Future Perfect Active in the Past
| Залог : Active --- Passive | would(should) + have + 3ф(ed) |
| Tenses | 1. Indefinite - 2. Continuous - 3. Perfect - 4. Perfect Continuous |
| 1. Present
2. Past 3. Future 4. Future in the Past |
Заменяет Future Perfect придаточного предложения когда сказуемое главного предложения в прошедшем времени. (согласование времён) I said that I should have written the letter by five o`clock |