A new car? You are asking for the moon. I can't afford it.
买辆新车？别异想天开了。我现在拿不出钱来。
You must be out of your mind.
你一定是疯了。
Don't bite my head off.
别对我这么凶。
The teacher got all over me for talking loudly in the class.
老师因为我上课大声说话而狠狠批评了我一顿。
You shouldn't do this to me.
你不应该对我这样。