can foster
Verbo regular: foster - fostered- fostered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can foster
you can foster
he can foster
we can foster
you can foster
they can foster 	I can be fostering
you can be fostering
he can be fostering
we can be fostering
you can be fostering
they can be fostering	I can have fostered
you can have fostered
he can have fostered
we can have fostered
you can have fostered
they can have fostered	I can have been fostering
you can have been fostering
he can have been fostering
we can have been fostering
you can have been fostering
they can have been fostering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot foster
you cannot foster
he cannot foster
we cannot foster
you cannot foster
they cannot foster 	I cannot be fostering
you cannot be fostering
he cannot be fostering
we cannot be fostering
you cannot be fostering
they cannot be fostering	I cannot have fostered
you cannot have fostered
he cannot have fostered
we cannot have fostered
you cannot have fostered
they cannot have fostered	I cannot have been fostering
you cannot have been fostering
he cannot have been fostering
we cannot have been fostering
you cannot have been fostering
they cannot have been fostering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I foster?
can you foster?
can he foster?
can we foster?
can you foster?
can they foster? 	can I be fostering?
can you be fostering?
can he be fostering?
can we be fostering?
can you be fostering?
can they be fostering? 	can I have fostered?
can you have fostered?
can he have fostered?
can we have fostered?
can you have fostered?
can they have fostered? 	can I have been fostering?
can you have been fostering?
can he have been fostering?
can we have been fostering?
can you have been fostering?
can they have been fostering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not foster?
can you not foster?
can he not foster?
can we not foster?
can you not foster?
can they not foster? 	can I not be fostering?
can you not be fostering?
can he not be fostering?
can we not be fostering?
can you not be fostering?
can they not be fostering? 	can I not have fostered?
can you not have fostered?
can he not have fostered?
can we not have fostered?
can you not have fostered?
can they not have fostered? 	can I not have been fostering?
can you not have been fostering?
can he not have been fostering?
can we not have been fostering?
can you not have been fostering?
can they not have been fostering?