Conjugación del verbo inglés
CAN SCRATCH

Verbo regular: scratch - scratched - scratched

Afirmación

Forma simple	Forma con V-ing
I can scratch you can scratch she can scratch we can scratch you can scratch they can scratch	I can be scratching you can be scratching she can be scratching we can be scratching you can be scratching they can be scratching
Perfecto	Perfecto con V-ing
I can have scratched you can have scratched she can have scratched we can have scratched you can have scratched they can have scratched	I can have been scratching you can have been scratching she can have been scratching we can have been scratching you can have been scratching they can have been scratching

Negación

Forma simple	Forma con V-ing
I cannot scratch you cannot scratch she cannot scratch we cannot scratch you cannot scratch they cannot scratch	I cannot be scratching you cannot be scratching she cannot be scratching we cannot be scratching you cannot be scratching they cannot be scratching
Perfecto	Perfecto con V-ing
I cannot have scratched you cannot have scratched she cannot have scratched we cannot have scratched you cannot have scratched they cannot have scratched	I cannot have been scratching you cannot have been scratching she cannot have been scratching we cannot have been scratching you cannot have been scratching they cannot have been scratching

Forma interrogativa

Forma simple	Forma con V-ing
can I scratch? can you scratch? can she scratch? can we scratch? can you scratch? can they scratch?	can I be scratching? can you be scratching? can she be scratching? can we be scratching? can you be scratching? can they be scratching?
Perfecto	Perfecto con V-ing
can I have scratched? can you have scratched? can she have scratched? can we have scratched? can you have scratched? can they have scratched?	can I have been scratching? can you have been scratching? can she have been scratching? can we have been scratching? can you have been scratching? can they have been scratching?

Forma interro-negativa

Forma simple	Forma con V-ing
can I not scratch? can you not scratch? can she not scratch? can we not scratch? can you not scratch? can they not scratch?	can I not be scratching? can you not be scratching? can she not be scratching? can we not be scratching? can you not be scratching? can they not be scratching?
Perfecto	Perfecto con V-ing
can I not have scratched? can you not have scratched? can she not have scratched? can we not have scratched? can you not have scratched? can they not have scratched?	can I not have been scratching? can you not have been scratching? can she not have been scratching? can we not have been scratching? can you not have been scratching? can they not have been scratching?