Ⅰ. it 所指代的,与前面的名词是同一事物;它常替代限定词the, this, that 所修饰的单数名词,此外还可用来表示称赞或责备某人做了某事。如:
① Whose is the pen? Oh it’s mine. 这支笔是谁的?哦,是我的。
② It’s very kind of you to invite me to the party. 承蒙邀请,不胜感激。(代to invite…)
Ⅱ. one 所指代的是前面名词提到的同类事物,但不是同一件,它具有泛指的性质;它只能代替可数名词,复数形式是ones 如:
① Have you got a pen? No, I haven’t. Please ask Tom, I think he has got one. 你有钢笔吗?不,我没有。你去找一下汤姆吧,我想他有一只。
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2017届高考英语听力素材:名篇名段 24 Did you deal with fotune fairly
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