不,不经常用英文怎么说

"不经常" 的英文表达方式是 "not often" 。

来源："not" 是英语中的否定词，"often" 是英语中常用的频率副词，结合在一起表示频率不高。

例句：

I don't often go to the movies. (我不经常去看电影。)
He doesn't often call his parents. (他不经常打电话给他父母。)
They don't often eat out. (他们不经常外出吃饭。)