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中考英語《賓語從句》考點：賓語從句的連接詞
1、連詞that，只起連接作用，在從句中不作句子成分，也無詞匯意義，在口語中常被省略。
eg. He knew (that) he should work hard.
2、連詞if 、whether，它們起連接作用，在從句中不作句子成分，作“是否”解，在口語中多用if。
eg. Tom don’t know if/whether his grandpa liked the present.
He asked me whether or not I was coming.
一般情況下，if 和whether可以互換，但以下3種情況只能用whether：
①在不定式前：Whether to go there or not hasn’t been decided.
②在介詞前：It depends on(依靠) whether it is going to rain.
③與or not連用：They are talking about whether to go there or not.
3、連接代詞who, whom, whose, what, which，連接副詞when, where, why, how， 它們起連接作用，作句子成分，各有自己的意義。
eg. The teacher asked the new students which class he was in.
I wonder where he got so much money.
【注意】
1、由連接代、副詞引導的賓語從句可以和“疑問詞+不定式”結構轉化。eg.
I don’t know how I should do with the presents.
I don’t know how to do with the presents.
2、要注意區(qū)分判斷由if、when引導的從句類型.