The scenario: Person B has lost the keys but he doesn't want Person A to know that. And Person A wants to tell Person B it is ok and no problem if the case is that he has lost the keys. Which one should Person A use, "if you lost them, it is ok and no problem", or "if you have lost them, it is ok and no problem", just in the meaning "if the case is that you have lost the keys, it is ok and no problem"?
A: I think you have lost the keys, haven't you?
B: No, I must have left them just at home.
A: Hey, if you lost them, it is ok and no problem.
(Hey, if the case is that you have lost the keys ...)
Or,
A: Hey, if you have lost them, it is ok and no problem.
(Hey, if the case is that you have lost the keys ...)
Anonymous A: Hey, if you lost them, it is ok and no problem. I would say it like this: Don't worry about it. It's OK if you lost them.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
AnonymousA: Hey, if you lost them, it is ok and no problem.
I would say it like this:
Don't worry about it. It's OK if you lost them.
(I would not use "have lost" even though it, too, is correct.)
CJ