| 1. | Base Form (Infinitive): | Harm |
| 2. | Simple Past: | Harmed |
| 3. | Past Participle: | Harmed |
| 4. | Present Participle: | Harming |
| 5. | 3rd Person Singular: | Harms |

Harm past tense
| Harmed |
| Harmed is the past tense of the word harm. |
Harm past participle
| Harmed |
| Harmed is the past participle of the word harm. |
Harm verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Harm | Harmed | Harmed | Harming |
Conjugation of Harm
| Simple / Indefinite Present Tense |
| I harm. |
| He/She/It harms. |
| You/We/They harm. |
| Simple Past Tense |
| I harmed. |
| He/She/It harmed. |
| You/We/They harmed. |
| Simple Future Tense |
| I will/shall harm. |
| He/She/It will harm. |
| You/We/They will/shall harm. |
| Present Continuous Tense |
| I am harming. |
| He/She/It is harming. |
| You/We/They are harming. |
| Past Continuous Tense |
| I was harming. |
| He/She/It was harming. |
| You/We/They were harming. |
| Future Continuous Tense |
| I will be harming. |
| He/She/It will be harming. |
| You/We/They will be harming. |
| Present Perfect Tense |
| I have harmed. |
| He/She/It has harmed. |
| You/We/They have harmed. |
| Past Perfect Tense |
| I had harmed. |
| He/She/It had harmed. |
| You/We/They had harmed. |
| Future Perfect Tense |
| I will have harmed. |
| He/She/It will have harmed. |
| You/We/They will have harmed. |
| Present Perfect Continuous Tense |
| I have been harming. |
| He/She/It has been harming. |
| You/We/They have been harming. |
| Past Perfect Continuous Tense |
| I had been harming. |
| He/She/It had been harming. |
| You/We/They had been harming. |
| Future Perfect Continuous Tense |
| I will have been harming. |
| He/She/It will have been harming. |
| You/We/They will have been harming. |