How often是一个常用的英语短语，用来询问某件事情发生的频率。下面从三个方面展开说明：

1.用法

How often通常用来问一个事件、行为或活动的频率，通常在句子的开头或中间，后面紧跟动词。它可以用来询问任何一种动作，包括行为、活动、事件、习惯等等。

2.句型

How often可以与一系列时间状语连用，如每天、每周、每月、每年、三次、五次等。 另外，它也可以用来询问某件事情在过去发生的频率。

3.例句

1. How often do you exercise? 您多久运动2. How often do you eat out? 你多久吃一次外卖3. How often do you visit your grandparents? 你多久拜访一次你的祖父母4. How often do you brush your teeth? 你多久刷一次牙5. How often do you go to concerts? 你多久去一次音乐会1. How often did you go to the gym last year? 去年你去健身房多少次2. How often did you visit your friends in college? 大学里你多久去一次朋友家3. How often did you eat fast food when you were a student? 当你还是学生的时候，你多久吃一次快餐4. How often did you attend church before moving to this city? 在搬到这个城市之前，你多久去一次教堂5. How often did you travel abroad before the pandemic? 在疫情之前，你多久去国外旅游一次？

中文翻译：多久一次，多常，多久一次地

读音：hau-fn

例句：

1. How often do you exercise? 你多久一次锻炼？

2. I don't go to the movies very often. 我不常去看电影。

3. How often should I water my plants? 我应该多久一次给植物浇水？