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it them that one的用法及区别

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it them that one的用法及区别
it them that one的用法及区别
it:代词
5因it 可以指代事情,故可作形式主语.如:It takes 30 minutes to finish my homework.(=To finish my homework takes 30 minutes.)这里 to finish my homework 就是一件事情.
that:为特指,译为:那/那个.
1.可作形容词(adj.)修饰可数名词单数,以及不可数名词.
2.连词.如:so...that ,引导主语从句,宾语从句,同位语从句That/that/that (通常指代事情),定语从句中的that (指代可数名词单数/复数及不可数名词)
3.代词.That's good (代指事情).That's me(代指人).That's an animal(代指动物)That's water (代指不可数名词).That's a desk(代指物).
4.副词.如:that high,that bad,that far等.译为:那么
them:代词
只能指代可数名词复数.如:persons,babies,animals,cats,things,desks.
one:一般只用于可数名词单数.
1.形容词.修饰可数名词.译为:一...
2.代词.译为:一个人
3.数词.(one,two,there,four...)