could speculate
Verbe régulier : speculate - speculated- speculated
Traduction française : s'interroger - spéculer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could speculate
you could speculate
she could speculate
we could speculate
you could speculate
they could speculate 	I could be speculating
you could be speculating
she could be speculating
we could be speculating
you could be speculating
they could be speculating	I could have speculated
you could have speculated
she could have speculated
we could have speculated
you could have speculated
they could have speculated	I could have been speculating
you could have been speculating
she could have been speculating
we could have been speculating
you could have been speculating
they could have been speculating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't speculate
you couldn't speculate
she couldn't speculate
we couldn't speculate
you couldn't speculate
they couldn't speculate 	I couldn't be speculating
you couldn't be speculating
she couldn't be speculating
we couldn't be speculating
you couldn't be speculating
they couldn't be speculating	I couldn't have speculated
you couldn't have speculated
she couldn't have speculated
we couldn't have speculated
you couldn't have speculated
they couldn't have speculated	I couldn't have been speculating
you couldn't have been speculating
she couldn't have been speculating
we couldn't have been speculating
you couldn't have been speculating
they couldn't have been speculating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I speculate?
could you speculate?
could she speculate?
could we speculate?
could you speculate?
could they speculate? 	could I be speculating?
could you be speculating?
could she be speculating?
could we be speculating?
could you be speculating?
could they be speculating? 	could I have speculated?
could you have speculated?
could she have speculated?
could we have speculated?
could you have speculated?
could they have speculated? 	could I have been speculating?
could you have been speculating?
could she have been speculating?
could we have been speculating?
could you have been speculating?
could they have been speculating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I speculate?
couldn't you speculate?
couldn't she speculate?
couldn't we speculate?
couldn't you speculate?
couldn't they speculate? 	couldn't I be speculating?
couldn't you be speculating?
couldn't she be speculating?
couldn't we be speculating?
couldn't you be speculating?
couldn't they be speculating? 	couldn't I have speculated?
couldn't you have speculated?
couldn't she have speculated?
couldn't we have speculated?
couldn't you have speculated?
couldn't they have speculated? 	couldn't I have been speculating?
couldn't you have been speculating?
couldn't she have been speculating?
couldn't we have been speculating?
couldn't you have been speculating?
couldn't they have been speculating?