1）下列动词：come,go,arrive,leave,start,begin,return的一般现在时表将来.这主要用来表示在时间上已确定或安排好的事情.
The train leaves at six tomorrow morning.
When does the bus star?It stars in ten minutes.
2）倒装句,表示动作正在进行,如：
Here comes the bus.= The bus is coming.
There goes the bell.= The bell is ringing.
3）在时间或条件句中.
When Bill comes (不是will come),ask him to wait for me.
I'll write to you as soon as I arrive there.
4）在动词hope,take care that,make sure that等后.
I hope they have a nice time next week.
Make sure that the windows are closed before you leave the room.
