should undertake
Verbo irregular: undertake - undertook- undertaken

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should undertake
you should undertake
she should undertake
we should undertake
you should undertake
they should undertake 	I should be undertaking
you should be undertaking
she should be undertaking
we should be undertaking
you should be undertaking
they should be undertaking	I should have undertaken
you should have undertaken
she should have undertaken
we should have undertaken
you should have undertaken
they should have undertaken	I should have been undertaking
you should have been undertaking
she should have been undertaking
we should have been undertaking
you should have been undertaking
they should have been undertaking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not undertake
you should not undertake
she should not undertake
we should not undertake
you should not undertake
they should not undertake 	I should not be undertaking
you should not be undertaking
she should not be undertaking
we should not be undertaking
you should not be undertaking
they should not be undertaking	I should not have undertaken
you should not have undertaken
she should not have undertaken
we should not have undertaken
you should not have undertaken
they should not have undertaken	I should not have been undertaking
you should not have been undertaking
she should not have been undertaking
we should not have been undertaking
you should not have been undertaking
they should not have been undertaking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I undertake?
should you undertake?
should she undertake?
should we undertake?
should you undertake?
should they undertake? 	should I be undertaking?
should you be undertaking?
should she be undertaking?
should we be undertaking?
should you be undertaking?
should they be undertaking? 	should I have undertaken?
should you have undertaken?
should she have undertaken?
should we have undertaken?
should you have undertaken?
should they have undertaken? 	should I have been undertaking?
should you have been undertaking?
should she have been undertaking?
should we have been undertaking?
should you have been undertaking?
should they have been undertaking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not undertake?
should you not undertake?
should she not undertake?
should we not undertake?
should you not undertake?
should they not undertake? 	should I not be undertaking?
should you not be undertaking?
should she not be undertaking?
should we not be undertaking?
should you not be undertaking?
should they not be undertaking? 	should I not have undertaken?
should you not have undertaken?
should she not have undertaken?
should we not have undertaken?
should you not have undertaken?
should they not have undertaken? 	should I not have been undertaking?
should you not have been undertaking?
should she not have been undertaking?
should we not have been undertaking?
should you not have been undertaking?
should they not have been undertaking?