下列動詞：come, go, arrive, leave, start, begin, return的一般現在時表將來。這主要用來表示在時間上已確定或安排好的事情。
the train leaves at six tomorrow morning.
when does the bus star? it stars in ten minutes.
2）倒裝句，表示動作正在進行，如：
here comes the bus. = the bus is coming.
there goes the bell. = the bell is ringing.
3）在時間或條件句中。
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）在動詞hope, take care that, make sure that等後。
i hope they have a nice time next week.
make sure that the windows are closed before you leave the room.