The option of using simple past vs. present perfect in situations like the following has been bothering me for quite some time.
I sent you a letter a few days ago; I was wondering if you have received it.
I sent you a letter a few days ago; I was wondering if you received it.
People use both of them, in most cases I would say interchangeably. I also searched it on google books, which turned out to be used in roughly the same way. I was wondering if someone could shed some light on what the difference between the two was? Which one is used more often and seems more appropriate over the other?
Best Answer
To a first approximation both OP's sentences are valid - certainly they both mean exactly the same. But if I'm going to get "picky", I don't much like the first one...
...because there's a subtle clash of tense. "I was wondering" refers to my wondering in the past, but "if you have received it" asks about your status (of having received it or not) in the present.
Thus my own preferred version is neither of OP's...
...but to be honest, I'm only proposing that for the sake of grammar. If I needed to convey the sentiment myself I'd just ask "Have you received the letter I sent a few days ago?". It seems to me the additional verbiage is just pointless circumlocution.
Regarding the "mixed tense" issue, note that "I was wondering if you had" is twice as common as "I was wondering if you have". A preference which is even more noticeable when comparing, say, "...if you knew" with "...if you know".