I'd be explaining you'd be explaining he'd be explaining we'd be explaining you'd be explaining they'd be explaining
Perfect
I should've explained you should've explained he should've explained we should've explained you should've explained they should've explained
V-ing perfect
I should've been explaining you should've been explaining he should've been explaining we should've been explaining you should've been explaining they should've been explaining
Negation
Simple form
I shouldn't explain you shouldn't explain he shouldn't explain we shouldn't explain you shouldn't explain they shouldn't explain
V-ing form
I shouldn't be explaining you shouldn't be explaining he shouldn't be explaining we shouldn't be explaining you shouldn't be explaining they shouldn't be explaining
Perfect
I shouldn't have explained you shouldn't have explained he shouldn't have explained we shouldn't have explained you shouldn't have explained they shouldn't have explained
V-ing perfect
I shouldn't have been explaining you shouldn't have been explaining he shouldn't have been explaining we shouldn't have been explaining you shouldn't have been explaining they shouldn't have been explaining
Interrogative form
Simple form
should I explain? should you explain? should he explain? should we explain? should you explain? should they explain?
V-ing form
should I be explaining? should you be explaining? should he be explaining? should we be explaining? should you be explaining? should they be explaining?
Perfect
should I have explained? should you have explained? should he have explained? should we have explained? should you have explained? should they have explained?
V-ing perfect
should I have been explaining? should you have been explaining? should he have been explaining? should we have been explaining? should you have been explaining? should they have been explaining?
Interro-negative form
Simple form
shouldn't I explain? shouldn't you explain? shouldn't he explain? shouldn't we explain? shouldn't you explain? shouldn't they explain?
V-ing form
shouldn't I be explaining? shouldn't you be explaining? shouldn't he be explaining? shouldn't we be explaining? shouldn't you be explaining? shouldn't they be explaining?
Perfect
shouldn't I have explained? shouldn't you have explained? shouldn't he have explained? shouldn't we have explained? shouldn't you have explained? shouldn't they have explained?
V-ing perfect
shouldn't I have been explaining? shouldn't you have been explaining? shouldn't he have been explaining? shouldn't we have been explaining? shouldn't you have been explaining? shouldn't they have been explaining?