云南省陇川县第一中学高中英语Unit3Underthesea教案新人教版选修7[讲一讲]同学们在学习和使用名词性从句时要特别注意以下几点：1.注意连接词that与what的区别：that在引导名词性从句时，只起连接作用，不在从句中作任何成分；what在引导名词性从句时不仅起连接作用，而且在从句中充当主语、宾语、表语等。如：Seetheflagsontopofthebuilding?Thatwaswhatwedidthismorning.（what作did的逻辑宾语）Whatmakesthisshopdifferentisthatitoffersmorepersonalservices.（what引导主语从句，且在主语从句中作主语）2.注意连接词whether与if的区别：whether可引导所有的名词性从句，if一般只能引导宾语从句。在引导宾语从句时两者常可互换，但介词后的宾语从句只能用whether引导；此外，whether后可直接用ornot,if则不行。如：Thequestioniswhetherhewillacceptourinvitationandcometoourparty.（whether引导表语从句，一般不用if代替）Canyoutellmewhetherornotthetrainhasleft?（与ornot直接连用，只能用whether）3.注意名词性从句与定语从句的区别：名词性从句相当于一个名词，在句中可以充当主语、宾语、表语等，而定语从句相当于一个形容词，在句中充当定语。有些连接词如that,which,where,when等，既可引导名词性从句又可引导定语从句；还有些连接词如what,whatever等，不能引导定语从句。如：Hepromisedtodoeverythingthathecoulddotohelpusout.(that引导定语从句)Hepromisedtodowhateverhecoulddotohelpusout.(whatever引导宾语从句)Thecoatisstillwhereyouhaveleftit.(where引导表语从句)Thecoatisstillintheroomwhereyouhaveleftit.(where引导定语从句)[练一练]I.下列各句均有一处错误，请指出并改正。1.Whatfashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect.2.Theywanttomakeitcleartothepublictheyaredoinganimportantandnecessaryjob.3.Theproblemiswhyyoucan’tforceeveryonetolistentoyou.4.Noonecantellexactlythatmanwilllooklikeinamillionyears.5.Ijusthavenoideathathehasbeensoexcitedthesedays.6.Policewerecalledintofindoutthatcausedthebigfire.7.Itisrequiredweshouldhaveaclassmeetingtodiscusstheproblem.8.Thedoctorsreallydoubtthatmymotherwillrecoverfromtheseriousdiseasesoonornot.II.根据括号内的提示，将下列句子补充完整。1.___________________(她和同学们相处得很好)isknownbyusall.2.Theproblemis___________________(吸烟者没有烟抽便过不下去).3.Everyonecouldseewhatwashappeningand___________________(她很着急).4.Paulconsidered___________________(他被哈佛大学录取是幸运的).5.___________________(你应该对老师讲的课做好笔记，这很重要。)
