1什么是频度副词、 程度副词?

问题描述:

1什么是频度副词、 程度副词?
2 she often reads English novels,which does good to her English study
为什么用which 不用what

1 频度副词--表示某事发生频率的高低,always 100% usually 70% sometimes 50% seldom 30%
程度副词-- 如 very so quite
2 which 在一定范围内.而what 没有范围