must guffaw
Verbo regolare: guffaw - guffawed- guffawed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must guffaw
you must guffaw
he must guffaw
we must guffaw
you must guffaw
they must guffaw 	I must be guffawing
you must be guffawing
he must be guffawing
we must be guffawing
you must be guffawing
they must be guffawing	I must have guffawed
you must have guffawed
he must have guffawed
we must have guffawed
you must have guffawed
they must have guffawed	I must have been guffawing
you must have been guffawing
he must have been guffawing
we must have been guffawing
you must have been guffawing
they must have been guffawing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't guffaw
you mustn't guffaw
he mustn't guffaw
we mustn't guffaw
you mustn't guffaw
they mustn't guffaw 	I mustn't be guffawing
you mustn't be guffawing
he mustn't be guffawing
we mustn't be guffawing
you mustn't be guffawing
they mustn't be guffawing	I mustn't have guffawed
you mustn't have guffawed
he mustn't have guffawed
we mustn't have guffawed
you mustn't have guffawed
they mustn't have guffawed	I mustn't have been guffawing
you mustn't have been guffawing
he mustn't have been guffawing
we mustn't have been guffawing
you mustn't have been guffawing
they mustn't have been guffawing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I guffaw?
must you guffaw?
must he guffaw?
must we guffaw?
must you guffaw?
must they guffaw? 	must I be guffawing?
must you be guffawing?
must he be guffawing?
must we be guffawing?
must you be guffawing?
must they be guffawing? 	must I have guffawed?
must you have guffawed?
must he have guffawed?
must we have guffawed?
must you have guffawed?
must they have guffawed? 	must I have been guffawing?
must you have been guffawing?
must he have been guffawing?
must we have been guffawing?
must you have been guffawing?
must they have been guffawing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I guffaw?
mustn't you guffaw?
mustn't he guffaw?
mustn't we guffaw?
mustn't you guffaw?
mustn't they guffaw? 	mustn't I be guffawing?
mustn't you be guffawing?
mustn't he be guffawing?
mustn't we be guffawing?
mustn't you be guffawing?
mustn't they be guffawing? 	mustn't I have guffawed?
mustn't you have guffawed?
mustn't he have guffawed?
mustn't we have guffawed?
mustn't you have guffawed?
mustn't they have guffawed? 	mustn't I have been guffawing?
mustn't you have been guffawing?
mustn't he have been guffawing?
mustn't we have been guffawing?
mustn't you have been guffawing?
mustn't they have been guffawing?