Lecture 3:  DO as a Verb Auxiliary in Yes/No Questions

• To make a sentence, start with the subject, then follow with the verb. 

Examples:

I like school.
The teacher gives homework.

• To ask a question, start with do or does, follow with the subject, then the main verb:

Examples:

Do you like school?
Does the teacher give homework?

  So, the verb do helps make a YES/NO question by changing place with the subject.

More examples: 

My students read. ]  Do my students read?

Maria works. ] Does Maria work?

  Use do to give short answers to YES/NO questions.

Put the subject first, then the correct form of do.
(Remember, 3rd person singular (he/she/it) takes the form does.  All other subjects take the form do.)

Question	Short Answer
Do my students read?	Yes, they do.
Does Maria work?	No, she does not.
Does she speak English?	Yes, she does.
Do they go on vacation every year?	No, they do not.