Conjugação do verbo inglês
COULD THROB

Verbo regular: throb - throbbed - throbbed

Afirmação

Forma simple	Forma com V-ing
I could throb you could throb he could throb we could throb you could throb they could throb	I could be throbbing you could be throbbing he could be throbbing we could be throbbing you could be throbbing they could be throbbing
Perfeito	Perfeito com V-ing
I could have throbbed you could have throbbed he could have throbbed we could have throbbed you could have throbbed they could have throbbed	I could have been throbbing you could have been throbbing he could have been throbbing we could have been throbbing you could have been throbbing they could have been throbbing

Negação

Forma simple	Forma com V-ing
I could not throb you could not throb he could not throb we could not throb you could not throb they could not throb	I could not be throbbing you could not be throbbing he could not be throbbing we could not be throbbing you could not be throbbing they could not be throbbing
Perfeito	Perfeito com V-ing
I could not have throbbed you could not have throbbed he could not have throbbed we could not have throbbed you could not have throbbed they could not have throbbed	I could not have been throbbing you could not have been throbbing he could not have been throbbing we could not have been throbbing you could not have been throbbing they could not have been throbbing

Forma interrogativa

Forma simple	Forma com V-ing
could I throb? could you throb? could he throb? could we throb? could you throb? could they throb?	could I be throbbing? could you be throbbing? could he be throbbing? could we be throbbing? could you be throbbing? could they be throbbing?
Perfeito	Perfeito com V-ing
could I have throbbed? could you have throbbed? could he have throbbed? could we have throbbed? could you have throbbed? could they have throbbed?	could I have been throbbing? could you have been throbbing? could he have been throbbing? could we have been throbbing? could you have been throbbing? could they have been throbbing?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not throb? could you not throb? could he not throb? could we not throb? could you not throb? could they not throb?	could I not be throbbing? could you not be throbbing? could he not be throbbing? could we not be throbbing? could you not be throbbing? could they not be throbbing?
Perfeito	Perfeito com V-ing
could I not have throbbed? could you not have throbbed? could he not have throbbed? could we not have throbbed? could you not have throbbed? could they not have throbbed?	could I not have been throbbing? could you not have been throbbing? could he not have been throbbing? could we not have been throbbing? could you not have been throbbing? could they not have been throbbing?