一般现在时表将来的用法主要有以下4种情况：

1、come, go, arrive, leave, start, begin, return的一般现在时可以表示将来，主要用来表示在时间上已确定或安排好的事情。例如：

The train leaves at six tomorrow morning. 火车明天上午六点开。

When does the bus star? It stars in ten minutes. 汽车什么时候开？十分钟后。

2、以here, there等开始的倒装句，表示动作正在进行。例如：

Here comes the bus. = The bus is coming. 车来了。

There goes the bell. = The bell is ringing. 铃响了。

3、在时间或条件句中。例如：

When Bill comes （不是will come）, ask him to wait for me. 比尔来后，让他等我。

Ill write to you as soon as I arrive there. 我到了那里，就写信给你。

4、在动词hope, take care that, make sure that等的宾语从句中。例如：

I hope they have a nice time next week. 我希望他们下星期玩得开心。

Make sure that the windows are closed before you leave the room. 离开房间前，务必把窗户关了。