could decline
Verbo regular: decline - declined- declined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could decline
you could decline
she could decline
we could decline
you could decline
they could decline 	I could be declining
you could be declining
she could be declining
we could be declining
you could be declining
they could be declining	I could have declined
you could have declined
she could have declined
we could have declined
you could have declined
they could have declined	I could have been declining
you could have been declining
she could have been declining
we could have been declining
you could have been declining
they could have been declining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't decline
you couldn't decline
she couldn't decline
we couldn't decline
you couldn't decline
they couldn't decline 	I couldn't be declining
you couldn't be declining
she couldn't be declining
we couldn't be declining
you couldn't be declining
they couldn't be declining	I couldn't have declined
you couldn't have declined
she couldn't have declined
we couldn't have declined
you couldn't have declined
they couldn't have declined	I couldn't have been declining
you couldn't have been declining
she couldn't have been declining
we couldn't have been declining
you couldn't have been declining
they couldn't have been declining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I decline?
could you decline?
could she decline?
could we decline?
could you decline?
could they decline? 	could I be declining?
could you be declining?
could she be declining?
could we be declining?
could you be declining?
could they be declining? 	could I have declined?
could you have declined?
could she have declined?
could we have declined?
could you have declined?
could they have declined? 	could I have been declining?
could you have been declining?
could she have been declining?
could we have been declining?
could you have been declining?
could they have been declining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I decline?
couldn't you decline?
couldn't she decline?
couldn't we decline?
couldn't you decline?
couldn't they decline? 	couldn't I be declining?
couldn't you be declining?
couldn't she be declining?
couldn't we be declining?
couldn't you be declining?
couldn't they be declining? 	couldn't I have declined?
couldn't you have declined?
couldn't she have declined?
couldn't we have declined?
couldn't you have declined?
couldn't they have declined? 	couldn't I have been declining?
couldn't you have been declining?
couldn't she have been declining?
couldn't we have been declining?
couldn't you have been declining?
couldn't they have been declining?