Conjugación del verbo inglés
COULD NOD

Verbo regular: nod - nodded - nodded

Afirmación

Forma simple	Forma con V-ing
I could nod you could nod she could nod we could nod you could nod they could nod	I could be nodding you could be nodding she could be nodding we could be nodding you could be nodding they could be nodding
Perfecto	Perfecto con V-ing
I could have nodded you could have nodded she could have nodded we could have nodded you could have nodded they could have nodded	I could have been nodding you could have been nodding she could have been nodding we could have been nodding you could have been nodding they could have been nodding

Negación

Forma simple	Forma con V-ing
I couldn't nod you couldn't nod she couldn't nod we couldn't nod you couldn't nod they couldn't nod	I couldn't be nodding you couldn't be nodding she couldn't be nodding we couldn't be nodding you couldn't be nodding they couldn't be nodding
Perfecto	Perfecto con V-ing
I couldn't have nodded you couldn't have nodded she couldn't have nodded we couldn't have nodded you couldn't have nodded they couldn't have nodded	I couldn't have been nodding you couldn't have been nodding she couldn't have been nodding we couldn't have been nodding you couldn't have been nodding they couldn't have been nodding

Forma interrogativa

Forma simple	Forma con V-ing
could I nod? could you nod? could she nod? could we nod? could you nod? could they nod?	could I be nodding? could you be nodding? could she be nodding? could we be nodding? could you be nodding? could they be nodding?
Perfecto	Perfecto con V-ing
could I have nodded? could you have nodded? could she have nodded? could we have nodded? could you have nodded? could they have nodded?	could I have been nodding? could you have been nodding? could she have been nodding? could we have been nodding? could you have been nodding? could they have been nodding?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I nod? couldn't you nod? couldn't she nod? couldn't we nod? couldn't you nod? couldn't they nod?	couldn't I be nodding? couldn't you be nodding? couldn't she be nodding? couldn't we be nodding? couldn't you be nodding? couldn't they be nodding?
Perfecto	Perfecto con V-ing
couldn't I have nodded? couldn't you have nodded? couldn't she have nodded? couldn't we have nodded? couldn't you have nodded? couldn't they have nodded?	couldn't I have been nodding? couldn't you have been nodding? couldn't she have been nodding? couldn't we have been nodding? couldn't you have been nodding? couldn't they have been nodding?