should caution
Verbo regular: caution - cautioned- cautioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd caution
you'd caution
she'd caution
we'd caution
you'd caution
they'd caution 	I'd be cautioning
you'd be cautioning
she'd be cautioning
we'd be cautioning
you'd be cautioning
they'd be cautioning	I should've cautioned
you should've cautioned
she should've cautioned
we should've cautioned
you should've cautioned
they should've cautioned	I should've been cautioning
you should've been cautioning
she should've been cautioning
we should've been cautioning
you should've been cautioning
they should've been cautioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't caution
you shouldn't caution
she shouldn't caution
we shouldn't caution
you shouldn't caution
they shouldn't caution 	I shouldn't be cautioning
you shouldn't be cautioning
she shouldn't be cautioning
we shouldn't be cautioning
you shouldn't be cautioning
they shouldn't be cautioning	I shouldn't have cautioned
you shouldn't have cautioned
she shouldn't have cautioned
we shouldn't have cautioned
you shouldn't have cautioned
they shouldn't have cautioned	I shouldn't have been cautioning
you shouldn't have been cautioning
she shouldn't have been cautioning
we shouldn't have been cautioning
you shouldn't have been cautioning
they shouldn't have been cautioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I caution?
should you caution?
should she caution?
should we caution?
should you caution?
should they caution? 	should I be cautioning?
should you be cautioning?
should she be cautioning?
should we be cautioning?
should you be cautioning?
should they be cautioning? 	should I have cautioned?
should you have cautioned?
should she have cautioned?
should we have cautioned?
should you have cautioned?
should they have cautioned? 	should I have been cautioning?
should you have been cautioning?
should she have been cautioning?
should we have been cautioning?
should you have been cautioning?
should they have been cautioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I caution?
shouldn't you caution?
shouldn't she caution?
shouldn't we caution?
shouldn't you caution?
shouldn't they caution? 	shouldn't I be cautioning?
shouldn't you be cautioning?
shouldn't she be cautioning?
shouldn't we be cautioning?
shouldn't you be cautioning?
shouldn't they be cautioning? 	shouldn't I have cautioned?
shouldn't you have cautioned?
shouldn't she have cautioned?
shouldn't we have cautioned?
shouldn't you have cautioned?
shouldn't they have cautioned? 	shouldn't I have been cautioning?
shouldn't you have been cautioning?
shouldn't she have been cautioning?
shouldn't we have been cautioning?
shouldn't you have been cautioning?
shouldn't they have been cautioning?