I should explain you should explain he should explain we should explain you should explain they should explain
V-ing form
I should be explaining you should be explaining he should be explaining we should be explaining you should be explaining they should be explaining
Perfect
I should have explained you should have explained he should have explained we should have explained you should have explained they should have explained
V-ing perfect
I should have been explaining you should have been explaining he should have been explaining we should have been explaining you should have been explaining they should have been explaining
Negation
Simple form
I should not explain you should not explain he should not explain we should not explain you should not explain they should not explain
V-ing form
I should not be explaining you should not be explaining he should not be explaining we should not be explaining you should not be explaining they should not be explaining
Perfect
I should not have explained you should not have explained he should not have explained we should not have explained you should not have explained they should not have explained
V-ing perfect
I should not have been explaining you should not have been explaining he should not have been explaining we should not have been explaining you should not have been explaining they should not 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
should I not explain? should you not explain? should he not explain? should we not explain? should you not explain? should they not explain?
V-ing form
should I not be explaining? should you not be explaining? should he not be explaining? should we not be explaining? should you not be explaining? should they not be explaining?
Perfect
should I not have explained? should you not have explained? should he not have explained? should we not have explained? should you not have explained? should they not have explained?
V-ing perfect
should I not have been explaining? should you not have been explaining? should he not have been explaining? should we not have been explaining? should you not have been explaining? should they not have been explaining?