Complex sentence: It can be active, middle or passive and can be used in the present, future, aorist and perfect tense; these tenses normally represent not absolute time but only time relative to the main verb of the sentence.
Split into simpler sentences: It can be active, middle or passive and can be used in the present, future, aorist and perfect tense. These tenses normally represent not absolute time but only time relative to the main verb of the sentence.