e going to do = will do
这是一般将来时
what's.doing可以用what will.do来代替
是将来时,因为是问你他将要去做什么
应该括起来hiking 因为What's your brother going to do for vacation
已经有what's.going了少的是to do的部分
e going to do = will do
这是一般将来时
what's.doing可以用what will.do来代替
是将来时,因为是问你他将要去做什么
应该括起来hiking 因为What's your brother going to do for vacation
已经有what's.going了少的是to do的部分