if后不加能加or not

whether if or not whether...or not; if...or not if.or not的意思 whether...or not与if ...or not...有什么区别 If happy or not depends on myself, if not和whether or的区别 if law-breaker not published or went unpunished ,the society whether...or not中whether能用if替换吗? Decide whether the following sentence are correct or not.If 宾语从句中if与or not可以连用吗 I wonder if the answer is right or not.(改错) Ask if Claire wants to go with him or not?