must protect
Verbo regular: protect - protected- protected

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must protect
you must protect
he must protect
we must protect
you must protect
they must protect 	I must be protecting
you must be protecting
he must be protecting
we must be protecting
you must be protecting
they must be protecting	I must have protected
you must have protected
he must have protected
we must have protected
you must have protected
they must have protected	I must have been protecting
you must have been protecting
he must have been protecting
we must have been protecting
you must have been protecting
they must have been protecting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not protect
you must not protect
he must not protect
we must not protect
you must not protect
they must not protect 	I must not be protecting
you must not be protecting
he must not be protecting
we must not be protecting
you must not be protecting
they must not be protecting	I must not have protected
you must not have protected
he must not have protected
we must not have protected
you must not have protected
they must not have protected	I must not have been protecting
you must not have been protecting
he must not have been protecting
we must not have been protecting
you must not have been protecting
they must not have been protecting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I protect?
must you protect?
must he protect?
must we protect?
must you protect?
must they protect? 	must I be protecting?
must you be protecting?
must he be protecting?
must we be protecting?
must you be protecting?
must they be protecting? 	must I have protected?
must you have protected?
must he have protected?
must we have protected?
must you have protected?
must they have protected? 	must I have been protecting?
must you have been protecting?
must he have been protecting?
must we have been protecting?
must you have been protecting?
must they have been protecting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not protect?
must you not protect?
must he not protect?
must we not protect?
must you not protect?
must they not protect? 	must I not be protecting?
must you not be protecting?
must he not be protecting?
must we not be protecting?
must you not be protecting?
must they not be protecting? 	must I not have protected?
must you not have protected?
must he not have protected?
must we not have protected?
must you not have protected?
must they not have protected? 	must I not have been protecting?
must you not have been protecting?
must he not have been protecting?
must we not have been protecting?
must you not have been protecting?
must they not have been protecting?