must strive
Verbo irregolare: strive - strived- striven

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must strive
you must strive
he must strive
we must strive
you must strive
they must strive 	I must be striving
you must be striving
he must be striving
we must be striving
you must be striving
they must be striving	I must have striven
you must have striven
he must have striven
we must have striven
you must have striven
they must have striven	I must have been striving
you must have been striving
he must have been striving
we must have been striving
you must have been striving
they must have been striving	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't strive
you mustn't strive
he mustn't strive
we mustn't strive
you mustn't strive
they mustn't strive 	I mustn't be striving
you mustn't be striving
he mustn't be striving
we mustn't be striving
you mustn't be striving
they mustn't be striving	I mustn't have striven
you mustn't have striven
he mustn't have striven
we mustn't have striven
you mustn't have striven
they mustn't have striven	I mustn't have been striving
you mustn't have been striving
he mustn't have been striving
we mustn't have been striving
you mustn't have been striving
they mustn't have been striving	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I strive?
must you strive?
must he strive?
must we strive?
must you strive?
must they strive? 	must I be striving?
must you be striving?
must he be striving?
must we be striving?
must you be striving?
must they be striving? 	must I have striven?
must you have striven?
must he have striven?
must we have striven?
must you have striven?
must they have striven? 	must I have been striving?
must you have been striving?
must he have been striving?
must we have been striving?
must you have been striving?
must they have been striving? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I strive?
mustn't you strive?
mustn't he strive?
mustn't we strive?
mustn't you strive?
mustn't they strive? 	mustn't I be striving?
mustn't you be striving?
mustn't he be striving?
mustn't we be striving?
mustn't you be striving?
mustn't they be striving? 	mustn't I have striven?
mustn't you have striven?
mustn't he have striven?
mustn't we have striven?
mustn't you have striven?
mustn't they have striven? 	mustn't I have been striving?
mustn't you have been striving?
mustn't he have been striving?
mustn't we have been striving?
mustn't you have been striving?
mustn't they have been striving?