1)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等后。

I hope they have a nice time next week.

Make sure that the windows are closed before you leave the room.