I'd be investigating you'd be investigating she'd be investigating we'd be investigating you'd be investigating they'd be investigating
Perfecto
I should've investigated you should've investigated she should've investigated we should've investigated you should've investigated they should've investigated
Perfecto con V-ing
I should've been investigating you should've been investigating she should've been investigating we should've been investigating you should've been investigating they should've been investigating
Negación
Forma simple
I shouldn't investigate you shouldn't investigate she shouldn't investigate we shouldn't investigate you shouldn't investigate they shouldn't investigate
Forma con V-ing
I shouldn't be investigating you shouldn't be investigating she shouldn't be investigating we shouldn't be investigating you shouldn't be investigating they shouldn't be investigating
Perfecto
I shouldn't have investigated you shouldn't have investigated she shouldn't have investigated we shouldn't have investigated you shouldn't have investigated they shouldn't have investigated
Perfecto con V-ing
I shouldn't have been investigating you shouldn't have been investigating she shouldn't have been investigating we shouldn't have been investigating you shouldn't have been investigating they shouldn't have been investigating
Forma interrogativa
Forma simple
should I investigate? should you investigate? should she investigate? should we investigate? should you investigate? should they investigate?
Forma con V-ing
should I be investigating? should you be investigating? should she be investigating? should we be investigating? should you be investigating? should they be investigating?
Perfecto
should I have investigated? should you have investigated? should she have investigated? should we have investigated? should you have investigated? should they have investigated?
Perfecto con V-ing
should I have been investigating? should you have been investigating? should she have been investigating? should we have been investigating? should you have been investigating? should they have been investigating?
Forma interro-negativa
Forma simple
shouldn't I investigate? shouldn't you investigate? shouldn't she investigate? shouldn't we investigate? shouldn't you investigate? shouldn't they investigate?
Forma con V-ing
shouldn't I be investigating? shouldn't you be investigating? shouldn't she be investigating? shouldn't we be investigating? shouldn't you be investigating? shouldn't they be investigating?
Perfecto
shouldn't I have investigated? shouldn't you have investigated? shouldn't she have investigated? shouldn't we have investigated? shouldn't you have investigated? shouldn't they have investigated?
Perfecto con V-ing
shouldn't I have been investigating? shouldn't you have been investigating? shouldn't she have been investigating? shouldn't we have been investigating? shouldn't you have been investigating? shouldn't they have been investigating?