I should prepare you should prepare he should prepare we should prepare you should prepare they should prepare
V-ing form
I should be preparing you should be preparing he should be preparing we should be preparing you should be preparing they should be preparing
Perfect
I should have prepared you should have prepared he should have prepared we should have prepared you should have prepared they should have prepared
V-ing perfect
I should have been preparing you should have been preparing he should have been preparing we should have been preparing you should have been preparing they should have been preparing
Negation
Simple form
I should not prepare you should not prepare he should not prepare we should not prepare you should not prepare they should not prepare
V-ing form
I should not be preparing you should not be preparing he should not be preparing we should not be preparing you should not be preparing they should not be preparing
Perfect
I should not have prepared you should not have prepared he should not have prepared we should not have prepared you should not have prepared they should not have prepared
V-ing perfect
I should not have been preparing you should not have been preparing he should not have been preparing we should not have been preparing you should not have been preparing they should not have been preparing
Interrogative form
Simple form
should I prepare? should you prepare? should he prepare? should we prepare? should you prepare? should they prepare?
V-ing form
should I be preparing? should you be preparing? should he be preparing? should we be preparing? should you be preparing? should they be preparing?
Perfect
should I have prepared? should you have prepared? should he have prepared? should we have prepared? should you have prepared? should they have prepared?
V-ing perfect
should I have been preparing? should you have been preparing? should he have been preparing? should we have been preparing? should you have been preparing? should they have been preparing?
Interro-negative form
Simple form
should I not prepare? should you not prepare? should he not prepare? should we not prepare? should you not prepare? should they not prepare?
V-ing form
should I not be preparing? should you not be preparing? should he not be preparing? should we not be preparing? should you not be preparing? should they not be preparing?
Perfect
should I not have prepared? should you not have prepared? should he not have prepared? should we not have prepared? should you not have prepared? should they not have prepared?
V-ing perfect
should I not have been preparing? should you not have been preparing? should he not have been preparing? should we not have been preparing? should you not have been preparing? should they not have been preparing?