must amuse
Verbo regular: amuse - amused- amused

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must amuse
you must amuse
he must amuse
we must amuse
you must amuse
they must amuse 	I must be amusing
you must be amusing
he must be amusing
we must be amusing
you must be amusing
they must be amusing	I must have amused
you must have amused
he must have amused
we must have amused
you must have amused
they must have amused	I must have been amusing
you must have been amusing
he must have been amusing
we must have been amusing
you must have been amusing
they must have been amusing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not amuse
you must not amuse
he must not amuse
we must not amuse
you must not amuse
they must not amuse 	I must not be amusing
you must not be amusing
he must not be amusing
we must not be amusing
you must not be amusing
they must not be amusing	I must not have amused
you must not have amused
he must not have amused
we must not have amused
you must not have amused
they must not have amused	I must not have been amusing
you must not have been amusing
he must not have been amusing
we must not have been amusing
you must not have been amusing
they must not have been amusing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I amuse?
must you amuse?
must he amuse?
must we amuse?
must you amuse?
must they amuse? 	must I be amusing?
must you be amusing?
must he be amusing?
must we be amusing?
must you be amusing?
must they be amusing? 	must I have amused?
must you have amused?
must he have amused?
must we have amused?
must you have amused?
must they have amused? 	must I have been amusing?
must you have been amusing?
must he have been amusing?
must we have been amusing?
must you have been amusing?
must they have been amusing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not amuse?
must you not amuse?
must he not amuse?
must we not amuse?
must you not amuse?
must they not amuse? 	must I not be amusing?
must you not be amusing?
must he not be amusing?
must we not be amusing?
must you not be amusing?
must they not be amusing? 	must I not have amused?
must you not have amused?
must he not have amused?
must we not have amused?
must you not have amused?
must they not have amused? 	must I not have been amusing?
must you not have been amusing?
must he not have been amusing?
must we not have been amusing?
must you not have been amusing?
must they not have been amusing?