请问Since then 和 After then 和 After that 这三个有什么区别啊?

问题描述:

请问Since then 和 After then 和 After that 这三个有什么区别啊?

Since then 自从那之后,是完成时态的表现.i have been working hard since then.After then 在那个时间之后,应该是过去时的表现.after then ,we went to a restaurant.After that 在那件事情之后,也是过去时.After that,i didn't talk with him at all.