I should comment you should comment he should comment we should comment you should comment they should comment
V-ing form
I should be commenting you should be commenting he should be commenting we should be commenting you should be commenting they should be commenting
Perfect
I should have commented you should have commented he should have commented we should have commented you should have commented they should have commented
V-ing perfect
I should have been commenting you should have been commenting he should have been commenting we should have been commenting you should have been commenting they should have been commenting
Negation
Simple form
I should not comment you should not comment he should not comment we should not comment you should not comment they should not comment
V-ing form
I should not be commenting you should not be commenting he should not be commenting we should not be commenting you should not be commenting they should not be commenting
Perfect
I should not have commented you should not have commented he should not have commented we should not have commented you should not have commented they should not have commented
V-ing perfect
I should not have been commenting you should not have been commenting he should not have been commenting we should not have been commenting you should not have been commenting they should not have been commenting
Interrogative form
Simple form
should I comment? should you comment? should he comment? should we comment? should you comment? should they comment?
V-ing form
should I be commenting? should you be commenting? should he be commenting? should we be commenting? should you be commenting? should they be commenting?
Perfect
should I have commented? should you have commented? should he have commented? should we have commented? should you have commented? should they have commented?
V-ing perfect
should I have been commenting? should you have been commenting? should he have been commenting? should we have been commenting? should you have been commenting? should they have been commenting?
Interro-negative form
Simple form
should I not comment? should you not comment? should he not comment? should we not comment? should you not comment? should they not comment?
V-ing form
should I not be commenting? should you not be commenting? should he not be commenting? should we not be commenting? should you not be commenting? should they not be commenting?
Perfect
should I not have commented? should you not have commented? should he not have commented? should we not have commented? should you not have commented? should they not have commented?
V-ing perfect
should I not have been commenting? should you not have been commenting? should he not have been commenting? should we not have been commenting? should you not have been commenting? should they not have been commenting?