I must woof you must woof he must woof we must woof you must woof they must woof
Forma con V-ing
I must be woofing you must be woofing he must be woofing we must be woofing you must be woofing they must be woofing
Perfecto
I must have woofed you must have woofed he must have woofed we must have woofed you must have woofed they must have woofed
Perfecto con V-ing
I must have been woofing you must have been woofing he must have been woofing we must have been woofing you must have been woofing they must have been woofing
Negación
Forma simple
I mustn't woof you mustn't woof he mustn't woof we mustn't woof you mustn't woof they mustn't woof
Forma con V-ing
I mustn't be woofing you mustn't be woofing he mustn't be woofing we mustn't be woofing you mustn't be woofing they mustn't be woofing
Perfecto
I mustn't have woofed you mustn't have woofed he mustn't have woofed we mustn't have woofed you mustn't have woofed they mustn't have woofed
Perfecto con V-ing
I mustn't have been woofing you mustn't have been woofing he mustn't have been woofing we mustn't have been woofing you mustn't have been woofing they mustn't have been woofing
Forma interrogativa
Forma simple
must I woof? must you woof? must he woof? must we woof? must you woof? must they woof?
Forma con V-ing
must I be woofing? must you be woofing? must he be woofing? must we be woofing? must you be woofing? must they be woofing?
Perfecto
must I have woofed? must you have woofed? must he have woofed? must we have woofed? must you have woofed? must they have woofed?
Perfecto con V-ing
must I have been woofing? must you have been woofing? must he have been woofing? must we have been woofing? must you have been woofing? must they have been woofing?
Forma interro-negativa
Forma simple
mustn't I woof? mustn't you woof? mustn't he woof? mustn't we woof? mustn't you woof? mustn't they woof?
Forma con V-ing
mustn't I be woofing? mustn't you be woofing? mustn't he be woofing? mustn't we be woofing? mustn't you be woofing? mustn't they be woofing?
Perfecto
mustn't I have woofed? mustn't you have woofed? mustn't he have woofed? mustn't we have woofed? mustn't you have woofed? mustn't they have woofed?
Perfecto con V-ing
mustn't I have been woofing? mustn't you have been woofing? mustn't he have been woofing? mustn't we have been woofing? mustn't you have been woofing? mustn't they have been woofing?