| 1. | Base Form (Infinitive): | Act |
| 2. | Simple Past: | Acted |
| 3. | Past Participle: | Acted |
| 4. | Present Participle: | Acting |
| 5. | 3rd Person Singular: | Acts |

Act past tense
| Acted |
| Acted is the past tense of the word act. |
Act past participle
| Acted |
| Acted is the past participle of the word act. |
Act verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Act | Acted | Acted | Acting |
Conjugation of Act
| Simple / Indefinite Present Tense |
| I act like a child. |
| He/She/It acts like a child. |
| You/We/They act like a child. |
| Simple Past Tense |
| I acted like a child. |
| He/She/It acted like a child. |
| You/We/They acted like a child. |
| Simple Future Tense |
| I will/shall act like a child. |
| He/She/It will act like a child. |
| You/We/They will/shall act like a child. |
| Present Continuous Tense |
| I am acting like a child. |
| He/She/It is acting like a child. |
| You/We/They are acting like a child. |
| Past Continuous Tense |
| I was acting like a child. |
| He/She/It was acting like a child. |
| You/We/They were acting like a child. |
| Future Continuous Tense |
| I will be acting like a child. |
| He/She/It will be acting like a child. |
| You/We/They will be acting like a child. |
| Present Perfect Tense |
| I have acted like a child. |
| He/She/It has acted like a child. |
| You/We/They have acted like a child. |
| Past Perfect Tense |
| I had acted like a child. |
| He/She/It had acted like a child. |
| You/We/They had acted like a child. |
| Future Perfect Tense |
| I will have acted like a child. |
| He/She/It will have acted like a child. |
| You/We/They will have acted like a child. |
| Present Perfect Continuous Tense |
| I have been acting like a child. |
| He/She/It has been acting like a child. |
| You/We/They have been acting like a child. |
| Past Perfect Continuous Tense |
| I had been acting like a child. |
| He/She/It had been acting like a child. |
| You/We/They had been acting like a child. |
| Future Perfect Continuous Tense |
| I will have been acting like a child. |
| He/She/It will have been acting like a child. |
| You/We/They will have been acting like a child. |