题目内容：

ever since 和 since then 意思一样吗?
请详细说一说他们的用法和区别.thanks

优质解答

ever since是从那一直到现在
Have you been living there ever since?
你是不是一直住在那里?
since then是从那以后
He's teach English since then.
从那时起他就教英语.
then有可能特指什么事情或时间.