must narrow
Verbo regular: narrow - narrowed- narrowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must narrow
you must narrow
he must narrow
we must narrow
you must narrow
they must narrow 	I must be narrowing
you must be narrowing
he must be narrowing
we must be narrowing
you must be narrowing
they must be narrowing	I must have narrowed
you must have narrowed
he must have narrowed
we must have narrowed
you must have narrowed
they must have narrowed	I must have been narrowing
you must have been narrowing
he must have been narrowing
we must have been narrowing
you must have been narrowing
they must have been narrowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't narrow
you mustn't narrow
he mustn't narrow
we mustn't narrow
you mustn't narrow
they mustn't narrow 	I mustn't be narrowing
you mustn't be narrowing
he mustn't be narrowing
we mustn't be narrowing
you mustn't be narrowing
they mustn't be narrowing	I mustn't have narrowed
you mustn't have narrowed
he mustn't have narrowed
we mustn't have narrowed
you mustn't have narrowed
they mustn't have narrowed	I mustn't have been narrowing
you mustn't have been narrowing
he mustn't have been narrowing
we mustn't have been narrowing
you mustn't have been narrowing
they mustn't have been narrowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I narrow?
must you narrow?
must he narrow?
must we narrow?
must you narrow?
must they narrow? 	must I be narrowing?
must you be narrowing?
must he be narrowing?
must we be narrowing?
must you be narrowing?
must they be narrowing? 	must I have narrowed?
must you have narrowed?
must he have narrowed?
must we have narrowed?
must you have narrowed?
must they have narrowed? 	must I have been narrowing?
must you have been narrowing?
must he have been narrowing?
must we have been narrowing?
must you have been narrowing?
must they have been narrowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I narrow?
mustn't you narrow?
mustn't he narrow?
mustn't we narrow?
mustn't you narrow?
mustn't they narrow? 	mustn't I be narrowing?
mustn't you be narrowing?
mustn't he be narrowing?
mustn't we be narrowing?
mustn't you be narrowing?
mustn't they be narrowing? 	mustn't I have narrowed?
mustn't you have narrowed?
mustn't he have narrowed?
mustn't we have narrowed?
mustn't you have narrowed?
mustn't they have narrowed? 	mustn't I have been narrowing?
mustn't you have been narrowing?
mustn't he have been narrowing?
mustn't we have been narrowing?
mustn't you have been narrowing?
mustn't they have been narrowing?