我想你早就知道了吧---英语口语

You've got it for ages,right?

You must have known it before, I guess.

You knew it, did you?

这就够了。英语不像汉语必须把时间标明出来不可。英语的动词时态中就包含了明确的时间关系，再添加其它内容有些画蛇添足，是中国式英语。

I think you already know

I think you had known all the time.

u already know it,all right?