must single
Verbo regular: single - singled- singled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must single
you must single
he must single
we must single
you must single
they must single 	I must be singling
you must be singling
he must be singling
we must be singling
you must be singling
they must be singling	I must have singled
you must have singled
he must have singled
we must have singled
you must have singled
they must have singled	I must have been singling
you must have been singling
he must have been singling
we must have been singling
you must have been singling
they must have been singling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not single
you must not single
he must not single
we must not single
you must not single
they must not single 	I must not be singling
you must not be singling
he must not be singling
we must not be singling
you must not be singling
they must not be singling	I must not have singled
you must not have singled
he must not have singled
we must not have singled
you must not have singled
they must not have singled	I must not have been singling
you must not have been singling
he must not have been singling
we must not have been singling
you must not have been singling
they must not have been singling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I single?
must you single?
must he single?
must we single?
must you single?
must they single? 	must I be singling?
must you be singling?
must he be singling?
must we be singling?
must you be singling?
must they be singling? 	must I have singled?
must you have singled?
must he have singled?
must we have singled?
must you have singled?
must they have singled? 	must I have been singling?
must you have been singling?
must he have been singling?
must we have been singling?
must you have been singling?
must they have been singling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not single?
must you not single?
must he not single?
must we not single?
must you not single?
must they not single? 	must I not be singling?
must you not be singling?
must he not be singling?
must we not be singling?
must you not be singling?
must they not be singling? 	must I not have singled?
must you not have singled?
must he not have singled?
must we not have singled?
must you not have singled?
must they not have singled? 	must I not have been singling?
must you not have been singling?
must he not have been singling?
must we not have been singling?
must you not have been singling?
must they not have been singling?