我现在马上过来！

Wǒ xiànzài mǎshàng guòlái!

I'm coming over right now!

我马上打电话给他！

Wǒ mǎshàng dǎ diànhuà gěi tā!

I am calling him at once!

只要我做完工作我马上就回来。

Zhǐyào wǒ zuòwán gōngzuò wǒ mǎshàng jiù huílái.

As soon as I finish my work, I'll be right back.