since she can‘t answer this question ,it's better to ask someone else.这里为什么用it.换成you行吗
问题描述：
since she can‘t answer this question ,it's better to ask someone else.这里为什么用it.换成you行吗
答
不行，如果非要换成you的话，后面可改为you'd better ask someone else.
答
答案：不能
it's better to do... it形式主语,to do,真正主语
换成you'd better 后面不能+to do.. 改成you'd better ask...
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