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