Conjugación del verbo inglés
CAN YAWN

Verbo regular: yawn - yawned - yawned

Afirmación

Forma simple	Forma con V-ing
I can yawn you can yawn he can yawn we can yawn you can yawn they can yawn	I can be yawning you can be yawning he can be yawning we can be yawning you can be yawning they can be yawning
Perfecto	Perfecto con V-ing
I can have yawned you can have yawned he can have yawned we can have yawned you can have yawned they can have yawned	I can have been yawning you can have been yawning he can have been yawning we can have been yawning you can have been yawning they can have been yawning

Negación

Forma simple	Forma con V-ing
I cannot yawn you cannot yawn he cannot yawn we cannot yawn you cannot yawn they cannot yawn	I cannot be yawning you cannot be yawning he cannot be yawning we cannot be yawning you cannot be yawning they cannot be yawning
Perfecto	Perfecto con V-ing
I cannot have yawned you cannot have yawned he cannot have yawned we cannot have yawned you cannot have yawned they cannot have yawned	I cannot have been yawning you cannot have been yawning he cannot have been yawning we cannot have been yawning you cannot have been yawning they cannot have been yawning

Forma interrogativa

Forma simple	Forma con V-ing
can I yawn? can you yawn? can he yawn? can we yawn? can you yawn? can they yawn?	can I be yawning? can you be yawning? can he be yawning? can we be yawning? can you be yawning? can they be yawning?
Perfecto	Perfecto con V-ing
can I have yawned? can you have yawned? can he have yawned? can we have yawned? can you have yawned? can they have yawned?	can I have been yawning? can you have been yawning? can he have been yawning? can we have been yawning? can you have been yawning? can they have been yawning?

Forma interro-negativa

Forma simple	Forma con V-ing
can I not yawn? can you not yawn? can he not yawn? can we not yawn? can you not yawn? can they not yawn?	can I not be yawning? can you not be yawning? can he not be yawning? can we not be yawning? can you not be yawning? can they not be yawning?
Perfecto	Perfecto con V-ing
can I not have yawned? can you not have yawned? can he not have yawned? can we not have yawned? can you not have yawned? can they not have yawned?	can I not have been yawning? can you not have been yawning? can he not have been yawning? can we not have been yawning? can you not have been yawning? can they not have been yawning?