The past tense of jackhammer is jackhammered
| Infinitive | to jackhammer |
| Present Tense | jackhammer / jackhammers |
| Past Tense | jackhammered |
| Present Participle | jackhammering |
| Past Participle | jackhammered |
| Singular | Plural |
|---|---|
| I jackhammer | We jackhammer |
| You jackhammer | You jackhammer |
| He/She/It jackhammers | They jackhammer |
| Singular | Plural |
|---|---|
| I am jackhammering | We are jackhammering |
| You are jackhammering | You are jackhammering |
| He/She/It is jackhammering | They are jackhammering |
| Singular | Plural |
|---|---|
| I have jackhammered | We have jackhammered |
| You have jackhammered | You have jackhammered |
| He/She/It has jackhammered | They have jackhammered |
| Singular | Plural |
|---|---|
| I have been jackhammering | We have been jackhammering |
| You have been jackhammering | You have been jackhammering |
| He/She/It has been jackhammering | They have been jackhammering |
| Singular | Plural |
|---|---|
| I jackhammered | We jackhammered |
| You jackhammered | You jackhammered |
| He/She/It jackhammered | They jackhammered |
| Singular | Plural |
|---|---|
| I was jackhammering | We were jackhammering |
| You were jackhammering | You were jackhammering |
| He/She/It was jackhammering | They were jackhammering |
| Singular | Plural |
|---|---|
| I had jackhammered | We had jackhammered |
| You had jackhammered | You had jackhammered |
| He/She/It had jackhammered | They had jackhammered |
| Singular | Plural |
|---|---|
| I had been jackhammering | We had been jackhammering |
| You had been jackhammering | You had been jackhammering |
| He/She/It had been jackhammering | They had been jackhammering |
| Singular | Plural |
|---|---|
| I will jackhammer | We will jackhammer |
| You will jackhammer | You will jackhammer |
| He/She/It will jackhammer | They will jackhammer |
| Singular | Plural |
|---|---|
| I will be jackhammering | We will be jackhammering |
| You will be jackhammering | You will be jackhammering |
| He/She/It will be jackhammering | They will be jackhammering |
| Singular | Plural |
|---|---|
| I will have jackhammered | We will have jackhammered |
| You will have jackhammered | You will have jackhammered |
| He/She/It will have jackhammered | They will have jackhammered |
| Singular | Plural |
|---|---|
| I will have been jackhammering | We will have been jackhammering |
| You will have been jackhammering | You will have been jackhammering |
| He/She/It will have been jackhammering | They will have been jackhammering |
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