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