I can inject you can inject he can inject we can inject you can inject they can inject
Forma con V-ing
I can be injecting you can be injecting he can be injecting we can be injecting you can be injecting they can be injecting
Perfecto
I can have injected you can have injected he can have injected we can have injected you can have injected they can have injected
Perfecto con V-ing
I can have been injecting you can have been injecting he can have been injecting we can have been injecting you can have been injecting they can have been injecting
Negación
Forma simple
I can't inject you can't inject he can't inject we can't inject you can't inject they can't inject
Forma con V-ing
I can't be injecting you can't be injecting he can't be injecting we can't be injecting you can't be injecting they can't be injecting
Perfecto
I can't have injected you can't have injected he can't have injected we can't have injected you can't have injected they can't have injected
Perfecto con V-ing
I can't have been injecting you can't have been injecting he can't have been injecting we can't have been injecting you can't have been injecting they can't have been injecting
Forma interrogativa
Forma simple
can I inject? can you inject? can he inject? can we inject? can you inject? can they inject?
Forma con V-ing
can I be injecting? can you be injecting? can he be injecting? can we be injecting? can you be injecting? can they be injecting?
Perfecto
can I have injected? can you have injected? can he have injected? can we have injected? can you have injected? can they have injected?
Perfecto con V-ing
can I have been injecting? can you have been injecting? can he have been injecting? can we have been injecting? can you have been injecting? can they have been injecting?
Forma interro-negativa
Forma simple
can't I inject? can't you inject? can't he inject? can't we inject? can't you inject? can't they inject?
Forma con V-ing
can't I be injecting? can't you be injecting? can't he be injecting? can't we be injecting? can't you be injecting? can't they be injecting?
Perfecto
can't I have injected? can't you have injected? can't he have injected? can't we have injected? can't you have injected? can't they have injected?
Perfecto con V-ing
can't I have been injecting? can't you have been injecting? can't he have been injecting? can't we have been injecting? can't you have been injecting? can't they have been injecting?