must cover
Verbo regular: cover - covered- covered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cover
you must cover
he must cover
we must cover
you must cover
they must cover 	I must be covering
you must be covering
he must be covering
we must be covering
you must be covering
they must be covering	I must have covered
you must have covered
he must have covered
we must have covered
you must have covered
they must have covered	I must have been covering
you must have been covering
he must have been covering
we must have been covering
you must have been covering
they must have been covering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't cover
you mustn't cover
he mustn't cover
we mustn't cover
you mustn't cover
they mustn't cover 	I mustn't be covering
you mustn't be covering
he mustn't be covering
we mustn't be covering
you mustn't be covering
they mustn't be covering	I mustn't have covered
you mustn't have covered
he mustn't have covered
we mustn't have covered
you mustn't have covered
they mustn't have covered	I mustn't have been covering
you mustn't have been covering
he mustn't have been covering
we mustn't have been covering
you mustn't have been covering
they mustn't have been covering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cover?
must you cover?
must he cover?
must we cover?
must you cover?
must they cover? 	must I be covering?
must you be covering?
must he be covering?
must we be covering?
must you be covering?
must they be covering? 	must I have covered?
must you have covered?
must he have covered?
must we have covered?
must you have covered?
must they have covered? 	must I have been covering?
must you have been covering?
must he have been covering?
must we have been covering?
must you have been covering?
must they have been covering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I cover?
mustn't you cover?
mustn't he cover?
mustn't we cover?
mustn't you cover?
mustn't they cover? 	mustn't I be covering?
mustn't you be covering?
mustn't he be covering?
mustn't we be covering?
mustn't you be covering?
mustn't they be covering? 	mustn't I have covered?
mustn't you have covered?
mustn't he have covered?
mustn't we have covered?
mustn't you have covered?
mustn't they have covered? 	mustn't I have been covering?
mustn't you have been covering?
mustn't he have been covering?
mustn't we have been covering?
mustn't you have been covering?
mustn't they have been covering?