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1、主语从句用法小结勉县第二中学高二(7)班郭恬指导老师:李艳请观察下列句子,注意主语从句的特点。1.Thattheearthtravelsroundthesunisawell-knownfact.2.Whethertheartistcandoitornotisuncertain.3.Whowillacttheleadintheplayhasnotbeendecidedyet.4.Wheretheyoungmanhasgoneisnotknown.5.Whenandwherethetestwillbegivenisnotyetdecided.【归纳总结】主语从句必须有引导词;主语从句用
2、陈述句语气。1.引导主语从句的词有:连词:that,whether;连接代词:who,whose,whom,whoever,what,which等;连接副词where,when,whenever,wherever,how,why等。主语从句引导词的选择:1).连接词:that,whether(1)Thathewillwiniscertain.(2)IthasbeenreportedthatsalesofbeefinChinawillincrease.(3)Whetherweshallraiseducksorgeeseremainstobedecided.(4)Whetherhe’l
3、ljoinusinthediscussionisofgreatimportance.2)连接代词:who,whom,whose,what,which,whoever,whatever,whichever等。(1)Itisclearwhoisafraidofhavingachangeinlandownership.(2)Whosebagitiscannotbetold.(3)WhatIndianeedsisalawtomakelandownershipfairer.(4)Itisnotyetdecidedwhichcashcropwillbeproducednextyear.(5)W
4、hateverhesaidwasright.(6)Whoevergotheremustgetreadyby6o’clock.3)连接副词:when,where,why,how,howmany,howmuch,howlong,howsoon,howoften等。(1)Whenwe’llstarttomorrowwillbetoldsoon.(2)Wherewecanbuyoxenissomethingweneedtofindout.(3)How/Whenhecamehereisnotknown.(4)Howwecanprotectthegrainneedstobediscussed.
5、(5)Howmanypeoplediedfromstarvationthatyearwillneverbeknown.(6)Howoftenhe’llgotoseehisgrandmotherdependsonthetimehecanspare.归纳总结:主语从句引导词的选择主要是根据从句的结构和意义来选择。1.如果从句的意义和结构完整,则用that。2.如果从句的意义和结构不完整,则根据从句的意义和结构选择相应的引导词。比较that/what1.Whathewantsisabook.2.Thathewantstogothereisobvious.3.Whathappenedisn
6、otclear.4.ThisisthebestTVthatismadeinChina.定语从句5.ThefirstmuseumthathevisitedinChinawastheHistoryMuseum.定语从句that和what的选用:that和what都可引导主语从句。但是,what除起连接作用外,还在主语从句中充当成分,可做从句的主语、宾语、或表语。而that在主语从句中不充当任何成分,只起连接作用。翻译和分析下列句子:1.Itiswellreportedthatastormiscoming.2.Itistruethattheearthmovesaroundthesun.3
7、.ItisapitythatImissedthetrain.4.Itdoesn’tmatterwhetherhewillcomeornot.5.Itseemsthatitisgoingtorain.6.Ithappenedthattheydidn’tknowmyaddress.归纳:为了使句子保持平衡,常用it来代替主语从句,而把主语从句放到后面,尤其是连词that引导的主语从句常用于此种句式中。常用句型如下:It+be+名词+that从句It+be+形容词+that