should understand
Verbe irrégulier : understand - understood- understood
Traduction française : comprendre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should understand
you should understand
he should understand
we should understand
you should understand
they should understand 	I should be understanding
you should be understanding
he should be understanding
we should be understanding
you should be understanding
they should be understanding	I should have understood
you should have understood
he should have understood
we should have understood
you should have understood
they should have understood	I should have been understanding
you should have been understanding
he should have been understanding
we should have been understanding
you should have been understanding
they should have been understanding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not understand
you should not understand
he should not understand
we should not understand
you should not understand
they should not understand 	I should not be understanding
you should not be understanding
he should not be understanding
we should not be understanding
you should not be understanding
they should not be understanding	I should not have understood
you should not have understood
he should not have understood
we should not have understood
you should not have understood
they should not have understood	I should not have been understanding
you should not have been understanding
he should not have been understanding
we should not have been understanding
you should not have been understanding
they should not have been understanding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I understand?
should you understand?
should he understand?
should we understand?
should you understand?
should they understand? 	should I be understanding?
should you be understanding?
should he be understanding?
should we be understanding?
should you be understanding?
should they be understanding? 	should I have understood?
should you have understood?
should he have understood?
should we have understood?
should you have understood?
should they have understood? 	should I have been understanding?
should you have been understanding?
should he have been understanding?
should we have been understanding?
should you have been understanding?
should they have been understanding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I not understand?
should you not understand?
should he not understand?
should we not understand?
should you not understand?
should they not understand? 	should I not be understanding?
should you not be understanding?
should he not be understanding?
should we not be understanding?
should you not be understanding?
should they not be understanding? 	should I not have understood?
should you not have understood?
should he not have understood?
should we not have understood?
should you not have understood?
should they not have understood? 	should I not have been understanding?
should you not have been understanding?
should he not have been understanding?
should we not have been understanding?
should you not have been understanding?
should they not have been understanding?