Conjugación del verbo inglés
COULD PURIFY

Verbo regular: purify - purified - purified

Afirmación

Forma simple	Forma con V-ing
I could purify you could purify he could purify we could purify you could purify they could purify	I could be purifying you could be purifying he could be purifying we could be purifying you could be purifying they could be purifying
Perfecto	Perfecto con V-ing
I could have purified you could have purified he could have purified we could have purified you could have purified they could have purified	I could have been purifying you could have been purifying he could have been purifying we could have been purifying you could have been purifying they could have been purifying

Negación

Forma simple	Forma con V-ing
I couldn't purify you couldn't purify he couldn't purify we couldn't purify you couldn't purify they couldn't purify	I couldn't be purifying you couldn't be purifying he couldn't be purifying we couldn't be purifying you couldn't be purifying they couldn't be purifying
Perfecto	Perfecto con V-ing
I couldn't have purified you couldn't have purified he couldn't have purified we couldn't have purified you couldn't have purified they couldn't have purified	I couldn't have been purifying you couldn't have been purifying he couldn't have been purifying we couldn't have been purifying you couldn't have been purifying they couldn't have been purifying

Forma interrogativa

Forma simple	Forma con V-ing
could I purify? could you purify? could he purify? could we purify? could you purify? could they purify?	could I be purifying? could you be purifying? could he be purifying? could we be purifying? could you be purifying? could they be purifying?
Perfecto	Perfecto con V-ing
could I have purified? could you have purified? could he have purified? could we have purified? could you have purified? could they have purified?	could I have been purifying? could you have been purifying? could he have been purifying? could we have been purifying? could you have been purifying? could they have been purifying?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I purify? couldn't you purify? couldn't he purify? couldn't we purify? couldn't you purify? couldn't they purify?	couldn't I be purifying? couldn't you be purifying? couldn't he be purifying? couldn't we be purifying? couldn't you be purifying? couldn't they be purifying?
Perfecto	Perfecto con V-ing
couldn't I have purified? couldn't you have purified? couldn't he have purified? couldn't we have purified? couldn't you have purified? couldn't they have purified?	couldn't I have been purifying? couldn't you have been purifying? couldn't he have been purifying? couldn't we have been purifying? couldn't you have been purifying? couldn't they have been purifying?