I should better you should better he should better we should better you should better they should better
V-ing form
I should be bettering you should be bettering he should be bettering we should be bettering you should be bettering they should be bettering
Perfect
I should have bettered you should have bettered he should have bettered we should have bettered you should have bettered they should have bettered
V-ing perfect
I should have been bettering you should have been bettering he should have been bettering we should have been bettering you should have been bettering they should have been bettering
Negation
Simple form
I should not better you should not better he should not better we should not better you should not better they should not better
V-ing form
I should not be bettering you should not be bettering he should not be bettering we should not be bettering you should not be bettering they should not be bettering
Perfect
I should not have bettered you should not have bettered he should not have bettered we should not have bettered you should not have bettered they should not have bettered
V-ing perfect
I should not have been bettering you should not have been bettering he should not have been bettering we should not have been bettering you should not have been bettering they should not have been bettering
Interrogative form
Simple form
should I better? should you better? should he better? should we better? should you better? should they better?
V-ing form
should I be bettering? should you be bettering? should he be bettering? should we be bettering? should you be bettering? should they be bettering?
Perfect
should I have bettered? should you have bettered? should he have bettered? should we have bettered? should you have bettered? should they have bettered?
V-ing perfect
should I have been bettering? should you have been bettering? should he have been bettering? should we have been bettering? should you have been bettering? should they have been bettering?
Interro-negative form
Simple form
should I not better? should you not better? should he not better? should we not better? should you not better? should they not better?
V-ing form
should I not be bettering? should you not be bettering? should he not be bettering? should we not be bettering? should you not be bettering? should they not be bettering?
Perfect
should I not have bettered? should you not have bettered? should he not have bettered? should we not have bettered? should you not have bettered? should they not have bettered?
V-ing perfect
should I not have been bettering? should you not have been bettering? should he not have been bettering? should we not have been bettering? should you not have been bettering? should they not have been bettering?