Conjugación del verbo inglés
CAN CERTIFICATE

Verbo regular: certificate - certificated - certificated

Afirmación

Forma simple	Forma con V-ing
I can certificate you can certificate she can certificate we can certificate you can certificate they can certificate	I can be certificating you can be certificating she can be certificating we can be certificating you can be certificating they can be certificating
Perfecto	Perfecto con V-ing
I can have certificated you can have certificated she can have certificated we can have certificated you can have certificated they can have certificated	I can have been certificating you can have been certificating she can have been certificating we can have been certificating you can have been certificating they can have been certificating

Negación

Forma simple	Forma con V-ing
I cannot certificate you cannot certificate she cannot certificate we cannot certificate you cannot certificate they cannot certificate	I cannot be certificating you cannot be certificating she cannot be certificating we cannot be certificating you cannot be certificating they cannot be certificating
Perfecto	Perfecto con V-ing
I cannot have certificated you cannot have certificated she cannot have certificated we cannot have certificated you cannot have certificated they cannot have certificated	I cannot have been certificating you cannot have been certificating she cannot have been certificating we cannot have been certificating you cannot have been certificating they cannot have been certificating

Forma interrogativa

Forma simple	Forma con V-ing
can I certificate? can you certificate? can she certificate? can we certificate? can you certificate? can they certificate?	can I be certificating? can you be certificating? can she be certificating? can we be certificating? can you be certificating? can they be certificating?
Perfecto	Perfecto con V-ing
can I have certificated? can you have certificated? can she have certificated? can we have certificated? can you have certificated? can they have certificated?	can I have been certificating? can you have been certificating? can she have been certificating? can we have been certificating? can you have been certificating? can they have been certificating?

Forma interro-negativa

Forma simple	Forma con V-ing
can I not certificate? can you not certificate? can she not certificate? can we not certificate? can you not certificate? can they not certificate?	can I not be certificating? can you not be certificating? can she not be certificating? can we not be certificating? can you not be certificating? can they not be certificating?
Perfecto	Perfecto con V-ing
can I not have certificated? can you not have certificated? can she not have certificated? can we not have certificated? can you not have certificated? can they not have certificated?	can I not have been certificating? can you not have been certificating? can she not have been certificating? can we not have been certificating? can you not have been certificating? can they not have been certificating?