3.14 one，that 和it
one表示泛指，that和it 表示特指。that与所指名词为同类，但不是同一个，而it 与所指名词为同一个。例如：
I cant find my hat. I think I must buy one.（不定）我找不到我的帽子了。我想我该去买一顶。
The hat you bought is bigger than that I bought.（同类但不同个）你买的那顶帽子比我买的大。
I cant find my hat. I don t know where I put it.（ 同一物）我找不到我的帽子。我不知道我把它放在哪了。
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一周热词榜（6.2-8）
你为什么单身？
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