Tabla de Gramática Inglesa: Modales, Tiempos Verbales, Voz Pasiva y Preposiciones
Modales de Inglés
Habilidad (ability): can = be able to / could
Posibilidad (possibility): can / could / may / might
Ofrecimiento (offer): can / could
Petición (request): can / could / may / would
Ausencia de obligación (no obligation): don't have to = needn't + infinitivo
Obligación (impuesta desde fuera): have to / must + infinitivo
Prohibición: mustn't + infinitivo
Consejo (advice): should / ought to / had better
Tiempos Verbales en Voz Activa y Pasiva
Presente Simple: opens / open → is / are opened
Presente Continuo: is / are opening → is / are being opened
Pasado Simple: opened → was / were opened
Pasado Continuo: was / were opening → was / were being opened
Presente Perfecto: has / have opened → has / have been opened
Pasado Perfecto