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