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