must shelter
Verbo regular: shelter - sheltered- sheltered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must shelter
you must shelter
he must shelter
we must shelter
you must shelter
they must shelter 	I must be sheltering
you must be sheltering
he must be sheltering
we must be sheltering
you must be sheltering
they must be sheltering	I must have sheltered
you must have sheltered
he must have sheltered
we must have sheltered
you must have sheltered
they must have sheltered	I must have been sheltering
you must have been sheltering
he must have been sheltering
we must have been sheltering
you must have been sheltering
they must have been sheltering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't shelter
you mustn't shelter
he mustn't shelter
we mustn't shelter
you mustn't shelter
they mustn't shelter 	I mustn't be sheltering
you mustn't be sheltering
he mustn't be sheltering
we mustn't be sheltering
you mustn't be sheltering
they mustn't be sheltering	I mustn't have sheltered
you mustn't have sheltered
he mustn't have sheltered
we mustn't have sheltered
you mustn't have sheltered
they mustn't have sheltered	I mustn't have been sheltering
you mustn't have been sheltering
he mustn't have been sheltering
we mustn't have been sheltering
you mustn't have been sheltering
they mustn't have been sheltering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I shelter?
must you shelter?
must he shelter?
must we shelter?
must you shelter?
must they shelter? 	must I be sheltering?
must you be sheltering?
must he be sheltering?
must we be sheltering?
must you be sheltering?
must they be sheltering? 	must I have sheltered?
must you have sheltered?
must he have sheltered?
must we have sheltered?
must you have sheltered?
must they have sheltered? 	must I have been sheltering?
must you have been sheltering?
must he have been sheltering?
must we have been sheltering?
must you have been sheltering?
must they have been sheltering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I shelter?
mustn't you shelter?
mustn't he shelter?
mustn't we shelter?
mustn't you shelter?
mustn't they shelter? 	mustn't I be sheltering?
mustn't you be sheltering?
mustn't he be sheltering?
mustn't we be sheltering?
mustn't you be sheltering?
mustn't they be sheltering? 	mustn't I have sheltered?
mustn't you have sheltered?
mustn't he have sheltered?
mustn't we have sheltered?
mustn't you have sheltered?
mustn't they have sheltered? 	mustn't I have been sheltering?
mustn't you have been sheltering?
mustn't he have been sheltering?
mustn't we have been sheltering?
mustn't you have been sheltering?
mustn't they have been sheltering?