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

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

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

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

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