| 1. | Base Form (Infinitive): | Concern |
| 2. | Simple Past: | Concerned |
| 3. | Past Participle: | Concerned |
| 4. | Present Participle: | Concerning |
| 5. | 3rd Person Singular: | Concerns |
Concern past tense
| Concerned |
| Concerned is the past tense of the word concern. |
Concern past participle
| Concerned |
| Concerned is the past participle of the word concern. |
Concern verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Concern | Concerned | Concerned | Concerning |
Conjugation of Concern
| Simple / Indefinite Present Tense |
| I concern. |
| He/She/It concerns. |
| You/We/They concern. |
| Simple Past Tense |
| I concerned. |
| He/She/It concerned. |
| You/We/They concerned. |
| Simple Future Tense |
| I will/shall concern. |
| He/She/It will concern. |
| You/We/They will/shall concern. |
| Present Continuous Tense |
| I am concerning. |
| He/She/It is concerning. |
| You/We/They are concerning. |
| Past Continuous Tense |
| I was concerning. |
| He/She/It was concerning. |
| You/We/They were concerning. |
| Future Continuous Tense |
| I will be concerning. |
| He/She/It will be concerning. |
| You/We/They will be concerning. |
| Present Perfect Tense |
| I have concerned. |
| He/She/It has concerned. |
| You/We/They have concerned. |
| Past Perfect Tense |
| I had concerned. |
| He/She/It had concerned. |
| You/We/They had concerned. |
| Future Perfect Tense |
| I will have concerned. |
| He/She/It will have concerned. |
| You/We/They will have concerned. |
| Present Perfect Continuous Tense |
| I have been concerning. |
| He/She/It has been concerning. |
| You/We/They have been concerning. |
| Past Perfect Continuous Tense |
| I had been concerning. |
| He/She/It had been concerning. |
| You/We/They had been concerning. |
| Future Perfect Continuous Tense |
| I will have been concerning. |
| He/She/It will have been concerning. |
| You/We/They will have been concerning. |
