| 1. | Base Form (Infinitive): | Contribute |
| 2. | Simple Past: | Contributed |
| 3. | Past Participle: | Contributed |
| 4. | Present Participle: | Contributing |
| 5. | 3rd Person Singular: | Contributes |

Contribute past tense
| Contributed |
| Contributed is the past tense of the word contribute. |
Contribute past participle
| Contributed |
| Contributed is the past participle of the word contribute. |
Contribute verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Contribute | Contributed | Contributed | Contributing |
Conjugation of Contribute
| Simple / Indefinite Present Tense |
| I contribute. |
| He/She/It contributes. |
| You/We/They contribute. |
| Simple Past Tense |
| I contributed. |
| He/She/It contributed. |
| You/We/They contributed. |
| Simple Future Tense |
| I will/shall contribute. |
| He/She/It will contribute. |
| You/We/They will/shall contribute. |
| Present Continuous Tense |
| I am contributing. |
| He/She/It is contributing. |
| You/We/They are contributing. |
| Past Continuous Tense |
| I was contributing. |
| He/She/It was contributing. |
| You/We/They were contributing. |
| Future Continuous Tense |
| I will be contributing. |
| He/She/It will be contributing. |
| You/We/They will be contributing. |
| Present Perfect Tense |
| I have contributed. |
| He/She/It has contributed. |
| You/We/They have contributed. |
| Past Perfect Tense |
| I had contributed. |
| He/She/It had contributed. |
| You/We/They had contributed. |
| Future Perfect Tense |
| I will have contributed. |
| He/She/It will have contributed. |
| You/We/They will have contributed. |
| Present Perfect Continuous Tense |
| I have been contributing. |
| He/She/It has been contributing. |
| You/We/They have been contributing. |
| Past Perfect Continuous Tense |
| I had been contributing. |
| He/She/It had been contributing. |
| You/We/They had been contributing. |
| Future Perfect Continuous Tense |
| I will have been contributing. |
| He/She/It will have been contributing. |
| You/We/They will have been contributing. |