I'd be observing you'd be observing he'd be observing we'd be observing you'd be observing they'd be observing
Perfect
I should've observed you should've observed he should've observed we should've observed you should've observed they should've observed
Perfect en V-ing
I should've been observing you should've been observing he should've been observing we should've been observing you should've been observing they should've been observing
Négation
Forme simple
I shouldn't observe you shouldn't observe he shouldn't observe we shouldn't observe you shouldn't observe they shouldn't observe
Forme en V-ing
I shouldn't be observing you shouldn't be observing he shouldn't be observing we shouldn't be observing you shouldn't be observing they shouldn't be observing
Perfect
I shouldn't have observed you shouldn't have observed he shouldn't have observed we shouldn't have observed you shouldn't have observed they shouldn't have observed
Perfect en V-ing
I shouldn't have been observing you shouldn't have been observing he shouldn't have been observing we shouldn't have been observing you shouldn't have been observing they shouldn't have been observing
Forme interrogative
Forme simple
should I observe? should you observe? should he observe? should we observe? should you observe? should they observe?
Forme en V-ing
should I be observing? should you be observing? should he be observing? should we be observing? should you be observing? should they be observing?
Perfect
should I have observed? should you have observed? should he have observed? should we have observed? should you have observed? should they have observed?
Perfect en V-ing
should I have been observing? should you have been observing? should he have been observing? should we have been observing? should you have been observing? should they have been observing?
Forme interro-négative
Forme simple
shouldn't I observe? shouldn't you observe? shouldn't he observe? shouldn't we observe? shouldn't you observe? shouldn't they observe?
Forme en V-ing
shouldn't I be observing? shouldn't you be observing? shouldn't he be observing? shouldn't we be observing? shouldn't you be observing? shouldn't they be observing?
Perfect
shouldn't I have observed? shouldn't you have observed? shouldn't he have observed? shouldn't we have observed? shouldn't you have observed? shouldn't they have observed?
Perfect en V-ing
shouldn't I have been observing? shouldn't you have been observing? shouldn't he have been observing? shouldn't we have been observing? shouldn't you have been observing? shouldn't they have been observing?