1、always(总是)
usually(通常)
often(经常)
sometimes(有时)
seldom/rarely/hardly(很少)
never(从不)

1、放在实义动词前。
Example:
I always have class on time. 我总是准时上课。
she usually goes shopping on weekends. 我通常周末去逛街
My father never smokes. 我爸爸从不抽烟
2、放在be动词,助动词和情态动词后。
Example:
She is usually late for class. 她经常上课迟到。
I don't often go back to my hometown. 我不常回老家。
your mum can't always stay with you. 你妈妈不可能总是陪着你。

1、疑问词:How often...?
Example:
How often do you drink coffee? 你经常喝咖啡吗?
I often drink coffee. / I drink coffee twice a week.
我经常喝咖啡。/ 我一周喝两次咖啡。
2、具体作答时的用词有:once(一次),twice(两次),3times,4times aweek,month,year 或everday

1、他经常在周末穿这牛仔裤。
2、我上班从不迟到。
3、我的好朋友总是能记住我的生日。
