前面一个问题（http://ask.yygrammar.com/q-28645.html）让我想另一个有关问题：
Every year at Easter I went to see him.
请问这里的Every yearat Easter 怎么样剖析？两个都是时间状语？
every year为频度状语，at Easter为时间状语。
比较：
Every year at Easter I went to see him.
Every year I went to see him at Easter.
又如：
Sometimes I went to see him on weekends.