English Using Whether in a sentence, how to use whether; Using Whether In this lesson, we will give information about the use of the “whether” pattern in daily life. These patterns need to be memorized and repeated. When converting a question that starts with the auxiliary verb into noun clause, “whether” or “if” is put in front of the noun clause, and the question sentence is converted into a straight sentence. “Or not” can come immediately after whether (whether or not) or it may be at the end of noun clause (whether … or not). However, “or not” is not