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1、高二英语名词性从句知识精讲一.本周教学内容：名词性从句二.教学目标：掌握名词性从句的分类及用法三.教学重点与难点：主语从句的用法及和同位语从句的区别四.具体内容：名词性从句包括：主语从句宾语从句同位语从句表语从句它们在复合句中的作用相当于名词，因此这四种从句统称为名词性从句。名词性从句作用关系词例句主语从句在复合句中作主句的主语连词：that,whether代词：who,what,which副词：when,where,how,whyThemostofthesearenowthreatenedandmaydisappearisaseriousmatter
2、thepeopleinBritain.表语从句在复合句中作主句的表语连词：that,whether,asif代词：who,which,what副词：when,where,how,whyTheresultofsomuchFrenchinfluencewasthattheEnglishlanguageendedupwithmanyFrenchwordssuchastable,animalandage.宾语从句在复合句中作主句的宾语连词：that,whether,if代词：who,what,which副词：when,where,how,whyTheyreal
3、isethatitisofgreatvaluetorecordandteachthemtotheyoungergeneration.同位语从句一般跟在某些名词(fact,idea,promise,news）后面，用以说明或解释前面的名词连词：that连接副词：how,when,whereTheideathatEnglandstandsforFishandChips,theSpeakers’CornerandtheTowerofLondonispast.Whysheissoexcitediscleartousall.Thathehadmetakindma
4、nhelpedhimalot.ThehistorybookiswhatI’mlookingfor.Itlooksasifit’sgoingtorain.Thefactthathedidn’tpasstheexamsurprisedme.Ihavenoideawhobrokethewindow.（一）主语从句1.引导主语从句的词很多，连词只起连接作用，不充当句子成分；连接代词，连接副词在句中充当一定的句子成分。2.that从句作主语时，常用it作形式主语。常见的句型是：Itis+adj./n.+that从句；Itis+过去分词（said,hoped,re
5、ported,known,believed）+that从句。Thathehasgoneabroadforfurthereducationiscleartousall.=Itiscleartousallthathehasgoneabroadforfurthereducation.3.由what引导主语从句时本身有词义，意为“所……的”，相当于“thethingthat”，“allthat”,在从句中充当主语、宾语、表语，而且不能省略。Whatseemseasytosomepeopleseemsdifficulttoothers.4.主语从句中如果不缺少任
6、何成分，则用从属连词that连接主从句。Thatheisabletopasstheexamisclear.5.在下列名词性从句中只能用whether,不能用if（1）介词后面的宾语从句中（2）主语从句和表语从句不定式前（3）动词discuss后的宾语从句中（4）后面紧跟 ornot时（5）由if引导的宾语从句容易产生歧义时6.主语从句的语序为陈述句语序。主语从句作主句为与动词一般用单数形式。Whentheywillstarthasn’tbeendecided.（二）同位语从句：1.常跟在fact,idea,thought,order,suggestio
7、n,news,truth,hope等后面，用以说明或解释前面的名词。2.that在从句中没有意义，只起连接作用。Thatismysuggestionthattheweshouldgothatway.3.that引导完整句子，具有同为性质；that引导不完整句子，构成定语从句。Aplaneisamachinethatcanfly.Givehimthebookthathelikes.Hemadeasuggestionthatwegooutingthisspring.（三）表语从句1.在联系动词后。Thatiswherehewasborn.2.由that引导
8、的从句作表语，说明一种情况。Hissuggestionisthatweshouldtryour
