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时间:2020-03-17
《高中英语 主语 从句.ppt》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、主语从句Whowillwinthematchisstillunknown.Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主语从句宾语从句表语从句名词性从句的作用相当于名词,因此主语从句、表语从句、宾语从句和同位语从句分别作主句的主语、表语、宾语和同位语。同位语从句NounClauses(名词性从句)SubjectClause(主语从句)AppositiveClause(同位语从句)ObjectClause(宾语从句)PredicativeClause(表语
2、从句)Grammar3.Tofindyourwaycanbeaproblem.2.Smokingisbadforyou.1.Youareastudent.4.“Howdoyoudo?”isagreeting.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itiscertainthatweshallbelate.Subject(主语)AsentenceservedassubjectiscalledSubjectClause.主语从句定义:主语从句是在复合句中充当主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放
3、在句子末尾。导主语从句的有连词that,whether,连接代词who,what,which,连接副词when,where,how,why等。1)从属连词:that,whether等.that引导主语从句只起引导作用,本身无实际意义,在主语从句中不充当任何成分,但不能省略。Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved..Itwasn
4、otclearwhetherthesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.Real引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.Conclusion:ifIf×注意:由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:1.Thathewillrefusethispieceofadviceisimpossible.__________
5、____________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it为形式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.这样就构成了下面一些常用句型:1)Itis+n.+从句Itisapity/shamethat...遗憾的是……Itisas
6、urprisethat…令人惊奇的是…Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat2)Itis+adj.+从句It’scertainthat…肯定…Itispossiblethat...很可能……Itisunlikelythat...不可能……Itisobviousthat…很明显…Itisnecessaryimportantatural
7、...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat主语从句的虚拟语气①表“应该,惊讶、惋惜、遗憾”等意义Itisimportant/natural/necess
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