14 Aug 2015 Home » Grammar » Difference Between For and Since Difference Between For and Since Posted in Grammar By englishlearn_admin On August 14, 2015 Difference Between For and Since For and Since can be used with the present perfect tense. They tell us when something started and that it’s still happening now. Tags:Difference Between For and Since, uses of for, uses of since Related Posts Adjectives – Word Order English Slang Idioms and Expressions Uses of Only and Just