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宾语从句连接词各自在句子中充当的成分都有什么?

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宾语从句连接词各自在句子中充当的成分都有什么?
宾语从句连接词各自在句子中充当的成分都有什么?
一、宾语从句的连接词
1.连词that,只起连接作用,在从句中不作句子成分,也无词汇意义,在口语中常被省略.
eg.He knew (that) he
should work hard.
2.连词if 、whether,它们起连接作用,在从句中不作句子成分,作“是否”解,在口语中多用if.eg.
Tom don't know if/whether his grandpa liked the present.
He asked me whether or not I was
coming.
3.连接代词who,whom,whose,what,which,连接副词when,where,why,how,
它们起连接作用,作句子成分,各有自己的意义.eg.The teacher asked the new students which class he
was in.
I wonder where he got so much
money.