I'd be learning you'd be learning he'd be learning we'd be learning you'd be learning they'd be learning
Perfect
I should've learned, learnt you should've learned, learnt he should've learned, learnt we should've learned, learnt you should've learned, learnt they should've learned, learnt
V-ing perfect
I should've been learning you should've been learning he should've been learning we should've been learning you should've been learning they should've been learning
Negation
Simple form
I shouldn't learn you shouldn't learn he shouldn't learn we shouldn't learn you shouldn't learn they shouldn't learn
V-ing form
I shouldn't be learning you shouldn't be learning he shouldn't be learning we shouldn't be learning you shouldn't be learning they shouldn't be learning
Perfect
I shouldn't have learned, learnt you shouldn't have learned, learnt he shouldn't have learned, learnt we shouldn't have learned, learnt you shouldn't have learned, learnt they shouldn't have learned, learnt
V-ing perfect
I shouldn't have been learning you shouldn't have been learning he shouldn't have been learning we shouldn't have been learning you shouldn't have been learning they shouldn't have been learning
Interrogative form
Simple form
should I learn? should you learn? should he learn? should we learn? should you learn? should they learn?
V-ing form
should I be learning? should you be learning? should he be learning? should we be learning? should you be learning? should they be learning?
Perfect
should I have learned, learnt? should you have learned, learnt? should he have learned, learnt? should we have learned, learnt? should you have learned, learnt? should they have learned, learnt?
V-ing perfect
should I have been learning? should you have been learning? should he have been learning? should we have been learning? should you have been learning? should they have been learning?
Interro-negative form
Simple form
shouldn't I learn? shouldn't you learn? shouldn't he learn? shouldn't we learn? shouldn't you learn? shouldn't they learn?
V-ing form
shouldn't I be learning? shouldn't you be learning? shouldn't he be learning? shouldn't we be learning? shouldn't you be learning? shouldn't they be learning?
Perfect
shouldn't I have learned, learnt? shouldn't you have learned, learnt? shouldn't he have learned, learnt? shouldn't we have learned, learnt? shouldn't you have learned, learnt? shouldn't they have learned, learnt?
V-ing perfect
shouldn't I have been learning? shouldn't you have been learning? shouldn't he have been learning? shouldn't we have been learning? shouldn't you have been learning? shouldn't they have been learning?