| 1. | Base Form (Infinitive): | Jam |
| 2. | Simple Past: | Jammed |
| 3. | Past Participle: | Jammed |
| 4. | Present Participle: | Jamming |
| 5. | 3rd Person Singular: | Jams |

Jam past tense
| Jammed |
| Jammed is the past tense of the word jam. |
Jam past participle
| Jammed |
| Jammed is the past participle of the word jam. |
Jam verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Jam | Jammed | Jammed | Jamming |
Conjugation of Jam
| Simple / Indefinite Present Tense |
| I jam. |
| He/She/It jams. |
| You/We/They jam. |
| Simple Past Tense |
| I jammed. |
| He/She/It jammed. |
| You/We/They jammed. |
| Simple Future Tense |
| I will/shall jam. |
| He/She/It will jam. |
| You/We/They will/shall jam. |
| Present Continuous Tense |
| I am jamming. |
| He/She/It is jamming. |
| You/We/They are jamming. |
| Past Continuous Tense |
| I was jamming. |
| He/She/It was jamming. |
| You/We/They were jamming. |
| Future Continuous Tense |
| I will be jamming. |
| He/She/It will be jamming. |
| You/We/They will be jamming. |
| Present Perfect Tense |
| I have jammed. |
| He/She/It has jammed. |
| You/We/They have jammed. |
| Past Perfect Tense |
| I had jammed. |
| He/She/It had jammed. |
| You/We/They had jammed. |
| Future Perfect Tense |
| I will have jammed. |
| He/She/It will have jammed. |
| You/We/They will have jammed. |
| Present Perfect Continuous Tense |
| I have been jamming. |
| He/She/It has been jamming. |
| You/We/They have been jamming. |
| Past Perfect Continuous Tense |
| I had been jamming. |
| He/She/It had been jamming. |
| You/We/They had been jamming. |
| Future Perfect Continuous Tense |
| I will have been jamming. |
| He/She/It will have been jamming. |
| You/We/They will have been jamming. |
More verb past tense