Conjugación del verbo inglés
COULD COMPLAIN

Verbo regular: complain - complained - complained

Afirmación

Forma simple	Forma con V-ing
I could complain you could complain he could complain we could complain you could complain they could complain	I could be complaining you could be complaining he could be complaining we could be complaining you could be complaining they could be complaining
Perfecto	Perfecto con V-ing
I could have complained you could have complained he could have complained we could have complained you could have complained they could have complained	I could have been complaining you could have been complaining he could have been complaining we could have been complaining you could have been complaining they could have been complaining

Negación

Forma simple	Forma con V-ing
I couldn't complain you couldn't complain he couldn't complain we couldn't complain you couldn't complain they couldn't complain	I couldn't be complaining you couldn't be complaining he couldn't be complaining we couldn't be complaining you couldn't be complaining they couldn't be complaining
Perfecto	Perfecto con V-ing
I couldn't have complained you couldn't have complained he couldn't have complained we couldn't have complained you couldn't have complained they couldn't have complained	I couldn't have been complaining you couldn't have been complaining he couldn't have been complaining we couldn't have been complaining you couldn't have been complaining they couldn't have been complaining

Forma interrogativa

Forma simple	Forma con V-ing
could I complain? could you complain? could he complain? could we complain? could you complain? could they complain?	could I be complaining? could you be complaining? could he be complaining? could we be complaining? could you be complaining? could they be complaining?
Perfecto	Perfecto con V-ing
could I have complained? could you have complained? could he have complained? could we have complained? could you have complained? could they have complained?	could I have been complaining? could you have been complaining? could he have been complaining? could we have been complaining? could you have been complaining? could they have been complaining?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I complain? couldn't you complain? couldn't he complain? couldn't we complain? couldn't you complain? couldn't they complain?	couldn't I be complaining? couldn't you be complaining? couldn't he be complaining? couldn't we be complaining? couldn't you be complaining? couldn't they be complaining?
Perfecto	Perfecto con V-ing
couldn't I have complained? couldn't you have complained? couldn't he have complained? couldn't we have complained? couldn't you have complained? couldn't they have complained?	couldn't I have been complaining? couldn't you have been complaining? couldn't he have been complaining? couldn't we have been complaining? couldn't you have been complaining? couldn't they have been complaining?