about tag question we know that we can use " he goes to the library, doesn't he?" but how about " he seldom goes to the library, doesn't he?" or you use " he seldom goes to the library, does he?" because I think" he seldom goes there" means he do go there but at the same time another thought pop up that the word "seldom" has it's negative meaning is very less. Sounds contradictory :( . can someone help me out with this?