How often do you go swimming?

你多久去游泳一次？

《牛津词典》

How often do you go to church ?

你多久去教堂做一次礼拜？

《牛津词典》

How often do you go riding?

你多长时间骑一次马？

《牛津词典》

He studied more than two hundred echidna shelters to understand where they like to hide and how often they change homes.

VOA: special.2009.07.07

I said that if I was really hygienic, and you can now wonder about how often do I shower?

但是这真的很棒，对不对？,那么为什么我要说这些呢？,我说过如果我真的很讲卫生的话？

麻省理工公开课 - 计算机科学及编程导论课程节选

How often do you see him?

你多久见他一次？

我尊敬的教授 - SpeakingMax英语口语达人

The judge wanted to determine how often the politician had met Mrs Bettencourt in 2007.

BBC: Nicolas Sarkozy to be investigated in Bettencourt scandal

For instance, exactly how will your customers be contacted, how often, and in what manner?

FORBES: Need to Hire a Debt Collector? Here's Some Practical Help

It reveals how often direct-to-consumer tactics are hitting it big in traditional media campaigns.

FORBES: Make Real-Life Experiences Matter In TV Ads