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 can't undertake
you can't undertake
she can't undertake
we can't undertake
you can't undertake
they can't undertake 	I can't be undertaking
you can't be undertaking
she can't be undertaking
we can't be undertaking
you can't be undertaking
they can't be undertaking	I can't have undertaken
you can't have undertaken
she can't have undertaken
we can't have undertaken
you can't have undertaken
they can't have undertaken	I can't have been undertaking
you can't have been undertaking
she can't have been undertaking
we can't have been undertaking
you can't have been undertaking
they can't 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't I undertake?
can't you undertake?
can't she undertake?
can't we undertake?
can't you undertake?
can't they undertake? 	can't I be undertaking?
can't you be undertaking?
can't she be undertaking?
can't we be undertaking?
can't you be undertaking?
can't they be undertaking? 	can't I have undertaken?
can't you have undertaken?
can't she have undertaken?
can't we have undertaken?
can't you have undertaken?
can't they have undertaken? 	can't I have been undertaking?
can't you have been undertaking?
can't she have been undertaking?
can't we have been undertaking?
can't you have been undertaking?
can't they have been undertaking?