Q1. Would you tell me the difference between these sentences?
I have yet been to the U.S.A.
I have not been in U.S.A.
Q2. What are the other uses of "yet" besides negative usage?
Thanks in advance
not a teacher
I have yet to go to the U.S.A.
I have not been to U.S.A.
I think 1 is the same as 2 except that it indicates a interest and/or a likelihood of the person going to USA.