纳闷

méi rén zài jiā tā xīn lǐ hěn nà mèn

没人在家，他心里很纳闷。

He was surprised to find nobody at home.

tā zhèng nà mèn ne

他正纳闷呢。

He is very puzzled.

tā méi huí tā de xìn tā gǎn dào nà mèn

她没回他的信，他感到纳闷。

He was puzzled that she didn't answer his letter.

wǒ kāi shǐ nà mèn nǐ shì shéi le

我开始纳闷你是谁了！

I'm really starting to wonder who you are.

wǒ nà mèn tā men dào dǐ hái yǒu shén me jiā chǒu

我纳闷他们到底还有什么家丑。

I wonder how many other skeleton they have get in their cupboard.