must lift
Verbo regular: lift - lifted- lifted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must lift
you must lift
he must lift
we must lift
you must lift
they must lift 	I must be lifting
you must be lifting
he must be lifting
we must be lifting
you must be lifting
they must be lifting	I must have lifted
you must have lifted
he must have lifted
we must have lifted
you must have lifted
they must have lifted	I must have been lifting
you must have been lifting
he must have been lifting
we must have been lifting
you must have been lifting
they must have been lifting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not lift
you must not lift
he must not lift
we must not lift
you must not lift
they must not lift 	I must not be lifting
you must not be lifting
he must not be lifting
we must not be lifting
you must not be lifting
they must not be lifting	I must not have lifted
you must not have lifted
he must not have lifted
we must not have lifted
you must not have lifted
they must not have lifted	I must not have been lifting
you must not have been lifting
he must not have been lifting
we must not have been lifting
you must not have been lifting
they must not have been lifting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I lift?
must you lift?
must he lift?
must we lift?
must you lift?
must they lift? 	must I be lifting?
must you be lifting?
must he be lifting?
must we be lifting?
must you be lifting?
must they be lifting? 	must I have lifted?
must you have lifted?
must he have lifted?
must we have lifted?
must you have lifted?
must they have lifted? 	must I have been lifting?
must you have been lifting?
must he have been lifting?
must we have been lifting?
must you have been lifting?
must they have been lifting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not lift?
must you not lift?
must he not lift?
must we not lift?
must you not lift?
must they not lift? 	must I not be lifting?
must you not be lifting?
must he not be lifting?
must we not be lifting?
must you not be lifting?
must they not be lifting? 	must I not have lifted?
must you not have lifted?
must he not have lifted?
must we not have lifted?
must you not have lifted?
must they not have lifted? 	must I not have been lifting?
must you not have been lifting?
must he not have been lifting?
must we not have been lifting?
must you not have been lifting?
must they not have been lifting?