Intransitive verbs are verbs that cannot be used with a direct object. Some intransitive verbs can be used with an indirect object: ho telefonato a Maria Teresa ‘I telephoned to Maria Teresa’. Some can only be used without any object: siamo arrivati alla stazione con un’ora di ritardo ‘we arrived at the station an hour late’. Many of these verbs take the auxiliary essere, but some take avere: abbiamo camminato molto ‘we walked a lot’. Sometimes a verb that can be used transitively in English (‘to walk the dog’) cannot be used transitively in Italian (camminare). Some verbs can be used both transitively and intransitively.