题目内容：

when、while、as、whenever的用法区别

优质解答

我在百度空间有总结wheneveradv.无论何时conj.每当,无论何时,随时例句与用法：I mind my p's and q's whenever I see him.每当我见到他我都谨慎行事.I'd like to see you whenever it's convenient.在你方便的时候我...