can undertake
Verbo irregular: undertake - undertook- undertaken

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

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

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

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