| 1) have as a full verb | ||
|---|---|---|
| affirmative sentence | negative sentence | question |
| I, we, you, they: | ||
| I have a book. | I do not have a book. | Do I have a book? |
| he, she, it: | ||
| He has a book. | He does not have a book. | Does he have a book? |
| 2) be as a full verb | ||
|---|---|---|
| affirmative sentence | negative sentence | question |
| I am from Britain. | I am not from Britain. | Am I from Britain? |
| he, she, it: | ||
| He is from Britain. | He is not from Britain. | Is he from Britain? |
| we, you, they: | ||
| We are from Britain. | We are not from Britain. | Are we from Britain? |
We often use the short forms with this verb.
| 3) do as a full verb | ||
|---|---|---|
| affirmative sentence | negative sentence | question |
| I, we, you, they: | ||
| I do an exercise. | I do not do an exercise. | Do I do an exercise? |
| he, she, it: | ||
| He does an exercise. | He does not do an exercise. | Does he do an exercise? |
| 4) modal auxiliaries can, could, may, must, need, will etc. | ||
|---|---|---|
| affirmative sentence | negative sentence | question |
| every time regardless the subject (I, he, she, it, we, you, they): | ||
| I can play tennis. | I cannot play tennis. | Can I play tennis? |
NOTE:
We can subtitute don't (can't) for do not (cannot).
Modals have the same form every time regardless the subject. We do not add an -s to the infinitive.
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