I would understand you would understand he would understand we would understand you would understand they would understand
V-ing form
I would be understanding you would be understanding he would be understanding we would be understanding you would be understanding they would be understanding
Perfect
I would have understood you would have understood he would have understood we would have understood you would have understood they would have understood
V-ing perfect
I would have been understanding you would have been understanding he would have been understanding we would have been understanding you would have been understanding they would have been understanding
Negation
Simple form
I would not understand you would not understand he would not understand we would not understand you would not understand they would not understand
V-ing form
I would not be understanding you would not be understanding he would not be understanding we would not be understanding you would not be understanding they would not be understanding
Perfect
I would not have understood you would not have understood he would not have understood we would not have understood you would not have understood they would not have understood
V-ing perfect
I would not have been understanding you would not have been understanding he would not have been understanding we would not have been understanding you would not have been understanding they would not have been understanding
Interrogative form
Simple form
would I understand? would you understand? would he understand? would we understand? would you understand? would they understand?
V-ing form
would I be understanding? would you be understanding? would he be understanding? would we be understanding? would you be understanding? would they be understanding?
Perfect
would I have understood? would you have understood? would he have understood? would we have understood? would you have understood? would they have understood?
V-ing perfect
would I have been understanding? would you have been understanding? would he have been understanding? would we have been understanding? would you have been understanding? would they have been understanding?
Interro-negative form
Simple form
would I not understand? would you not understand? would he not understand? would we not understand? would you not understand? would they not understand?
V-ing form
would I not be understanding? would you not be understanding? would he not be understanding? would we not be understanding? would you not be understanding? would they not be understanding?
Perfect
would I not have understood? would you not have understood? would he not have understood? would we not have understood? would you not have understood? would they not have understood?
V-ing perfect
would I not have been understanding? would you not have been understanding? would he not have been understanding? would we not have been understanding? would you not have been understanding? would they not have been understanding?