What will your aunt buy you ( ) your 12th birthday?

问题描述:

What will your aunt buy you ( ) your 12th birthday?
为什么不能用in?

What will your aunt buy you ( for) your 12th birthday? 你姑姑给你12岁生日买什么(礼物)?为什么不能用in ?IN的意思是‘在’,不符合题意,这里用FOR 意思是‘为,给’