Question

英语中的主语从句是怎么回事

Answer 1

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.

Answer 2

一个句子作主语，那个句子就是主语从句，比如说What
makes
you
beautiful
is()，括号里填一个句子，解释what，由于what在句子中做主语，括号中即为主语从句。
最后推荐这首What
makes
you
beautiful，1D的歌，超劲爆的!

Answer 3

在句子中担当主语的从句就叫做主语从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。