should doubt
Verbo regular: doubt - doubted- doubted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should doubt
you should doubt
he should doubt
we should doubt
you should doubt
they should doubt 	I should be doubting
you should be doubting
he should be doubting
we should be doubting
you should be doubting
they should be doubting	I should have doubted
you should have doubted
he should have doubted
we should have doubted
you should have doubted
they should have doubted	I should have been doubting
you should have been doubting
he should have been doubting
we should have been doubting
you should have been doubting
they should have been doubting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not doubt
you should not doubt
he should not doubt
we should not doubt
you should not doubt
they should not doubt 	I should not be doubting
you should not be doubting
he should not be doubting
we should not be doubting
you should not be doubting
they should not be doubting	I should not have doubted
you should not have doubted
he should not have doubted
we should not have doubted
you should not have doubted
they should not have doubted	I should not have been doubting
you should not have been doubting
he should not have been doubting
we should not have been doubting
you should not have been doubting
they should not have been doubting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not doubt?
should you not doubt?
should he not doubt?
should we not doubt?
should you not doubt?
should they not doubt? 	should I not be doubting?
should you not be doubting?
should he not be doubting?
should we not be doubting?
should you not be doubting?
should they not be doubting? 	should I not have doubted?
should you not have doubted?
should he not have doubted?
should we not have doubted?
should you not have doubted?
should they not have doubted? 	should I not have been doubting?
should you not have been doubting?
should he not have been doubting?
should we not have been doubting?
should you not have been doubting?
should they not have been doubting?