疑问代词在引起从句时,都称为连接代词,包括who,whom,whose,what,which,whoever,whomever,whichever,whatever,一共九个,即除了whose后不能加“-ever”后缀,其余都行.它们可以引起:
a.主语从句:
It hasn’t been announced who won the prizes.还没宣布谁获奖.
It is clear enough what she meant.
b.宾语从句:
I don’t care what they think.他们怎么想我不管.
Ask her which he wants.问她要哪一个.
c.表语从句:
The question is who(m) we should trust.问题是我们应当相信谁.What I want to know is which road we should take.我想知道的是我们应走哪条路.
d,状语从句
Wherever you go,whatever you do,I will be right here waiting for you.无论你去哪里,无论你做了什么,我都会在这里等你.
e,连代词还可引起不定式,都用作宾语或介词的宾语:
Tell him what to do.告诉他怎样做.
Lucy can’t decide which to choose.露西不能决定选哪个好.
They exchanged views on the question of whom to elect.他们就该选谁的问题交换了意见.
当然,这些连接代词在从句中作什么成分还得具体问题具体分析!