I must yelp you must yelp she must yelp we must yelp you must yelp they must yelp
Forma com V-ing
I must be yelping you must be yelping she must be yelping we must be yelping you must be yelping they must be yelping
Perfeito
I must have yelped you must have yelped she must have yelped we must have yelped you must have yelped they must have yelped
Perfeito com V-ing
I must have been yelping you must have been yelping she must have been yelping we must have been yelping you must have been yelping they must have been yelping
Negação
Forma simple
I mustn't yelp you mustn't yelp she mustn't yelp we mustn't yelp you mustn't yelp they mustn't yelp
Forma com V-ing
I mustn't be yelping you mustn't be yelping she mustn't be yelping we mustn't be yelping you mustn't be yelping they mustn't be yelping
Perfeito
I mustn't have yelped you mustn't have yelped she mustn't have yelped we mustn't have yelped you mustn't have yelped they mustn't have yelped
Perfeito com V-ing
I mustn't have been yelping you mustn't have been yelping she mustn't have been yelping we mustn't have been yelping you mustn't have been yelping they mustn't have been yelping
Forma interrogativa
Forma simple
must I yelp? must you yelp? must she yelp? must we yelp? must you yelp? must they yelp?
Forma com V-ing
must I be yelping? must you be yelping? must she be yelping? must we be yelping? must you be yelping? must they be yelping?
Perfeito
must I have yelped? must you have yelped? must she have yelped? must we have yelped? must you have yelped? must they have yelped?
Perfeito com V-ing
must I have been yelping? must you have been yelping? must she have been yelping? must we have been yelping? must you have been yelping? must they have been yelping?
Forma interro-Negação
Forma simple
mustn't I yelp? mustn't you yelp? mustn't she yelp? mustn't we yelp? mustn't you yelp? mustn't they yelp?
Forma com V-ing
mustn't I be yelping? mustn't you be yelping? mustn't she be yelping? mustn't we be yelping? mustn't you be yelping? mustn't they be yelping?
Perfeito
mustn't I have yelped? mustn't you have yelped? mustn't she have yelped? mustn't we have yelped? mustn't you have yelped? mustn't they have yelped?
Perfeito com V-ing
mustn't I have been yelping? mustn't you have been yelping? mustn't she have been yelping? mustn't we have been yelping? mustn't you have been yelping? mustn't they have been yelping?