To Have
The verb "to have" has special forms. We change its form depending on the subject, which is called conjugation. For example, we say "I have," "she has," "they have," etc.
Positive
I have ... .
You have ... .
He has ... .
She has ... .
It has ... .
We have ... .
You have ... .
They have ... .
Negative
I do not have ... . / I don't have ... .
You do not have ... . / You don't have ... .
He does not have ... . / He doesn't have ... .
She does not have ... . / She doesn't have ... .
It does not have ... . / It doesn't have ... .
We do not have ... . / We don't have ... .
You do not have ... . / You don't have ... .
They do not have ... . / They don't have ... .
Positive Questions
Do I have ... ?
Do you have ... ?
Does he have ... ?
Does she have ... ?
Does it have ... ?
Do we have ... ?
Do you have... ?
Do they have ... ?
Negative Questions
Do I not have ...? / Don't I have ... ?
Do you not have ... ? / Don't you have ... ?
Does he not have ... ? / Doesn't he have ... ?
Does she not have ... ? / Doesn't she have ... ?
Does it not have ... ? / Doesn't it have ... ?
Do we not have ... ? / Don't we have ... ?
Do you not have ... ? / Don't you have ... ?
Do they not have ... ? / Don't they have ... ?
Short Answers
Yes, I do. / No, I don't.
Yes, you do. / No, you don't.
Yes, he does. / No, he doesn't.
Yes, she does. / No, she doesn't.
Yes, it does. / No, it doesn't.
Yes, we do. / No, we don't.
Yes, you do. / No, you don't.
Yes, they do. / No, they don't.
As you can see, when we use the verb "have" as the main verb in a sentence, the auxiliary verb is either "do," or "does" in the Simple Present tense.
Examples:
+She has a big house.
-She doesn't have a big house.
+?Does she have a big house?
-?Doesn't she have a big house? / Does she not have a big house?
Yes, she does. / No, she doesn't.
+They have a dog.
-They don't have a dog.
+?Do they have a dog?
-?Don't they have a dog? / Do they not have a dog?
Yes, they do. / No, they don't.
Exercises
Complete the mini-dialogues below with the correct form of the verb have, do or does. Use contractions where possible.
1"____ you ____ a brother?""No, I ____, but I ____ two sisters."
"Do you have a brother?""No, I don't, but I have two sisters."
2"How many friends ____ he ____?""I'm afraid, he ____ any friends."
"How many friends does he have?"I'm afraid, he doesn't have any friends."
3"____ you ____ a pet?""No, I ____. I ____ any pets, but my sister ____ two cats."
"Do you have a pet?""No, I don't. I don't have any pets, but my sister has two cats."
4"____ she ____ a car?""Yes, she ____. She ____ a Mercedes."
"Does she have a car?""Yes, she does. She has a Mercedes."