should doubt
Verbo regular: doubt - doubted- doubted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd doubt
you'd doubt
he'd doubt
we'd doubt
you'd doubt
they'd doubt 	I'd be doubting
you'd be doubting
he'd be doubting
we'd be doubting
you'd be doubting
they'd be doubting	I should've doubted
you should've doubted
he should've doubted
we should've doubted
you should've doubted
they should've doubted	I should've been doubting
you should've been doubting
he should've been doubting
we should've been doubting
you should've been doubting
they should've been doubting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't doubt
you shouldn't doubt
he shouldn't doubt
we shouldn't doubt
you shouldn't doubt
they shouldn't doubt 	I shouldn't be doubting
you shouldn't be doubting
he shouldn't be doubting
we shouldn't be doubting
you shouldn't be doubting
they shouldn't be doubting	I shouldn't have doubted
you shouldn't have doubted
he shouldn't have doubted
we shouldn't have doubted
you shouldn't have doubted
they shouldn't have doubted	I shouldn't have been doubting
you shouldn't have been doubting
he shouldn't have been doubting
we shouldn't have been doubting
you shouldn't have been doubting
they shouldn't have been doubting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I doubt?
should you doubt?
should he doubt?
should we doubt?
should you doubt?
should they doubt? 	should I be doubting?
should you be doubting?
should he be doubting?
should we be doubting?
should you be doubting?
should they be doubting? 	should I have doubted?
should you have doubted?
should he have doubted?
should we have doubted?
should you have doubted?
should they have doubted? 	should I have been doubting?
should you have been doubting?
should he have been doubting?
should we have been doubting?
should you have been doubting?
should they have been doubting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I doubt?
shouldn't you doubt?
shouldn't he doubt?
shouldn't we doubt?
shouldn't you doubt?
shouldn't they doubt? 	shouldn't I be doubting?
shouldn't you be doubting?
shouldn't he be doubting?
shouldn't we be doubting?
shouldn't you be doubting?
shouldn't they be doubting? 	shouldn't I have doubted?
shouldn't you have doubted?
shouldn't he have doubted?
shouldn't we have doubted?
shouldn't you have doubted?
shouldn't they have doubted? 	shouldn't I have been doubting?
shouldn't you have been doubting?
shouldn't he have been doubting?
shouldn't we have been doubting?
shouldn't you have been doubting?
shouldn't they have been doubting?