如果你知道，请告诉我。

Pray tell me if you know.

youdao

请帮我弄到这份工作—你知道我也会为你的事同样尽力。

Please help me get this job—you know I would do as much for you.

《牛津词典》

如果你知道我在哪儿可以找到我的玩伴，请告诉我。

Tell me if you know where I can find my playfellow.

youdao

If you have, if you know you have a conflict with one of those quiz dates now John please see John or I right away.

如果你有事，如果你现在就知道,你有事和这两天冲突了,请马上来见我和。

麻省理工公开课 - 计算机科学及编程导论课程节选