How often do you have this kind of fruit or vegetable?

多久吃一次这种水果或蔬菜

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

How often do you have this kind of cereal?

多久吃一次这种谷物食品

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

For a driver, for instance, when I ask you to rank how good you are as a driver, what people often do is they think--they say, "I'm better than average," but what they do is they focus on one aspect of their driving.

例如，拿司机来说，当我叫人们给自己的开车技术打个分时，人们通常会认为，“我比一般人好”,但其实他们只看到了开车的一个方面。

耶鲁公开课 - 心理学导论课程节选

So how often do you drink sugared beverages?

你多久喝一次含糖的饮料

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选