她纳闷儿,为什么猫今天不肯吃饭。Tā nàmènr, wèishénme māo jīntiān bù kěn chīfàn.She wondered why the cat refused to eat today.
他把门锁好了,却纳闷儿钥匙怎么不见了。Tā bǎ mén suǒ hǎo le, què nàmènr yàoshi zěnme bú jiàn le.He had locked the door, yet wondered where the key had gone.
大家都纳闷儿,平时准时的他今天怎么迟到了。Dàjiā dōu nàmènr, píngshí zhǔnshí de tā jīntiān zěnme chídào le.Everyone was puzzled why he, who is usually on time, was late today.