must cultivate
Verbo regular: cultivate - cultivated- cultivated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cultivate
you must cultivate
he must cultivate
we must cultivate
you must cultivate
they must cultivate 	I must be cultivating
you must be cultivating
he must be cultivating
we must be cultivating
you must be cultivating
they must be cultivating	I must have cultivated
you must have cultivated
he must have cultivated
we must have cultivated
you must have cultivated
they must have cultivated	I must have been cultivating
you must have been cultivating
he must have been cultivating
we must have been cultivating
you must have been cultivating
they must have been cultivating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't cultivate
you mustn't cultivate
he mustn't cultivate
we mustn't cultivate
you mustn't cultivate
they mustn't cultivate 	I mustn't be cultivating
you mustn't be cultivating
he mustn't be cultivating
we mustn't be cultivating
you mustn't be cultivating
they mustn't be cultivating	I mustn't have cultivated
you mustn't have cultivated
he mustn't have cultivated
we mustn't have cultivated
you mustn't have cultivated
they mustn't have cultivated	I mustn't have been cultivating
you mustn't have been cultivating
he mustn't have been cultivating
we mustn't have been cultivating
you mustn't have been cultivating
they mustn't have been cultivating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cultivate?
must you cultivate?
must he cultivate?
must we cultivate?
must you cultivate?
must they cultivate? 	must I be cultivating?
must you be cultivating?
must he be cultivating?
must we be cultivating?
must you be cultivating?
must they be cultivating? 	must I have cultivated?
must you have cultivated?
must he have cultivated?
must we have cultivated?
must you have cultivated?
must they have cultivated? 	must I have been cultivating?
must you have been cultivating?
must he have been cultivating?
must we have been cultivating?
must you have been cultivating?
must they have been cultivating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I cultivate?
mustn't you cultivate?
mustn't he cultivate?
mustn't we cultivate?
mustn't you cultivate?
mustn't they cultivate? 	mustn't I be cultivating?
mustn't you be cultivating?
mustn't he be cultivating?
mustn't we be cultivating?
mustn't you be cultivating?
mustn't they be cultivating? 	mustn't I have cultivated?
mustn't you have cultivated?
mustn't he have cultivated?
mustn't we have cultivated?
mustn't you have cultivated?
mustn't they have cultivated? 	mustn't I have been cultivating?
mustn't you have been cultivating?
mustn't he have been cultivating?
mustn't we have been cultivating?
mustn't you have been cultivating?
mustn't they have been cultivating?