Is there a differnce between using "if and as long as" in conditional sentences? If so, What is it?
For the use of "if" see http://www.usingenglish.com/articles...ditionals.html
"as long as" expresses time : As long as I live, I shall smoke no more cigarettes OR a condition : You can leave early, as long as you finish the work. It can also be "so long as". Both can be replaced with "provided"