Possible Duplicate: “In school” vs “at school” I've been writing some rules for an NLP recently, and I've come across a small problem... What is the difference in ...
What’s the difference between “to be in use” and “to be at use”? I have impression that former states that something is being used, while the latter means something proves to be useful — the same as ...
Possible Duplicate: Which one is more correct: “works at a university” or “works in a university”? It seems that only in the U.S. one says that they are or were "in ...
I am not sure what the differences between these two phrases are. Can you explain when I should use one or the other? English is not my native language so maybe it is a silly question.
What's the difference between them? I am interested in a generic definition, but here is the sentence I was writing: "The file is located at/in the images folder."
Are both expressions "At the beginning" "In the beginning" valid and equivalent? The first "seems wrong" to me, but it has more Google results.
When do you use at the office? And when do you use in the office? What's the difference between the phrases?
Possible Duplicate: “At” or “in” the office? I am a little confused about which preposition should be used here as in the title. I prefer to use in office. But how about the other one? Are ...