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

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

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

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

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