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1、高考英语主语从句定：用作主的从句叫主从句，它是名性从句之一。主从句的：不受主句的影响和限制引主从句的接有：从属:that,whether；接代:who(whoever),whom,whose,what(whatever)和which(whichever)；接副:when,where,how和why。接：1.从属：that，whether1）that引主从句只起引作用，在主从句中不充当任何成分，that本身无意，但不能省。略。2）whether意“是否”，放在句首句末皆可。由whether引的名从句做主，表，介，同位！不可用if代替。a.Thatpricewil
2、lgoupiscertain.b.Whethertheywouldsupportuswasaproblem.他是否会支持我是一个。2.接代who，what，which,whatever,whichever,whoever(Who,whom,which,what可以和ever构成合成，和what一引从句，ever起到作用。此主从句不能用形式主it引，它在句子中担任成分，不能省略，序述序，既有疑含,又起接作用,同在从句中充当各种成分。Whichsidewillwinisnotclear.Whoeverbreaksthelawwillbepunished.Whatev
3、erhedidisright.Whokilledthescientistremainsaquestion.1）What和that引的主从句的区：that只起引作用，不充当任何成分，没有意思。起引作用，要充当一定成分(主、或表)，意思是：“什么”。What不Whatweneedismoney.Thathewillcomeiscertain.2）whatever/whoever的用法（~ever=nomatter~---步状从句中）whatever/whoever可以引主从句,并在句中作主、、表等,不含疑意。相当于anythingthat;whoever相当于a
4、nyonewho。例如:Whoever(Anyonewho)wantstoenterintothisschoolmusttaketheexam.Whatever(Anythingthat)shedidwasright.whatever3.接副when，where，how，why等。既有疑含,又起接作用,同在从句中充当各种成分。Howthishappenedisnotcleartoanyone.Whenhewillbebackdependsontheweather.Whenwe’llstarttomorrowwillbetoldsoon.Wherethetest
5、willbegivenisnotyetdecided.4.主从句后置：了避免主冗,句子重脚,常用it作形式主,主从句放在后面作真正的主.例:Thatweshallbelateiscertain.--1）用it作形式主的构It’scertainthatweshallbelate.A.(obvious,bable,ItB.It+be+true,surprising,etc.)如：iscertainthatIt+be+形容+that从句good,wonderful,shewilldowellin名+that从句funny,her(anpossible,exa
6、m.honour,likely,afact,certain,apity,proetc）如：Itisapity/shamethat...憾的是⋯⋯ItisasurprisethatItisafactthat⋯⋯是事ItiscommonknowledgethatIt’sapitythatwecan’tgo.去分+that从句⋯令人惊奇的是⋯⋯⋯是常(said,ItisD.reported,thought,expected,decided,announced,etc。）如：saidthatMr.GreenhasarrivedinBeijing.It+不及物或
7、短+that从句(seem，happen,doesn’tmatter,turnout）。如：Ithappenedthatomeornot.Iwasoutthatday.Itdoesn’tmatterwhethershewillc2)于以接代(副)引的主从句,可以使用形式主代主从句,也可直接在句首使用主从句：a.Whethertheywouldsupportuswasaproblem.b.Itwasaproblemwhethertheywouldsupportus.3）主从句中的否定前移当用it作形式主,而将主从句放在句尾,主从句中的否定常要前移至主句中。
8、例如:ItdoesnIt
