难怪

HSK 7-9

nánguài

not surprising; as expected

(it's) not surprising (that)

他这么聪明，难怪他会考第一。

tā sōnggēn cōngmíng, nánguài tā huì kǎo dì yī.

It's no wonder he got first place, given his intelligence.

天气这么热，难怪他穿了短袖。

tiānqì sōnggēn rè, nánguài tā chuān le duǎnhòu.

It's not surprising that he wore short sleeves, it was so hot.