期末考~急he is arriving here to spend his one-week vacation next week.为什么不是will arrive
问题描述：
期末考~急he is arriving here to spend his one-week vacation next week.为什么不是will arrive
答
be going to 是现在进行时表将来,表示有计划的,一定会去做的事.
will do表示事情有可能发生,但不一定发生.
由句意看,是他制定计划去度假,所以是计划好的,用is arriving