To make questions in the present simple tense we put the auxiliary verbs do/does before the subject. The main verb is in its infinitive form. If we want to use a question word, we must begin our sentence with the question word.
|(question word) + do/does + subject + infinitive|
How many hours a week
Do I know you?
Do you like hot chocolate?
Does she remember this rule?
What does your husband do?
Where do they park their cars?
We usually give short answers to "yes/no" questions. To do that we use do/does in positive answers and the short negative form don’t/doesn’t in negative answers.
— Do you like your job? — Yes, I do.
— Does Sam drink beer? — No, he doesn’t.
— Do they go swimming? — Yes, they do.