Let me know whether you love me.为什么用whether,而不用if?

Let me know whether you love me.为什么用whether,而不用if? Let me know whether you are coming.是什么从句?Let me know if you I want to know whether you love me中whether you love me做know的 I would appreciate( )if you let me know in advance whether y Tell me whether you really love me ?! please let me know if he comes 中的if不可用whether代替 If I love you,so whether you will love me,if you are,please Whether you believe me,I still love I care about whether you love me. You and me whether it is by chance? If you are like me, love Don't know whether you are willing to let me know Whether you miss me or not,whether you love me or not.Love i