can impair
Verbe régulier : impair - impaired- impaired
Traduction française : diminuer - détériorer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can impair
you can impair
he can impair
we can impair
you can impair
they can impair 	I can be impairing
you can be impairing
he can be impairing
we can be impairing
you can be impairing
they can be impairing	I can have impaired
you can have impaired
he can have impaired
we can have impaired
you can have impaired
they can have impaired	I can have been impairing
you can have been impairing
he can have been impairing
we can have been impairing
you can have been impairing
they can have been impairing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot impair
you cannot impair
he cannot impair
we cannot impair
you cannot impair
they cannot impair 	I cannot be impairing
you cannot be impairing
he cannot be impairing
we cannot be impairing
you cannot be impairing
they cannot be impairing	I cannot have impaired
you cannot have impaired
he cannot have impaired
we cannot have impaired
you cannot have impaired
they cannot have impaired	I cannot have been impairing
you cannot have been impairing
he cannot have been impairing
we cannot have been impairing
you cannot have been impairing
they cannot have been impairing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I impair?
can you impair?
can he impair?
can we impair?
can you impair?
can they impair? 	can I be impairing?
can you be impairing?
can he be impairing?
can we be impairing?
can you be impairing?
can they be impairing? 	can I have impaired?
can you have impaired?
can he have impaired?
can we have impaired?
can you have impaired?
can they have impaired? 	can I have been impairing?
can you have been impairing?
can he have been impairing?
can we have been impairing?
can you have been impairing?
can they have been impairing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not impair?
can you not impair?
can he not impair?
can we not impair?
can you not impair?
can they not impair? 	can I not be impairing?
can you not be impairing?
can he not be impairing?
can we not be impairing?
can you not be impairing?
can they not be impairing? 	can I not have impaired?
can you not have impaired?
can he not have impaired?
can we not have impaired?
can you not have impaired?
can they not have impaired? 	can I not have been impairing?
can you not have been impairing?
can he not have been impairing?
can we not have been impairing?
can you not have been impairing?
can they not have been impairing?