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.