代词的用法!?

it初级代词
可以用来表示时间,天气,距离等
例子:
it is 3:00.
it is a rainny day.
it is 3000km far from here.
还是it. 根据上下文it做代词.
A: i like that cake.
B: i like it too.(代替了上面的cake)
还是it. 代替动词不定式(to do)和动词分词(doing)做主语.
to answer the question is easy for me.
it is easy for me to answer the question.动词不定式被提后,it做了形式主语.
分词例句和上面雷同.
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代词再简单点是根据上下文判断
(这回不是it)
i like the toys.
yep, they are so cute.(they 代替了上文的toys.)
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有部分词都可以做代词
大部分判断哪个代词就是看上下文

代词，代替名词的词，能用名词的地方就能用代词。