English verb conjugation
SHOULD LISTEN

Regular verb: listen - listened - listened

Affirmation

Simple form	V-ing form
I should listen you should listen he should listen we should listen you should listen they should listen	I should be listening you should be listening he should be listening we should be listening you should be listening they should be listening
Perfect	V-ing perfect
I should have listened you should have listened he should have listened we should have listened you should have listened they should have listened	I should have been listening you should have been listening he should have been listening we should have been listening you should have been listening they should have been listening

Negation

Simple form	V-ing form
I should not listen you should not listen he should not listen we should not listen you should not listen they should not listen	I should not be listening you should not be listening he should not be listening we should not be listening you should not be listening they should not be listening
Perfect	V-ing perfect
I should not have listened you should not have listened he should not have listened we should not have listened you should not have listened they should not have listened	I should not have been listening you should not have been listening he should not have been listening we should not have been listening you should not have been listening they should not have been listening

Interrogative form

Simple form	V-ing form
should I listen? should you listen? should he listen? should we listen? should you listen? should they listen?	should I be listening? should you be listening? should he be listening? should we be listening? should you be listening? should they be listening?
Perfect	V-ing perfect
should I have listened? should you have listened? should he have listened? should we have listened? should you have listened? should they have listened?	should I have been listening? should you have been listening? should he have been listening? should we have been listening? should you have been listening? should they have been listening?

Interro-negative form

Simple form	V-ing form
should I not listen? should you not listen? should he not listen? should we not listen? should you not listen? should they not listen?	should I not be listening? should you not be listening? should he not be listening? should we not be listening? should you not be listening? should they not be listening?
Perfect	V-ing perfect
should I not have listened? should you not have listened? should he not have listened? should we not have listened? should you not have listened? should they not have listened?	should I not have been listening? should you not have been listening? should he not have been listening? should we not have been listening? should you not have been listening? should they not have been listening?