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《新人教选修六 Unit 4 Global warmingLanguage points课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、人教课标版高二选修6Unit4英语课件Languagepoints1.Whatdoyouthinkgreenhousegasesdo?你认为温室气体有什么作用呢?▲本句中think后接了一个由what引导的宾语从句。但应注意的是:特殊宾语从句即当一般疑问句主句的谓语动词是think,believe,suppose,consider,imagine,guess和suggest等时,表疑问的词要放在主句前即句首。例如:[正]Whodoyouthinkwillwininthegame?[误]Doyouthinkwhowillwini
2、nthegame?当然一般情况下宾语从句的疑问词应放在主句之后,例如:[误]Whydoyouknowwecan’tcutdownthebigtree?[正]Doyouknowwhywecan’tcutdownthebigtree?2.Sohowhasthiscomeaboutanddoesitmatter?[考点]comeabout是不及物短语,意为“发生”。Pleasetellmehowtheaccident_____.Iamstillinthedark.(2005江西)A.camebyB.cameoutC.cametoD
3、.cameabout得到,获得出来,露出达到It’salready10o’clock.Iwonderhowit____thatshewastwohourslateonsuchashorttrip.(湖北2006)A.cameoverB.cameoutC.cameaboutD.cameup[点拨]根据句意“已经十点钟了。我不知道是怎么回事,这么短的路程她迟到了两个小时。”选C。comeover来访;comeout出来,出版;comeup出现,到来。3.Thereisnodoubtthattheearthisbecomingwar
4、merandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.Thereisnodoubtthat….Thereissomedoubtwhether….辨析:主句为肯定句时,doubt后使用连词whether。主句为否定句时,doubt后则使用连词that。e.g.:There’snodoubtthatonedayacurewillbefound.Thereislittledoubtthathewas
5、thekiller.[考点1]Thereisnodoubtthat...是固定句型,意为“毫无疑问……”,that引导的是同位语从句,用来进一步补充说明doubt的具体内容。[考例]Someresearchersbelievethatthereisnodoubt______acureforAIDSwillbefound.(广东2005)A.whichB.thatC.whatD.whether[点拨]根据固定搭配thereisnodoubtthat...可知选B。[考点2]itis...that...在此句中构成强调句型,强调的
6、是主语humanactivity。强调句型除谓语不能强调外,可强调主语、宾语或状语。[考例1]Itisnotwhoisrightbutwhatisright______isofimportance.(重庆2007)A.whichB.itC.thatD.this[点拨]根据强调句型的判断方法:将itis和that去掉后,此句成为Notwhoisrightbutwhatisrightisofimportance,是一个完整的句子,故此题是一个强调句型。[考例2]Idon’tmindhercriticizingme,but_____
7、_ishowshedoesitthatIobjectto.(江西2007)A.itB.thatC.thisD.which[点拨]去掉itis和that后,本句相当于...,butIobjecttohowshedoesit,是个完整的句子。故此句是it强调句型,被强调部分是宾语从句。4.amountof习惯用语:anamountof相当数量的;一些anyamount(of)任何数量(的);大量(的)beoflittleamount不重要;无价值n.数量largeamountsofmoney大量的金钱Inaninvoicethea
8、mountofmoneyshouldbewrittenbothinwordsandinfigures.发票上的钱数要用字和数码写出来。5.Withoutthe‘greenhouseeffect’,theearthwouldbeaboutthirty-threedegreesC
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