must knife
Verbo regolare: knife - knifed- knifed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must knife
you must knife
he must knife
we must knife
you must knife
they must knife 	I must be knifing
you must be knifing
he must be knifing
we must be knifing
you must be knifing
they must be knifing	I must have knifed
you must have knifed
he must have knifed
we must have knifed
you must have knifed
they must have knifed	I must have been knifing
you must have been knifing
he must have been knifing
we must have been knifing
you must have been knifing
they must have been knifing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not knife
you must not knife
he must not knife
we must not knife
you must not knife
they must not knife 	I must not be knifing
you must not be knifing
he must not be knifing
we must not be knifing
you must not be knifing
they must not be knifing	I must not have knifed
you must not have knifed
he must not have knifed
we must not have knifed
you must not have knifed
they must not have knifed	I must not have been knifing
you must not have been knifing
he must not have been knifing
we must not have been knifing
you must not have been knifing
they must not have been knifing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I knife?
must you knife?
must he knife?
must we knife?
must you knife?
must they knife? 	must I be knifing?
must you be knifing?
must he be knifing?
must we be knifing?
must you be knifing?
must they be knifing? 	must I have knifed?
must you have knifed?
must he have knifed?
must we have knifed?
must you have knifed?
must they have knifed? 	must I have been knifing?
must you have been knifing?
must he have been knifing?
must we have been knifing?
must you have been knifing?
must they have been knifing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not knife?
must you not knife?
must he not knife?
must we not knife?
must you not knife?
must they not knife? 	must I not be knifing?
must you not be knifing?
must he not be knifing?
must we not be knifing?
must you not be knifing?
must they not be knifing? 	must I not have knifed?
must you not have knifed?
must he not have knifed?
must we not have knifed?
must you not have knifed?
must they not have knifed? 	must I not have been knifing?
must you not have been knifing?
must he not have been knifing?
must we not have been knifing?
must you not have been knifing?
must they not have been knifing?