| TOEFL | English Grammar for Students | Conjugation Of The Verb Do | Previous Up Next |
Conjugation Of The Verb Do
Principal Parts.
|
Present. |
Past. |
Past Part. |
|
Do |
Did |
Done |
Indicative Mode. Present Tense
|
Singular. |
Plural. |
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|
1. |
I do. |
1. |
We do. |
|
2. |
You do. |
2. |
You do. |
|
3. |
He does. |
3. |
They do. |
Past Tense
|
Singular. |
Plural. |
||
|
1. |
I did. |
1. |
We did. |
|
2. |
You did. |
2. |
You did. |
|
3. |
He did. |
3. |
They did. |
Caution
The third person singular of the present tense of do is does. In shortening this into the negative, use doesn't Don't is the negative of do not.
Do is used as a principal verb in all the voices, modes, and tenses.
As an auxiliary do is used with the present tense of other verbs.
1. To make an emphatic form in the present and past tenses:
I do study.
I did study.
2. To make an interrogative form:
Bo you study?
3. To make a negative form.
I do not study.
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