Mastering Modal Perfects, Gerunds, Infinitives, Passive Voice, Used To, and Reported Speech in English
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Modal Perfects: Usage and Examples
| MODAL PERFECT | USES | EXAMPLES |
| COULD HAVE | The ability to do something in the past, but it was not done. | The children were tired. They could have stopped to rest. (Los niños estaban cansados. Podrían haber parado a descansar). |
| CAN’T / COULDN’T HAVE | Certainty that something did not happen. | Pam can’t / couldn’t have performed at the concert. She was ill. (Pam no puede/pudo haber tocado en el concierto. Estaba enferma). |
| MAY / MIGHT HAVE | An assumption about something that happened in the past. | He may / might have lost the tickets. (Puede que haya perdido las entradas). |
| MUST HAVE | A certainty or logical conclusion about an event in the past. | It must have been exciting for her to perform in front of thousands of people. (Tiene |
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