▲比较常见的频度副词有 always, usually, often, frequendy, normally, sometimes, occasionally, repeatedly, seldom, rarely, hardly ever 等，另外以下短语也表示频度 once a week, four times a month, from time to time, again and again, now and then, as a rule 等。

▲另外，请参考英语语法网的以下文章，对你可能有帮助：

《英语频度副词复习要点（大全）》

http://www.yygrammar.com/Article/201303/3178.html