你居然拒绝他的要求。

Nǐ jūrán jùjué tā de yāoqiú.

You actually refused his request.

你居然敢这样对我！

Nǐ jūrán gǎn zhèyàng duì wǒ!

How dare you treat me like this!

他居然迟到了一个小时。

tā jūrán chídàole yīgè xiǎoshí.

He was actually late for an hour.