I'd be observing you'd be observing he'd be observing we'd be observing you'd be observing they'd be observing
Perfecto
I should've observed you should've observed he should've observed we should've observed you should've observed they should've observed
Perfecto con 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
Negación
Forma 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
Forma con 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
Perfecto
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
Perfecto con 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
Forma interrogativa
Forma simple
should I observe? should you observe? should he observe? should we observe? should you observe? should they observe?
Forma con 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?
Perfecto
should I have observed? should you have observed? should he have observed? should we have observed? should you have observed? should they have observed?
Perfecto con 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?
Forma interro-negativa
Forma 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?
Forma con 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?
Perfecto
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?
Perfecto con 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?