什么时候一般现在时可表示将来事？

Question

例句：our ship sails tomorrow for HK from ShangHai.

Answer 1

一般现在时表将来

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.

参考资料：http://www.hongen.com/eng/pub/yufac/1107.htm

Answer 2

表示一定会发生的事可以用一般现在时。比如飞机，轮船火车等的发车时刻就可以这样用。

Answer 3

不可以这样说。现在进行时be going to/可以表示将来时。

Answer 4

当表示按计划要进行的事，或列有固定时刻表的事。如：飞机，车船等时刻表。

Answer 5

楼上greatzqh回答的很精彩。支持！