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I don’t know where he lives.
引导词
作用
示例
that
本身无意义,只起连接作用,口语中可省略
He said (that) he would go to the seaside.
连接代词
(what/which/who/whose/
whom等)
在从句中作一定的成分,如:作主语、宾语、定语等
I don't know what they are going to do.
He asked me whose book it was.
连接副词
(when/
where/why/
how等)
在从句中作状语
Could you tell me where you are from?
He explained how the
system worked.
if/whether
意为“是否”,不作句子成分,不可省略,句尾有or not时用whether
He asked me whether Miss Gao was a teacher or not
宾语从句的时态应遵循以下三个原则:
1. 需要性原则:主句是现在时,从句时态随句意。
2. 呼应性原则:主句是过去时,从句用过去的某种时态。
3. 特殊性原则:从句表示客观事实、真理自然现象,从句用一般现在时。
Step2
The boy tells dad(that)…