never,frequently,rarely,always,sometimes这些都叫什么词?

问题描述:

never,frequently,rarely,always,sometimes这些都叫什么词?

首先他们都是副词,并且属于都是频度副词.在句中如果被提问用:how often
意思分别是:never从不
frequently经常
rarely很少
always总是
sometimes有时