should intervene
Verbo regular: intervene - intervened- intervened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should intervene
you should intervene
he should intervene
we should intervene
you should intervene
they should intervene 	I should be intervening
you should be intervening
he should be intervening
we should be intervening
you should be intervening
they should be intervening	I should have intervened
you should have intervened
he should have intervened
we should have intervened
you should have intervened
they should have intervened	I should have been intervening
you should have been intervening
he should have been intervening
we should have been intervening
you should have been intervening
they should have been intervening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not intervene
you should not intervene
he should not intervene
we should not intervene
you should not intervene
they should not intervene 	I should not be intervening
you should not be intervening
he should not be intervening
we should not be intervening
you should not be intervening
they should not be intervening	I should not have intervened
you should not have intervened
he should not have intervened
we should not have intervened
you should not have intervened
they should not have intervened	I should not have been intervening
you should not have been intervening
he should not have been intervening
we should not have been intervening
you should not have been intervening
they should not have been intervening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I intervene?
should you intervene?
should he intervene?
should we intervene?
should you intervene?
should they intervene? 	should I be intervening?
should you be intervening?
should he be intervening?
should we be intervening?
should you be intervening?
should they be intervening? 	should I have intervened?
should you have intervened?
should he have intervened?
should we have intervened?
should you have intervened?
should they have intervened? 	should I have been intervening?
should you have been intervening?
should he have been intervening?
should we have been intervening?
should you have been intervening?
should they have been intervening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not intervene?
should you not intervene?
should he not intervene?
should we not intervene?
should you not intervene?
should they not intervene? 	should I not be intervening?
should you not be intervening?
should he not be intervening?
should we not be intervening?
should you not be intervening?
should they not be intervening? 	should I not have intervened?
should you not have intervened?
should he not have intervened?
should we not have intervened?
should you not have intervened?
should they not have intervened? 	should I not have been intervening?
should you not have been intervening?
should he not have been intervening?
should we not have been intervening?
should you not have been intervening?
should they not have been intervening?