entfo组成单词：often

adv.时常;常常;往往;大多

比较级： more often最高级： most often

例句：

I often think about my friends back home.

我常常想起老家的朋友。

People often share their political views with their parents.

人常常跟自己的父母政治观点一致。

Stress is often a factor in the development of long-term sickness.

心理压力常常是形成长期病的一个因素。

How often do you use the bus?

你多长时间坐一次公共汽车？