should scratch
Verbo regular: scratch - scratched- scratched

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd scratch
you'd scratch
he'd scratch
we'd scratch
you'd scratch
they'd scratch 	I'd be scratching
you'd be scratching
he'd be scratching
we'd be scratching
you'd be scratching
they'd be scratching	I should've scratched
you should've scratched
he should've scratched
we should've scratched
you should've scratched
they should've scratched	I should've been scratching
you should've been scratching
he should've been scratching
we should've been scratching
you should've been scratching
they should've been scratching	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't scratch
you shouldn't scratch
he shouldn't scratch
we shouldn't scratch
you shouldn't scratch
they shouldn't scratch 	I shouldn't be scratching
you shouldn't be scratching
he shouldn't be scratching
we shouldn't be scratching
you shouldn't be scratching
they shouldn't be scratching	I shouldn't have scratched
you shouldn't have scratched
he shouldn't have scratched
we shouldn't have scratched
you shouldn't have scratched
they shouldn't have scratched	I shouldn't have been scratching
you shouldn't have been scratching
he shouldn't have been scratching
we shouldn't have been scratching
you shouldn't have been scratching
they shouldn't have been scratching	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I scratch?
should you scratch?
should he scratch?
should we scratch?
should you scratch?
should they scratch? 	should I be scratching?
should you be scratching?
should he be scratching?
should we be scratching?
should you be scratching?
should they be scratching? 	should I have scratched?
should you have scratched?
should he have scratched?
should we have scratched?
should you have scratched?
should they have scratched? 	should I have been scratching?
should you have been scratching?
should he have been scratching?
should we have been scratching?
should you have been scratching?
should they have been scratching? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I scratch?
shouldn't you scratch?
shouldn't he scratch?
shouldn't we scratch?
shouldn't you scratch?
shouldn't they scratch? 	shouldn't I be scratching?
shouldn't you be scratching?
shouldn't he be scratching?
shouldn't we be scratching?
shouldn't you be scratching?
shouldn't they be scratching? 	shouldn't I have scratched?
shouldn't you have scratched?
shouldn't he have scratched?
shouldn't we have scratched?
shouldn't you have scratched?
shouldn't they have scratched? 	shouldn't I have been scratching?
shouldn't you have been scratching?
shouldn't he have been scratching?
shouldn't we have been scratching?
shouldn't you have been scratching?
shouldn't they have been scratching?