留学生在起床出门时，可以用以下英语表达：

早晨好!

Good morning.

闹钟响了吗？

Did the alarm clock go off？

我得赶紧走!

I have to rush!

我得快点!

I have to hurry （up）!

我得走了!

I have to get going!

我得动起来了!

I have to get moving.

你今天会回来得晚吗？

Are you gonna be late today？

不，和平常一样。

No, I'll be home at the usual time.

几点回来？

What time are you coming home？

大概7点左右吧。

Around seven o'clock.

饭盒带了吗？

Have you got your lunch box？

带了。

Yes, right here.

这些表达涵盖了从起床到出门的常见情景，可以帮助留学生在日常生活中更自然地进行英语交流。