I should marvel you should marvel he should marvel we should marvel you should marvel they should marvel
V-ing form
I should be marvelling you should be marvelling he should be marvelling we should be marvelling you should be marvelling they should be marvelling
Perfect
I should have marvelled you should have marvelled he should have marvelled we should have marvelled you should have marvelled they should have marvelled
V-ing perfect
I should have been marvelling you should have been marvelling he should have been marvelling we should have been marvelling you should have been marvelling they should have been marvelling
Negation
Simple form
I should not marvel you should not marvel he should not marvel we should not marvel you should not marvel they should not marvel
V-ing form
I should not be marvelling you should not be marvelling he should not be marvelling we should not be marvelling you should not be marvelling they should not be marvelling
Perfect
I should not have marvelled you should not have marvelled he should not have marvelled we should not have marvelled you should not have marvelled they should not have marvelled
V-ing perfect
I should not have been marvelling you should not have been marvelling he should not have been marvelling we should not have been marvelling you should not have been marvelling they should not have been marvelling
Interrogative form
Simple form
should I marvel? should you marvel? should he marvel? should we marvel? should you marvel? should they marvel?
V-ing form
should I be marvelling? should you be marvelling? should he be marvelling? should we be marvelling? should you be marvelling? should they be marvelling?
Perfect
should I have marvelled? should you have marvelled? should he have marvelled? should we have marvelled? should you have marvelled? should they have marvelled?
V-ing perfect
should I have been marvelling? should you have been marvelling? should he have been marvelling? should we have been marvelling? should you have been marvelling? should they have been marvelling?
Interro-negative form
Simple form
should I not marvel? should you not marvel? should he not marvel? should we not marvel? should you not marvel? should they not marvel?
V-ing form
should I not be marvelling? should you not be marvelling? should he not be marvelling? should we not be marvelling? should you not be marvelling? should they not be marvelling?
Perfect
should I not have marvelled? should you not have marvelled? should he not have marvelled? should we not have marvelled? should you not have marvelled? should they not have marvelled?
V-ing perfect
should I not have been marvelling? should you not have been marvelling? should he not have been marvelling? should we not have been marvelling? should you not have been marvelling? should they not have been marvelling?