lastnight是什么意思

　　A young man was found beaten to death last night.

　　昨天夜里有人发现一名小伙子被打死了。

　　There was heavy fighting in the capital last night.

　　昨晚首都发生了激烈战斗。

　　Did you see that programme on India last night?

　　昨晚关于印度的那个节目你看了没有？