P plhbg1 Forum Master Elite Joined Aug 30, 2020 Posts 16,686 Solutions 48 Reaction 9,540 Points 4,619 Mar 12, 2023 #1 The correct sentence is “I do not know if I will go.” In order to be correct, the sentence with “whether” should be “I do not know whether I will go or not.” “Whether” always requires the use of “or not” while “if” does not. Example: “I wonder if you believe me” stands alone, whereas “I wonder whether you believe me or not” needs the “or not.”
The correct sentence is “I do not know if I will go.” In order to be correct, the sentence with “whether” should be “I do not know whether I will go or not.” “Whether” always requires the use of “or not” while “if” does not. Example: “I wonder if you believe me” stands alone, whereas “I wonder whether you believe me or not” needs the “or not.”