如果我的推论正确的话，我可以告诉你谁是凶手。

If my deductions are correct, I can tell you who the killer was.

《牛津词典》

如果你愿意的话，我现在就可以做这事。

I could do it now, if you like.

《牛津词典》

我把你看成一个好朋友，如果你认为可以的话，我想继续保持这样。

I consider you a good friend, and if it's all right with you, I'd like to keep it that way.

《柯林斯英汉双解大词典》

And I'm sure you can imagine that if you want to label onw protein green and one red and one yellow, now you can start looking at really complex biological processes.

我相信你们可以想象如果你,需要把一个蛋白质标记成绿色,一个标记红色，一个标记黄色，这样你就可以研究非常复杂的生物学过程。

麻省理工公开课 - 化学原理课程节选

So if you answer the phone, you'll be saving me from a long conversation that will last ten hours.

如果你去接电话的话，我就可以免于一段又臭又长的谈话的痛苦了。

Would you 实战 - SpeakingMax英语口语达人

And the reason I want to show you this is to notice that the recursion can be doubled.

如果我来写斐波那契数列你可以看看这儿,原因是我想让你看看这部分的递归可以翻倍。

麻省理工公开课 - 计算机科学及编程导论课程节选