I should fight you should fight he should fight we should fight you should fight they should fight
V-ing form
I should be fighting you should be fighting he should be fighting we should be fighting you should be fighting they should be fighting
Perfect
I should have fought you should have fought he should have fought we should have fought you should have fought they should have fought
V-ing perfect
I should have been fighting you should have been fighting he should have been fighting we should have been fighting you should have been fighting they should have been fighting
Negation
Simple form
I should not fight you should not fight he should not fight we should not fight you should not fight they should not fight
V-ing form
I should not be fighting you should not be fighting he should not be fighting we should not be fighting you should not be fighting they should not be fighting
Perfect
I should not have fought you should not have fought he should not have fought we should not have fought you should not have fought they should not have fought
V-ing perfect
I should not have been fighting you should not have been fighting he should not have been fighting we should not have been fighting you should not have been fighting they should not have been fighting
Interrogative form
Simple form
should I fight? should you fight? should he fight? should we fight? should you fight? should they fight?
V-ing form
should I be fighting? should you be fighting? should he be fighting? should we be fighting? should you be fighting? should they be fighting?
Perfect
should I have fought? should you have fought? should he have fought? should we have fought? should you have fought? should they have fought?
V-ing perfect
should I have been fighting? should you have been fighting? should he have been fighting? should we have been fighting? should you have been fighting? should they have been fighting?
Interro-negative form
Simple form
should I not fight? should you not fight? should he not fight? should we not fight? should you not fight? should they not fight?
V-ing form
should I not be fighting? should you not be fighting? should he not be fighting? should we not be fighting? should you not be fighting? should they not be fighting?
Perfect
should I not have fought? should you not have fought? should he not have fought? should we not have fought? should you not have fought? should they not have fought?
V-ing perfect
should I not have been fighting? should you not have been fighting? should he not have been fighting? should we not have been fighting? should you not have been fighting? should they not have been fighting?