Gimnabagaimana cara mengubah active voice ke passive voice begitu jga sebaliknya dari teks visiting niagara falls? ,plis bantuin

1. lihat kalimatnya. harus punya subyek + kata kerja + obyek.
2. ubah polanya ke pasif. obyek jd subyek + be + v3 + by subyek jd obyek.
3. contoh :
active : I visited the niagara falls last holiday.
passive : the niagara falls were visited by me last holiday.
kalau teks nya recount biasanya pakai simple past jd pasifnya S + was/were + v3 + by ....