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.