I. 频度副词
1. 常见的频度副词及短语还有： never, ever, hardly（几乎不）, all the time（一直）, by and by（不久）, every two days（every second day=every other day）, once a year, three times a month 等。
All the time I like to be on my own.
Please never be late for school again.
I hardly ever heard him singing.
I go to see my parents every two days/ every other day/ every second day.
