must skate
Verbo regular: skate - skated- skated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must skate
you must skate
he must skate
we must skate
you must skate
they must skate 	I must be skating
you must be skating
he must be skating
we must be skating
you must be skating
they must be skating	I must have skated
you must have skated
he must have skated
we must have skated
you must have skated
they must have skated	I must have been skating
you must have been skating
he must have been skating
we must have been skating
you must have been skating
they must have been skating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not skate
you must not skate
he must not skate
we must not skate
you must not skate
they must not skate 	I must not be skating
you must not be skating
he must not be skating
we must not be skating
you must not be skating
they must not be skating	I must not have skated
you must not have skated
he must not have skated
we must not have skated
you must not have skated
they must not have skated	I must not have been skating
you must not have been skating
he must not have been skating
we must not have been skating
you must not have been skating
they must not have been skating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I skate?
must you skate?
must he skate?
must we skate?
must you skate?
must they skate? 	must I be skating?
must you be skating?
must he be skating?
must we be skating?
must you be skating?
must they be skating? 	must I have skated?
must you have skated?
must he have skated?
must we have skated?
must you have skated?
must they have skated? 	must I have been skating?
must you have been skating?
must he have been skating?
must we have been skating?
must you have been skating?
must they have been skating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not skate?
must you not skate?
must he not skate?
must we not skate?
must you not skate?
must they not skate? 	must I not be skating?
must you not be skating?
must he not be skating?
must we not be skating?
must you not be skating?
must they not be skating? 	must I not have skated?
must you not have skated?
must he not have skated?
must we not have skated?
must you not have skated?
must they not have skated? 	must I not have been skating?
must you not have been skating?
must he not have been skating?
must we not have been skating?
must you not have been skating?
must they not have been skating?