Se usa must have o su contracción must’ve para indicar que algo ocurrió en el pasado y que lo hizo con una probabilidad grande, después de escribe el verbo principal en pasado participio.
Ejemplos:
- She must have taken the children with her to Houston. (Ella debe haber llevado a los niños con ella a Houston)
- He must have lent us the money which we need. (Él debe habernos prestado el dinero que necesitamos)
- She must have been back by noon. (Ella debe haber regresado para mediodía)
- She must have returned later. (Ella debe haber regresado más tarde)
- You must have learnt at least five new words every day. (Tú debes haber aprendido al menos cinco palabras cada día)
- You must have called her yesterday. (Tú la debes haber llamado ayer)
- You must have seen her yesterday. (Tú debes haberla visto ayer)
- She must have tried to finish her projects on time. (Ella debe haber tratado de terminar sus proyectos a tiempo)
- They must have helped you with your work. (Ellos deben haberte ayudado con tu trabajo)
- You must have gone by plane. (Tú debes haberte ido en avión)
- He must have saved some money each week. (Él debe haber ahorrado algo de dinero cada semana)
- He must have paid more attention to what the teacher says. (Él debe haber puesto más atención a lo que dice el maestro)
- It must have rained yesterday. (Debe haber llovido ayer)
- We must have asked permission before doing it. (Nosotros debemos haber pedido permiso antes de hacerlo)
- He must have spent more time on his homework. (Él debe haber invertido más tiempo en su tarea)
- He must have felt better yesterday. (Él debe haberse sentido mejor ayer)
- You must have gone home. (Tú debes haber ido a casa)
- We must have written them a letter. (Nosotros debemos haberles escrito una carta)
- You must have stayed there all summer. (Tú te debes haber quedado allá todo el verano)
- We must have sent plans yesterday. (Nosotros debemos haber enviado los planes ayer)
- You must have prepared your work more carefully. (Tú debes haber preparado tu trabajo más cuidadosamente)
- We must have stayed here at least an hour. (Nosotros debemos haber estado aquí por lo menos una hora)
- She must have sent it by airmail. (Ella debe haberlo enviado por correo aéreo)
- The kids must have worm their jackets. (Los niños deben haber usado sus chaquetas)
- You must have taken this package to the post office. (Tú debes haber llevado este paquete a la oficina de correos)
- He must have taken a earlier flight. (Él debe haber tomado un vuelo más temprano)
- You must have visited me last weekend. (Tú debes haberme visitado la semana pasada)
- I must have gone to the dentist last week. (Yo debo haber ido al dentista la semana pasada)
- You must have waited in his office. (Tú debes haber esperado en su oficina)
- She must have gone to the beach with us. (Ella debe haber ido a la playa con nosotros)