should howl
Verbo regular: howl - howled- howled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd howl
you'd howl
he'd howl
we'd howl
you'd howl
they'd howl 	I'd be howling
you'd be howling
he'd be howling
we'd be howling
you'd be howling
they'd be howling	I should've howled
you should've howled
he should've howled
we should've howled
you should've howled
they should've howled	I should've been howling
you should've been howling
he should've been howling
we should've been howling
you should've been howling
they should've been howling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't howl
you shouldn't howl
he shouldn't howl
we shouldn't howl
you shouldn't howl
they shouldn't howl 	I shouldn't be howling
you shouldn't be howling
he shouldn't be howling
we shouldn't be howling
you shouldn't be howling
they shouldn't be howling	I shouldn't have howled
you shouldn't have howled
he shouldn't have howled
we shouldn't have howled
you shouldn't have howled
they shouldn't have howled	I shouldn't have been howling
you shouldn't have been howling
he shouldn't have been howling
we shouldn't have been howling
you shouldn't have been howling
they shouldn't have been howling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I howl?
should you howl?
should he howl?
should we howl?
should you howl?
should they howl? 	should I be howling?
should you be howling?
should he be howling?
should we be howling?
should you be howling?
should they be howling? 	should I have howled?
should you have howled?
should he have howled?
should we have howled?
should you have howled?
should they have howled? 	should I have been howling?
should you have been howling?
should he have been howling?
should we have been howling?
should you have been howling?
should they have been howling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I howl?
shouldn't you howl?
shouldn't he howl?
shouldn't we howl?
shouldn't you howl?
shouldn't they howl? 	shouldn't I be howling?
shouldn't you be howling?
shouldn't he be howling?
shouldn't we be howling?
shouldn't you be howling?
shouldn't they be howling? 	shouldn't I have howled?
shouldn't you have howled?
shouldn't he have howled?
shouldn't we have howled?
shouldn't you have howled?
shouldn't they have howled? 	shouldn't I have been howling?
shouldn't you have been howling?
shouldn't he have been howling?
shouldn't we have been howling?
shouldn't you have been howling?
shouldn't they have been howling?