I'd be nodding you'd be nodding she'd be nodding we'd be nodding you'd be nodding they'd be nodding
Perfect
I should've nodded you should've nodded she should've nodded we should've nodded you should've nodded they should've nodded
V-ing perfect
I should've been nodding you should've been nodding she should've been nodding we should've been nodding you should've been nodding they should've been nodding
Negation
Simple form
I shouldn't nod you shouldn't nod she shouldn't nod we shouldn't nod you shouldn't nod they shouldn't nod
V-ing form
I shouldn't be nodding you shouldn't be nodding she shouldn't be nodding we shouldn't be nodding you shouldn't be nodding they shouldn't be nodding
Perfect
I shouldn't have nodded you shouldn't have nodded she shouldn't have nodded we shouldn't have nodded you shouldn't have nodded they shouldn't have nodded
V-ing perfect
I shouldn't have been nodding you shouldn't have been nodding she shouldn't have been nodding we shouldn't have been nodding you shouldn't have been nodding they shouldn't have been nodding
Interrogative form
Simple form
should I nod? should you nod? should she nod? should we nod? should you nod? should they nod?
V-ing form
should I be nodding? should you be nodding? should she be nodding? should we be nodding? should you be nodding? should they be nodding?
Perfect
should I have nodded? should you have nodded? should she have nodded? should we have nodded? should you have nodded? should they have nodded?
V-ing perfect
should I have been nodding? should you have been nodding? should she have been nodding? should we have been nodding? should you have been nodding? should they have been nodding?
Interro-negative form
Simple form
shouldn't I nod? shouldn't you nod? shouldn't she nod? shouldn't we nod? shouldn't you nod? shouldn't they nod?
V-ing form
shouldn't I be nodding? shouldn't you be nodding? shouldn't she be nodding? shouldn't we be nodding? shouldn't you be nodding? shouldn't they be nodding?
Perfect
shouldn't I have nodded? shouldn't you have nodded? shouldn't she have nodded? shouldn't we have nodded? shouldn't you have nodded? shouldn't they have nodded?
V-ing perfect
shouldn't I have been nodding? shouldn't you have been nodding? shouldn't she have been nodding? shouldn't we have been nodding? shouldn't you have been nodding? shouldn't they have been nodding?