必修3主语从句练习一,什么是主语从句
主语从句是一个句子,但在句子作主语成分
二,主语从句有哪些特点
必须有连接词;2
经常隐身(以it为形式主语出现)
It’struethattheearthisround
Thattheearthisroundistrue
表是否的意思时,不能用if代替whether
Ithasn'tbeendecidedwhetherhe'llcomeornot
Whetherhe'llcomeornothasn'tbeendecided
从句语序为主谓宾正常语序
Whydidn'thecome
Whyhedidn'tcomeisnotknown
由what,who,whoever,whatever引导的主语从句不能变为以it为形式主语的句型
Whathesaidatthemeetingisimportant
四,熟记以下变化Whoever=nomatterwho=anyonewhoWhomever=nomatterwho=anyonewhoWhosever=nomatterwhose=anyonewhoseWhichever=nomatterwhich=anyonewhichWhatever=nomatterwhat=anythingthatWhat=先行词+which/that1
________makesmistakesmustcorrectthem
WhoeverD
Whatever2
Itworriedherabit____herhairwasturninggrey
whileB
Whenandwhyhecamehere________yet
isnotknownB
arenotknownC
hasnotknownD
havenotknown4