主语从句题库及答案详解
一、单项选择题（每题2分，共10题）
1.Itisknowntousall______lighttravelsinstraightlines.
A.thatB.whatC.whichD.where
2.______hewillcomeiscertain.
A.IfB.WhetherC.ThatD.What
3.______makesmistakesmustcorrectthem.
A.WhatB.ThatC.WhoeverD.Whatever
4.Itworriedherabit______herhairwasturninggrey.
A.whileB.thatC.ifD.for
5.______weneedismoretime.
A.WhatB.ThatC.WhichD.Whatever
6.______isafactthatEnglishisbeingacceptedasaninternationallanguage.
A.ThereB.ThisC.ThatD.It
7.Itisstillunknown______willwinthegame.
A.whoB.whomC.whichD.what
8.______yousaidisofgreatimportancenow.
A.ThatB.WhatC.WhichD.Whether
9.Thequestionis______willtaketheplaceofhim.
A.whoB.whatC.thatD.which
10.Itisclear______hehasfinishedhiswork.
A.whatB.whichC.thatD.whether
答案：1.A2.C3.C4.B5.A6.D7.A8.B9.A10.C
二、多项选择题（每题2分，共10题）
1.Whichofthefollowingcanbeusedtoleadsubjectclauses?（）
A.thatB.whatC.whetherD.who
2.Subjectclausescanbeplaced（）
A.atthebeginningofasentence
B.after“it”
C.inthemiddleofasentence
D.attheendofasentence
3.Inthesentence“Itisimportantthatweshouldprotecttheenvironment.”,thesubjectclauseis（）
A.ItB.thatweshouldprotecttheenvironment
C.importantD.weshouldprotecttheenvironment
4.Whichsentenceshavesubjectclauses?（）
A.Whatyouneedisagoodrest.
B.Thatheisrightisobvious.
C.Whetherhewillcomeisstillaquestion.
D.Iknowthatheisagoodstudent.
5.Thefunctionofsubjectclausescanbe（）
A.asthesubjectofasentence
B.toexpressafact
C.toexpressadoubt
D.toexpressawish
6.Whenusing“it”asaformalsubject,therealsubjectclausecanbe（）
A.athat-clause
B.awh-clause
C.aninfinitivephrase
D.agerundphrase
7.Whichofthefollowingstatementsaboutsu