must enhance
Verbo regular: enhance - enhanced- enhanced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must enhance
you must enhance
he must enhance
we must enhance
you must enhance
they must enhance 	I must be enhancing
you must be enhancing
he must be enhancing
we must be enhancing
you must be enhancing
they must be enhancing	I must have enhanced
you must have enhanced
he must have enhanced
we must have enhanced
you must have enhanced
they must have enhanced	I must have been enhancing
you must have been enhancing
he must have been enhancing
we must have been enhancing
you must have been enhancing
they must have been enhancing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not enhance
you must not enhance
he must not enhance
we must not enhance
you must not enhance
they must not enhance 	I must not be enhancing
you must not be enhancing
he must not be enhancing
we must not be enhancing
you must not be enhancing
they must not be enhancing	I must not have enhanced
you must not have enhanced
he must not have enhanced
we must not have enhanced
you must not have enhanced
they must not have enhanced	I must not have been enhancing
you must not have been enhancing
he must not have been enhancing
we must not have been enhancing
you must not have been enhancing
they must not have been enhancing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I enhance?
must you enhance?
must he enhance?
must we enhance?
must you enhance?
must they enhance? 	must I be enhancing?
must you be enhancing?
must he be enhancing?
must we be enhancing?
must you be enhancing?
must they be enhancing? 	must I have enhanced?
must you have enhanced?
must he have enhanced?
must we have enhanced?
must you have enhanced?
must they have enhanced? 	must I have been enhancing?
must you have been enhancing?
must he have been enhancing?
must we have been enhancing?
must you have been enhancing?
must they have been enhancing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not enhance?
must you not enhance?
must he not enhance?
must we not enhance?
must you not enhance?
must they not enhance? 	must I not be enhancing?
must you not be enhancing?
must he not be enhancing?
must we not be enhancing?
must you not be enhancing?
must they not be enhancing? 	must I not have enhanced?
must you not have enhanced?
must he not have enhanced?
must we not have enhanced?
must you not have enhanced?
must they not have enhanced? 	must I not have been enhancing?
must you not have been enhancing?
must he not have been enhancing?
must we not have been enhancing?
must you not have been enhancing?
must they not have been enhancing?