Conjugación del verbo inglés
MUST GRIN

Verbo regular: grin - grinned - grinned

Afirmación

Forma simple	Forma con V-ing
I must grin you must grin he must grin we must grin you must grin they must grin	I must be grinning you must be grinning he must be grinning we must be grinning you must be grinning they must be grinning
Perfecto	Perfecto con V-ing
I must have grinned you must have grinned he must have grinned we must have grinned you must have grinned they must have grinned	I must have been grinning you must have been grinning he must have been grinning we must have been grinning you must have been grinning they must have been grinning

Negación

Forma simple	Forma con V-ing
I mustn't grin you mustn't grin he mustn't grin we mustn't grin you mustn't grin they mustn't grin	I mustn't be grinning you mustn't be grinning he mustn't be grinning we mustn't be grinning you mustn't be grinning they mustn't be grinning
Perfecto	Perfecto con V-ing
I mustn't have grinned you mustn't have grinned he mustn't have grinned we mustn't have grinned you mustn't have grinned they mustn't have grinned	I mustn't have been grinning you mustn't have been grinning he mustn't have been grinning we mustn't have been grinning you mustn't have been grinning they mustn't have been grinning

Forma interrogativa

Forma simple	Forma con V-ing
must I grin? must you grin? must he grin? must we grin? must you grin? must they grin?	must I be grinning? must you be grinning? must he be grinning? must we be grinning? must you be grinning? must they be grinning?
Perfecto	Perfecto con V-ing
must I have grinned? must you have grinned? must he have grinned? must we have grinned? must you have grinned? must they have grinned?	must I have been grinning? must you have been grinning? must he have been grinning? must we have been grinning? must you have been grinning? must they have been grinning?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I grin? mustn't you grin? mustn't he grin? mustn't we grin? mustn't you grin? mustn't they grin?	mustn't I be grinning? mustn't you be grinning? mustn't he be grinning? mustn't we be grinning? mustn't you be grinning? mustn't they be grinning?
Perfecto	Perfecto con V-ing
mustn't I have grinned? mustn't you have grinned? mustn't he have grinned? mustn't we have grinned? mustn't you have grinned? mustn't they have grinned?	mustn't I have been grinning? mustn't you have been grinning? mustn't he have been grinning? mustn't we have been grinning? mustn't you have been grinning? mustn't they have been grinning?