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