It's on the morning of May 15 if it won't rain.错哪

问题描述:

It's on the morning of May 15 if it won't rain.错哪
please ring me up and tell me if you will come.

具体日期是用on的,此句if“如果”后用一般现在时
It's on the morning of May 15 if it doesn't rain.