all right:好的.表示明白,了解.
Dad: Go get that newspaper for me.
Me: All right.
that's right:没错,对. 表示同意.
Mom: Today is friday,right?
Me: That's right.
that's all right:没关系.表示谅解,不用谢.
Someone: Oh, i m sorry. My apologize.
Me: That's all right.
Someone: Thanks for helping me out, dude.
Me: Thta's all right.