often和usually frequently 区分

题目

often和usually frequently 区分
often和usually freguently 的使用?区分?

答案

都有经常的意思,但三个词的频率不一样,给你个简单的图．看了就明白了：
frequently－－often－－usually－－sometimes--rare--never
（ 从左到右,频率从高到低）．