English Verb - To Contribute Infinitive - to contribute Present participle - contributing Past participle - contributed 1. Present Tense Singular I contribute You contribute 7 He/she/it contributes Plural We contribute You contribute They contribute 2. Present Progressive Tense Singular I am contributing You are contributing He/she/it is contributing Plural We are contributing You are contributing They are contributing 3. Past Tense Singular I contributed You contributed He/she/it contributed Plural We contributed You contributed They contributed 4. Present Perfect Tense Singular I have contributed You have contributed He/she/it has contributed Plural We have contributed You have contributed They have contributed 5. Present Perfect Progressive Tense Singular I have been contributing You have been contributing He/she/it has been contributing Plural We have been contributing You have been contributing They have been contributing 6. Past Progressive Tense Singular I was contributing You were contributing He/she/it was contributing Plural We were contributing You were contributing They were contributing 7. Past Perfect Tense Singular I had contributed You had contributed He/she/it had contributed Plural We had contributed You had contributed They had contributed 8. Past Perfect Progressive Tense Singular I had been contributing You had been contributing He/she/it had been contributing Plural We had been contributing You had been contributing They had been contributing 9. Future Tense Singular I will contribute You will contribute He/she/it will contribute Plural We will contribute You will contribute They will contribute 10. Future Progressive Tense Singular I will be contributing You will be contributing He/she/it will be contributing Plural We will be contributing You will be contributing They will be contributing 11. Future Perfect Tense Singular I will have contributed You will have contributed He/she/it will have contributed Plural We will have contributed You will have contributed They will have contributed 12. Future Perfect Progressive Tense Singular I will have been contributing You will have been contributing He/she/it will have been contributing Plural We will have been contributing You will have been contributing They will have been contributing