how often

Regardless of how often I correct him, he always makes the same mistake.

不管我怎样经常告诫他, 他总是犯同样错误。

How often do you shampoo your hair?

你多久用洗发剂洗一次头?

How often we have been temerarious and rushed unwisely in.

有就是可不顾一了自己利益破坏规矩。