Possible Duplicate:
When is it appropriate to end a sentence in a preposition?
I would like to know which is correct and why:
There is a new search of which I've become aware.
or
There is a new search I've become aware of.
Possible Duplicate:
When is it appropriate to end a sentence in a preposition?
I would like to know which is correct and why:
There is a new search of which I've become aware.
or
There is a new search I've become aware of.
Both are possible English sentences, but the first is perhaps more likely to be found in formal contexts.
I think the latter is often used, because some of us were taught in grammar school that prepositions were not words to end sentences with. So, when we encounter a sentence that terminates with a preposition, we apply a knee-jerk "fix" to the problem, by using the construct in your latter example (even though Henry's edit would have been better). Hence,
Prepositions are not words to end sentences with.
becomes
Prepositions are not words with which to end sentences.
which may have kept our middle-school grammar teacher happy, even though
Don't end sentences with prepositions.
would be the better correction.