问题描述：
英语中for 和to 有什么区别?
比如在做介词时怎么区分：用for 、to 填空
these math problems are too difficult ( ) us.(for / to)
somking will do harm _____you.
the house is big enough ________us two .
比如在做介词时怎么区分：用for 、to 填空
these math problems are too difficult ( ) us.(for / to)
somking will do harm _____you.
the house is big enough ________us two .
问题解答：
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