English verb conjugation
SHOULD LISTEN

Regular verb: listen - listened - listened

Affirmation

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

Negation

Simple form	V-ing form
I shouldn't listen you shouldn't listen he shouldn't listen we shouldn't listen you shouldn't listen they shouldn't listen	I shouldn't be listening you shouldn't be listening he shouldn't be listening we shouldn't be listening you shouldn't be listening they shouldn't be listening
Perfect	V-ing perfect
I shouldn't have listened you shouldn't have listened he shouldn't have listened we shouldn't have listened you shouldn't have listened they shouldn't have listened	I shouldn't have been listening you shouldn't have been listening he shouldn't have been listening we shouldn't have been listening you shouldn't have been listening they shouldn't 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
shouldn't I listen? shouldn't you listen? shouldn't he listen? shouldn't we listen? shouldn't you listen? shouldn't they listen?	shouldn't I be listening? shouldn't you be listening? shouldn't he be listening? shouldn't we be listening? shouldn't you be listening? shouldn't they be listening?
Perfect	V-ing perfect
shouldn't I have listened? shouldn't you have listened? shouldn't he have listened? shouldn't we have listened? shouldn't you have listened? shouldn't they have listened?	shouldn't I have been listening? shouldn't you have been listening? shouldn't he have been listening? shouldn't we have been listening? shouldn't you have been listening? shouldn't they have been listening?