must inject
Verbo regular: inject - injected- injected

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must inject
you must inject
he must inject
we must inject
you must inject
they must inject 	I must be injecting
you must be injecting
he must be injecting
we must be injecting
you must be injecting
they must be injecting	I must have injected
you must have injected
he must have injected
we must have injected
you must have injected
they must have injected	I must have been injecting
you must have been injecting
he must have been injecting
we must have been injecting
you must have been injecting
they must have been injecting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not inject
you must not inject
he must not inject
we must not inject
you must not inject
they must not inject 	I must not be injecting
you must not be injecting
he must not be injecting
we must not be injecting
you must not be injecting
they must not be injecting	I must not have injected
you must not have injected
he must not have injected
we must not have injected
you must not have injected
they must not have injected	I must not have been injecting
you must not have been injecting
he must not have been injecting
we must not have been injecting
you must not have been injecting
they must not have been injecting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I inject?
must you inject?
must he inject?
must we inject?
must you inject?
must they inject? 	must I be injecting?
must you be injecting?
must he be injecting?
must we be injecting?
must you be injecting?
must they be injecting? 	must I have injected?
must you have injected?
must he have injected?
must we have injected?
must you have injected?
must they have injected? 	must I have been injecting?
must you have been injecting?
must he have been injecting?
must we have been injecting?
must you have been injecting?
must they have been injecting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not inject?
must you not inject?
must he not inject?
must we not inject?
must you not inject?
must they not inject? 	must I not be injecting?
must you not be injecting?
must he not be injecting?
must we not be injecting?
must you not be injecting?
must they not be injecting? 	must I not have injected?
must you not have injected?
must he not have injected?
must we not have injected?
must you not have injected?
must they not have injected? 	must I not have been injecting?
must you not have been injecting?
must he not have been injecting?
must we not have been injecting?
must you not have been injecting?
must they not have been injecting?