must water
Verbo regular: water - watered- watered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must water
you must water
she must water
we must water
you must water
they must water 	I must be watering
you must be watering
she must be watering
we must be watering
you must be watering
they must be watering	I must have watered
you must have watered
she must have watered
we must have watered
you must have watered
they must have watered	I must have been watering
you must have been watering
she must have been watering
we must have been watering
you must have been watering
they must have been watering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not water
you must not water
she must not water
we must not water
you must not water
they must not water 	I must not be watering
you must not be watering
she must not be watering
we must not be watering
you must not be watering
they must not be watering	I must not have watered
you must not have watered
she must not have watered
we must not have watered
you must not have watered
they must not have watered	I must not have been watering
you must not have been watering
she must not have been watering
we must not have been watering
you must not have been watering
they must not have been watering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I water?
must you water?
must she water?
must we water?
must you water?
must they water? 	must I be watering?
must you be watering?
must she be watering?
must we be watering?
must you be watering?
must they be watering? 	must I have watered?
must you have watered?
must she have watered?
must we have watered?
must you have watered?
must they have watered? 	must I have been watering?
must you have been watering?
must she have been watering?
must we have been watering?
must you have been watering?
must they have been watering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not water?
must you not water?
must she not water?
must we not water?
must you not water?
must they not water? 	must I not be watering?
must you not be watering?
must she not be watering?
must we not be watering?
must you not be watering?
must they not be watering? 	must I not have watered?
must you not have watered?
must she not have watered?
must we not have watered?
must you not have watered?
must they not have watered? 	must I not have been watering?
must you not have been watering?
must she not have been watering?
must we not have been watering?
must you not have been watering?
must they not have been watering?