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1、SubjectClause主语从句RevisionFindthesubjectsinthefollowingsentences.1.Atreehasfallenacrosstheroad.2.Youareastudent.3.Tofindyourwaycanbeaproblem.4.Smokingisharmfultoyou.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.It’scertainthatweshallbelate.Thathewillsucceedi
2、scertain.Whowillbeourmonitorhasn'tbeendecidedyet.Whetherhewilljoinuswon'tmakedifference.Howthebookwillselldependsonitsauthor.Whatcausedtheaccidentremainsunknown.定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句。2.由形式主语it代替，而本身放在句子末尾。位置：1.通常放在主句谓语动词之前Itdoesn’tmatterwhetherheiswrongornot.辨别
3、下列从句的类别：1.ItisimpossiblethatIgoandattendthemeeting.2.JohnsaidthathewasleavingforLondon.3.Thefactisthathehasnotbeenseenrecently.4.Thatweneedmoreequipmentisquiteobvious.5.HewilltalktousaboutwhathesawinU.S.6.Itisverylikelythattheywillholdameeting.宾语从句主语从句表语从句主语从句主语从句宾语从句引
4、导主语从句的连接词可分为三类：连接词：that,whether,（if）连接代词：what,whichwho,whom,whose,whatever,whoever,whichever等连接副词：when,where,how,why，whenever,wherever等主语从句的连接词★无词义★在主语从句中不作成分★一般不能省略（尤其在句首时）Thathewillcomeandhelpusiscertain.Thatheisthebeststudentintheclassisobvious.thatWhetherwewillsucc
5、eedisstillaquestionIfwewillsucceedisstillaquestion.(×)Itisnotknownwhether/ifhewillcome.Whether（if）★有词义：“是否”★在主语从句中不作成分★whether引导的主语从句可放句首、句末★If引导的主语从句不能位于句首。连接副词when,where，why,how,等.Whatheishasnothingtodowithyou.Whoseticketthisishasnotbeenfoundout.Whenthetestwillbegive
6、nisnotyetdecided.Whateveryoudidisright.连接代词what,whatever,who,whoever,whose,which,whichever等.★有词义★在主语从句中作成分在主语从句中，连接词的选择要看这个从句的句子结构，假如根据意思判断为缺少主语，宾语，表语等时应该考虑who,whoever,which,whichever,what,whatever,whom,whomever.如果缺少定语则想到whose,which,缺少状语，应该选择how,wherewhen,why等，因此要想做好题目
7、首先你得了解句子成分。_______Ican’tunderstandiswhyhehaschangedhismind._______breaksthelawwillbepunished.如何选择连接代词和连接副词缺少understand的宾语意为“…的事”缺少breaks的主语，意为“无论谁”WhatWhoeverThathefinishedwritingthecompositioninsuchashorttimesurprisedus.Whetherhewillcomeornotdoesn’tmatter.Whowilldotha
8、tjobisnotyetdecided.主语从句后置!=Itsurprisedusthathefinishedwritingthecompositioninsuchashorttime.=Itdoesn’tmatterwhetherh
