must zip
Verbo regular: zip - zipped- zipped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must zip
you must zip
he must zip
we must zip
you must zip
they must zip 	I must be zipping
you must be zipping
he must be zipping
we must be zipping
you must be zipping
they must be zipping	I must have zipped
you must have zipped
he must have zipped
we must have zipped
you must have zipped
they must have zipped	I must have been zipping
you must have been zipping
he must have been zipping
we must have been zipping
you must have been zipping
they must have been zipping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't zip
you mustn't zip
he mustn't zip
we mustn't zip
you mustn't zip
they mustn't zip 	I mustn't be zipping
you mustn't be zipping
he mustn't be zipping
we mustn't be zipping
you mustn't be zipping
they mustn't be zipping	I mustn't have zipped
you mustn't have zipped
he mustn't have zipped
we mustn't have zipped
you mustn't have zipped
they mustn't have zipped	I mustn't have been zipping
you mustn't have been zipping
he mustn't have been zipping
we mustn't have been zipping
you mustn't have been zipping
they mustn't have been zipping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I zip?
must you zip?
must he zip?
must we zip?
must you zip?
must they zip? 	must I be zipping?
must you be zipping?
must he be zipping?
must we be zipping?
must you be zipping?
must they be zipping? 	must I have zipped?
must you have zipped?
must he have zipped?
must we have zipped?
must you have zipped?
must they have zipped? 	must I have been zipping?
must you have been zipping?
must he have been zipping?
must we have been zipping?
must you have been zipping?
must they have been zipping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I zip?
mustn't you zip?
mustn't he zip?
mustn't we zip?
mustn't you zip?
mustn't they zip? 	mustn't I be zipping?
mustn't you be zipping?
mustn't he be zipping?
mustn't we be zipping?
mustn't you be zipping?
mustn't they be zipping? 	mustn't I have zipped?
mustn't you have zipped?
mustn't he have zipped?
mustn't we have zipped?
mustn't you have zipped?
mustn't they have zipped? 	mustn't I have been zipping?
mustn't you have been zipping?
mustn't he have been zipping?
mustn't we have been zipping?
mustn't you have been zipping?
mustn't they have been zipping?