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1、SectionⅢGrammar-主语从句与表语从句 [语法初识]原句感知自主探究①ItisafactthatEnglishhasbecomeaninternationallanguage.②ThebigsurpriseoftheeveningwaswhenIwaselectedpromqueen!③Itneveroccurredtomethatyoucouldsucceedinpersuadinghimtochangehismind.④Whatsomepeopleregardasadrawbackisseenasaplusbymanyothers.⑤It'swellknown
2、thatAmericansarecompetitive.⑥Thatshehasbecameanartistmayhavebeenduetoherfather'sinfluence.⑦Whetherweshouldgothereremainsunknown.⑧Thefactisthatmorepeopleliveinthearea.⑨Helookedasthoughhewasill.⑩ThebookiswhereIputityesterday.(1)以上句中句②、⑧、⑨、⑩句中黑体部分均为表语从句，而句①、③、④、⑤、⑥、⑦句中黑体部分则为主语从句。(2)由句④和句⑥知，引导主语从
3、句时，what要在从句中充当句子成分，而that不作任何成分，只在语法上起连接作用。句⑦中的whether不作成分，但有意义，表示“是否”。(3)句①、③、⑤中，it用作形式主语，代替that引导的主语从句。(4)句②、⑩中的引导词when，where是副词，在从句中作状语，分别表示时间、地点。[语法剖析]语法点一主语从句1.主语从句的引导词连词种类连词从属连词that,whether连接代词what,who,whom,which,whose,whatever,whoever,whichever,whomever连接副词when,where,how,whyWhetherhe'll
4、visitourcompanyhasn'tbeendecidedyet.他是否参观我们的公司还没有决定。Thattheyaretruefriendsisobvious.很显然他们是真正的朋友。Whathedidreallysatisfiedusall.他做的事确实让我们大家满意。2．常以it作形式主语的句型(1)It＋be＋形容词(obvious,true,natural,surprising,possible,likely,certain,clear,probable,etc)＋that从句Itiscertainthatshewilldowellinthisexam.可以肯定她
5、这次考试一定会考得不错的。Itisquiteclearthattheearoftheelephantislikeahugefan.很显然，大象的耳朵像一把大扇子。(2)It＋be＋名词词组(nowonder,anhonour,agoodthing,apity,nosurprise,etc)＋that从句Itisnowonderthatshewassoupset.难怪她如此心烦意乱。It'sapitythatIcan'tattendyourbirthdayparty.真可惜我不能参加你的生日宴会。(3)It＋be＋过去分词(said,reported,thought,expecte
6、d,decided,announced,arranged,etc)＋that从句Itissaidthatanothershoppingmallwillbebuiltinourcity.据说我们城市将再建一座大型购物中心。(4)Itseems/happens/appears/turnsout/occurs等不及物动词或短语＋that从句ItseemsthatAliceisnotcomingtothepartyatall.艾丽丝似乎根本不会来参加晚会。Itturnedoutthatnobodyrememberedtheaddress.结果是无人记得那个地址。Ithappenedtha
7、tIsawhimyesterday.碰巧我昨天看见他了。(5)Itdoesn'tmatter(makesnodifference,etc)＋连接代词或连接副词引导的主语从句Itmakesnodifferencewhereweshallhavethemeeting.我们在哪里开会毫无区别。Itdoesn'tmatterwhethershewillcomeornot.她是否要来没有关系。3．主语从句易混点辨析(1)that与what①that引导主语从句时，不作任何句子成分，只起连接
