| 1. | Base Form (Infinitive): | Constrain |
| 2. | Simple Past: | Constrained |
| 3. | Past Participle: | Constrained |
| 4. | Present Participle: | Constraining |
| 5. | 3rd Person Singular: | Constrains |
Constrain past tense
| Constrained |
| Constrained is the past tense of the word constrain. |
Constrain past participle
| Constrained |
| Constrained is the past participle of the word constrain. |
Constrain verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Constrain | Constrained | Constrained | Constraining |
Conjugation of Constrain
| Simple / Indefinite Present Tense |
| I constrain. |
| He/She/It constrains. |
| You/We/They constrain. |
| Simple Past Tense |
| I constrained. |
| He/She/It constrained. |
| You/We/They constrained. |
| Simple Future Tense |
| I will/shall constrain. |
| He/She/It will constrain. |
| You/We/They will/shall constrain. |
| Present Continuous Tense |
| I am constraining. |
| He/She/It is constraining. |
| You/We/They are constraining. |
| Past Continuous Tense |
| I was constraining. |
| He/She/It was constraining. |
| You/We/They were constraining. |
| Future Continuous Tense |
| I will be constraining. |
| He/She/It will be constraining. |
| You/We/They will be constraining. |
| Present Perfect Tense |
| I have constrained. |
| He/She/It has constrained. |
| You/We/They have constrained. |
| Past Perfect Tense |
| I had constrained. |
| He/She/It had constrained. |
| You/We/They had constrained. |
| Future Perfect Tense |
| I will have constrained. |
| He/She/It will have constrained. |
| You/We/They will have constrained. |
| Present Perfect Continuous Tense |
| I have been constraining. |
| He/She/It has been constraining. |
| You/We/They have been constraining. |
| Past Perfect Continuous Tense |
| I had been constraining. |
| He/She/It had been constraining. |
| You/We/They had been constraining. |
| Future Perfect Continuous Tense |
| I will have been constraining. |
| He/She/It will have been constraining. |
| You/We/They will have been constraining. |
