Decide if the "personal a" is necessary in the following sentence. Necesito _____ un abogado.
Answer: The "personal a" is not necessary, but it is optional.
Necesito un abogado or necesito a un abogado.
Both are correct sentences
I need a lawyer.
Explanation: "un abogado" is the direct object of the verb "necesitar". In Spanish the preposition "a" is used when the direct object is a person and is omitted when the direct object is a thing. Since "un abogado" is a person, this direct object should have the preposition "a", but if the preposition is not used it is considered as an object, an instrument, not a person. It is an option.