could apologise
Verbo regular: apologise - apologised- apologised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could apologise
you could apologise
he could apologise
we could apologise
you could apologise
they could apologise 	I could be apologising
you could be apologising
he could be apologising
we could be apologising
you could be apologising
they could be apologising	I could have apologised
you could have apologised
he could have apologised
we could have apologised
you could have apologised
they could have apologised	I could have been apologising
you could have been apologising
he could have been apologising
we could have been apologising
you could have been apologising
they could have been apologising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't apologise
you couldn't apologise
he couldn't apologise
we couldn't apologise
you couldn't apologise
they couldn't apologise 	I couldn't be apologising
you couldn't be apologising
he couldn't be apologising
we couldn't be apologising
you couldn't be apologising
they couldn't be apologising	I couldn't have apologised
you couldn't have apologised
he couldn't have apologised
we couldn't have apologised
you couldn't have apologised
they couldn't have apologised	I couldn't have been apologising
you couldn't have been apologising
he couldn't have been apologising
we couldn't have been apologising
you couldn't have been apologising
they couldn't have been apologising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I apologise?
could you apologise?
could he apologise?
could we apologise?
could you apologise?
could they apologise? 	could I be apologising?
could you be apologising?
could he be apologising?
could we be apologising?
could you be apologising?
could they be apologising? 	could I have apologised?
could you have apologised?
could he have apologised?
could we have apologised?
could you have apologised?
could they have apologised? 	could I have been apologising?
could you have been apologising?
could he have been apologising?
could we have been apologising?
could you have been apologising?
could they have been apologising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I apologise?
couldn't you apologise?
couldn't he apologise?
couldn't we apologise?
couldn't you apologise?
couldn't they apologise? 	couldn't I be apologising?
couldn't you be apologising?
couldn't he be apologising?
couldn't we be apologising?
couldn't you be apologising?
couldn't they be apologising? 	couldn't I have apologised?
couldn't you have apologised?
couldn't he have apologised?
couldn't we have apologised?
couldn't you have apologised?
couldn't they have apologised? 	couldn't I have been apologising?
couldn't you have been apologising?
couldn't he have been apologising?
couldn't we have been apologising?
couldn't you have been apologising?
couldn't they have been apologising?