Conjugación del verbo inglés
MUST RETRIEVE

Verbo regular: retrieve - retrieved - retrieved

Afirmación

Forma simple	Forma con V-ing
I must retrieve you must retrieve he must retrieve we must retrieve you must retrieve they must retrieve	I must be retrieving you must be retrieving he must be retrieving we must be retrieving you must be retrieving they must be retrieving
Perfecto	Perfecto con V-ing
I must have retrieved you must have retrieved he must have retrieved we must have retrieved you must have retrieved they must have retrieved	I must have been retrieving you must have been retrieving he must have been retrieving we must have been retrieving you must have been retrieving they must have been retrieving

Negación

Forma simple	Forma con V-ing
I mustn't retrieve you mustn't retrieve he mustn't retrieve we mustn't retrieve you mustn't retrieve they mustn't retrieve	I mustn't be retrieving you mustn't be retrieving he mustn't be retrieving we mustn't be retrieving you mustn't be retrieving they mustn't be retrieving
Perfecto	Perfecto con V-ing
I mustn't have retrieved you mustn't have retrieved he mustn't have retrieved we mustn't have retrieved you mustn't have retrieved they mustn't have retrieved	I mustn't have been retrieving you mustn't have been retrieving he mustn't have been retrieving we mustn't have been retrieving you mustn't have been retrieving they mustn't have been retrieving

Forma interrogativa

Forma simple	Forma con V-ing
must I retrieve? must you retrieve? must he retrieve? must we retrieve? must you retrieve? must they retrieve?	must I be retrieving? must you be retrieving? must he be retrieving? must we be retrieving? must you be retrieving? must they be retrieving?
Perfecto	Perfecto con V-ing
must I have retrieved? must you have retrieved? must he have retrieved? must we have retrieved? must you have retrieved? must they have retrieved?	must I have been retrieving? must you have been retrieving? must he have been retrieving? must we have been retrieving? must you have been retrieving? must they have been retrieving?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I retrieve? mustn't you retrieve? mustn't he retrieve? mustn't we retrieve? mustn't you retrieve? mustn't they retrieve?	mustn't I be retrieving? mustn't you be retrieving? mustn't he be retrieving? mustn't we be retrieving? mustn't you be retrieving? mustn't they be retrieving?
Perfecto	Perfecto con V-ing
mustn't I have retrieved? mustn't you have retrieved? mustn't he have retrieved? mustn't we have retrieved? mustn't you have retrieved? mustn't they have retrieved?	mustn't I have been retrieving? mustn't you have been retrieving? mustn't he have been retrieving? mustn't we have been retrieving? mustn't you have been retrieving? mustn't they have been retrieving?