Negatives and Questions in the Simple Present Tense
In the simple present tense, negative and question forms are made using the auxiliary verb "do". This page explains the rules.
Forming a negativeNegatives in the simple present are formed by adding don't or doesn't before the simple form of the verb:
Forming a yes/no questionYes/no questions are also created using the auxiliary do. This time, the auxiliary is placed before the subject. Here are the rules:
Forming a WH- questionWH- questions (using words such as "what", "when", "where" etc.) are also created by putting the auxiliary do before the subject. Then, you add the WH- word at the beginning. Here are some examples: