however often he does it,he always makes a mistake.

题目

however often he does it,he always makes a mistake.
为什么是often he does it而不是he oftendoes it呢?often是为了表示强调吗?
thanks a lot

答案

这里的however表示“无论到什么程度,不管多么”,要与形容词或副词连用,强调“不管...”
再例如：however cold it is outside,he has the window open.
不管外面多冷他都开着窗户.