都可以。
比如Since When you could talk me like that？ Or Since Wed, we already worke on this project.
After that, we can....
Answer:
1. 可以 eg: in that = because
2. since 后加 时间点 （for 后加 一段时间 ）
eg：I have been there many times since the war.
We have both changed since we parted.
补充：是时间点
