Different forms of have
Have is sometimes a main verb and sometimes an auxiliary verb. When have is a main verb, the auxiliary verb is not have (unless we are using the present perfect) so we have to use a different auxiliary verb.
Look at these sentences:
Have as main verb
Action verb |
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Positive |
Negative |
Question |
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I have a shower every day |
I don’t have a shower every day. |
Do you have a shower every day? |
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I have breakfast at 8 am. |
I don’t have breakfast at 8 am. |
Do you have breakfast at 8 am? |
Possession |
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Positive |
Negative |
Question |
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I have a car. |
I don’t have a car. |
Do you have a car? |
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I have brown eyes. |
I don’t have brown eyes. |
Do you have brown eyes? |
Obligation |
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Positive |
Negative |
Question |
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I have to pay taxes. |
I don’t have to pay taxes. |
Do you have to pay taxes? |
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I have to get up at 7 o’clock on Mondays. |
I don’t have to get up at 7 o’clock on Mondays. |
Do you have to get up at 7 o’clock on Mondays? |
Have as an auxiliary verb
Possession |
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Positive |
Negative |
Question |
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I’ve got a car. |
I haven’t got a car. |
Have you got a car? |
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I’ve got brown eyes. |
I haven’t got brown eyes. |
Have you got brown eyes? |
Present Perfect |
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Positive |
Negative |
Question |
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I’ve been to America. |
I haven’t been to America. |
Have you been to America? |
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I’ve finished my meal. |
I haven’t finished my meal. |
Have you finished your meal? |