English verb conjugation
SHOULD LISTEN

Regular verb: listen - listened - listened

Affirmation

Simple form	V-ing form
I'd listen you'd listen she'd listen we'd listen you'd listen they'd listen	I'd be listening you'd be listening she'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 she 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 she 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 she 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 she 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 she 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 she 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 she listen? should we listen? should you listen? should they listen?	should I be listening? should you be listening? should she 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 she 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 she 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 she 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 she 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 she 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 she have been listening? shouldn't we have been listening? shouldn't you have been listening? shouldn't they have been listening?