玛萨视频观后感:if 能否与or not 连用

if 能否与or not 连用 but 不能与什么连用?(al)though ,even though or even if unless可与or连用? until 一定要与not连用吗? whether与or not在句中不相邻时whether是否可以改为if I wonder if the answer is right or not.(改错) if not(rs.eof or rs.bof) then... she tells me ( )my pen are good or not.A .if B .whether ________ you give him the book back or not, I’ll tell the teacher. (if) do you say ”hi” to peoplo even if they are strangers? Why or why not