howoften后面加动词是什么（知识点名Howoften）

讲义：

用法一：how often 指每隔多久，主要用来对频度副词或状语(如：once a week, three times a month 等)提问。如

-How often do you go to see the films?你多久去看一次电影？

-I hardly ever go to see the films.我几乎从不看电影。

-How often does he help with housework?他多久帮忙做一次家务？

-Maybe four times a month.可能一个月四次。

用法二：常见频率副词

例：My sister never eats junk food.

我姐姐从不吃垃圾食品。

Ninety percent of the students always use the Internet.

90%的学生经常上网。

用法三：次数的表达方法

例：We go to school five times a week. 我们一周去学校五次。

The magazine comes out once a month. 这杂志一个月出版一次。