisingD.toprevent