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英语中有几种从句什么是主语从句的结构
英语里的从句包括主语从句、宾语从句、状语从句、定语从句和同位语从句.主语从句就是一个句子放在整个复合句的句首(倒装句除外)能充当主语的作用.
什么是主语从句如何判断
作句子主语的从句叫主语从句.主语从句通常由从属连词that,whether,if和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导.that在句中无词义,只起连接作用;连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分.例如:
What he wants to tell us is not clear.他要跟我们说什么,还不清楚.
Who will win the match is still unknown.谁能赢得这场比赛还不得而知.
It is known to us how he became a writer.我们都知道他是如何成为一名作家的.
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行,还没有宣布.
有时为避免句子头重脚轻,常用形式主语it代替主语从句作形式主语放于句首,而把主语从句置于句末.主语从句后的谓语动词一般用单数形式.常用句型如下:
(1) It + be + 名词 + that从句
(2)It + be + 形容词 + that从句
(3)It + be + 动词的过去分词 + that从句
(4)It + 不及物动词 + that 从句
另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时,谓语动词要用虚拟语气“(should) +do”,常用的句型有:
It is necessary (important,natural,strange,etc.) that …
It is a pity (a shame,no wonder,etc.) that…
It is suggested (requested,proposed,desired,etc.) that…
英语中的主语从句是什么
语从句(SubjectClause)定义:如果一个句子在复合句中充当一个主语,那么这个句子就是主语从句.第一部分:常规主语从句,即句子在复合句中充当一个主语(1)Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.(2)Whetherwewillgoforanoutingtomorrowremainsunknown.(3)Whowillbeourmonitorhas'tbeendecidedyet.(4)Whomwemuststudyforisaquestionofgreatimportance.(5)Whatcausedtheaccidentremainsunknown.(6)Whateveryoudidisright.(7)Whosewatchwaslostisunknown.(8)Whatweneedistime.(9)Whatweneedaregooddoctors.小结:(1)引导主语从句连词有that,whether,who,what,whatever等(2)连词位于句首不能省略(3)主语从句大多数情况下视为单三,但也有例外,如例9第二部分:为了防止句子头重脚轻,通常把形式主语it放在主语位置,真正主语搁置于句末(1)Itiscertainthathewillwinthematch.(2)Itistruethathehasmadeaveryimportantdiscoveryinchemistry.(3)Itisverylikelythattheywillholdameeting.(4)Itisstrangethatheshoulddothat.(5)Itisimportantthatweallshouldattendthemeeting.(6)Itisstrangethatthemanshouldhavestucktohissillyideas.(7)Itisapitythatwewon'tbeabletogotothesouthtospendoursummervacation.(8)Itisstillamysterywhatcausedtheaccident.(9)Itissaidthathehasgonetoshanghai.(=Heissaidtohavegonetoshanghai)(10)ItisknowntoallthatthegunpowderwasfirstinventedbytheChinese.(11)Itissuggestedthattheworkshouldbedonewithgreatcare.(12)Itseemsthathehasseenthefilm.(=Heseemstohaveseenthefilm)(13)Ithappenedthatthetwocheatswerethere.(=Thetwocheatshappenedtobethere)小结:(1)以that引出的主语从句,常以形式主语it引导.Itis+形容词/名词/某些动词ed+that从句.(2)在有些that从句中要用虚拟语气(should+do/should+havedone)例句4,5,6,11.
英语中主语从句是什么意思
主语从句就是一个句子作主语~如:(That
Mary
married
Jack)
surprised
everyone
括号内容为主语从句,主句的谓语是surprise~~宾语补足语如:to
have
my
hair
cut
而cut就是宾语我的头发的补足语
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