could sleep
Verbe irrégulier : sleep - slept- slept
Traduction française : dormir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sleep
you could sleep
he could sleep
we could sleep
you could sleep
they could sleep 	I could be sleeping
you could be sleeping
he could be sleeping
we could be sleeping
you could be sleeping
they could be sleeping	I could have slept
you could have slept
he could have slept
we could have slept
you could have slept
they could have slept	I could have been sleeping
you could have been sleeping
he could have been sleeping
we could have been sleeping
you could have been sleeping
they could have been sleeping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sleep
you couldn't sleep
he couldn't sleep
we couldn't sleep
you couldn't sleep
they couldn't sleep 	I couldn't be sleeping
you couldn't be sleeping
he couldn't be sleeping
we couldn't be sleeping
you couldn't be sleeping
they couldn't be sleeping	I couldn't have slept
you couldn't have slept
he couldn't have slept
we couldn't have slept
you couldn't have slept
they couldn't have slept	I couldn't have been sleeping
you couldn't have been sleeping
he couldn't have been sleeping
we couldn't have been sleeping
you couldn't have been sleeping
they couldn't have been sleeping	

Forme interrogative 	
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could I sleep?
could you sleep?
could he sleep?
could we sleep?
could you sleep?
could they sleep? 	could I be sleeping?
could you be sleeping?
could he be sleeping?
could we be sleeping?
could you be sleeping?
could they be sleeping? 	could I have slept?
could you have slept?
could he have slept?
could we have slept?
could you have slept?
could they have slept? 	could I have been sleeping?
could you have been sleeping?
could he have been sleeping?
could we have been sleeping?
could you have been sleeping?
could they have been sleeping? 	

Forme interro-négative 	
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couldn't I sleep?
couldn't you sleep?
couldn't he sleep?
couldn't we sleep?
couldn't you sleep?
couldn't they sleep? 	couldn't I be sleeping?
couldn't you be sleeping?
couldn't he be sleeping?
couldn't we be sleeping?
couldn't you be sleeping?
couldn't they be sleeping? 	couldn't I have slept?
couldn't you have slept?
couldn't he have slept?
couldn't we have slept?
couldn't you have slept?
couldn't they have slept? 	couldn't I have been sleeping?
couldn't you have been sleeping?
couldn't he have been sleeping?
couldn't we have been sleeping?
couldn't you have been sleeping?
couldn't they have been sleeping?