is not easy to say. 3)连接副词when,where, how, why等。 Why he did it remains a mystery.
2.位置: 主语从句可以前置,也可以后置。用it做形式主语,而把主语从句,在句末,常用下面几种句型。 1)It + be + 表语
+主语从句 表语:(名词, 形容词,过去分词) 2)It+不及物动词+主语从句 It seemed (happened, doesn’t matter, has turned out) that…
It is still uncertain whether he is coming or not. It happens that they were absent. It is a fact (a shame, a pity, good news…) that… 3) It +及物动词(被动语态)+主语从句 It has been decided that the exhibition will not open on Sundays. 注意: 1)主语从句在句首时,必须由连接词引导,不能省略这些连接词;但是如果用it做形式主语,而把主语从句放在句末时,从属连词that可以省略。 误:They should like each other is natural. 正:That they should like each other is
natural. 正:It is natural that they should like
each other. 2)如果主语从句放在句首,不能用if引导,但是如果用it 做形式主语,而把主语从句放在句末时,也可以用if引导. 误:If Mary really heard him is really doubtful. 正:It was doubtful if Mary really heard him. 1.I have always been honest and straightforward, and it doesn‘t matter ______that I’m talking to.
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