Identify whether the sentence uses active voice or passive voice.

The iPod was first released by Apple in the early 2000’s.

Many accessories have been made for the iPod line.

hm, switch the relative; nominative and indefinite; objective ? not too bright in the knowledge of the english.

remember, the goal of an adjective clause is to add more information to a noun or a pronoun. as you can see from the examples above, you can add information by including a longer adjective clause or tighten up a sentence by turning the adjective clause into an adjective phrase.