Jawaban:

1. The tree was climbed by him yesterday.

2. The plane is flown carefully by the pilot.

3. A glass of milk was drunk by me last night.

4. The material is explained clearly by Mrs. Linda.

5. Several nice cares are made by Indonesia.

6. Mathematics is studied by the students on Sundays.

7. Football isalwaysplayed by them.

8. My cats areusuallyfed three times a day by me.

9. I am loved by her.

10. A car was driven by father this morning.

11. A letter is written by Budi.

12. Some school rooms are cleaned by us.

13. The snakes were killed by the man one hour ago.

14. Two goats are attacked by the tiger in the forest.

15. Two banks are robbed by some thieves at 2 A.M.

16. The video files were downloaded by him last night.

17. Some messages were sent by her two days ago.

18. Two kites are made by Farah and Anto.

19. Donita and Aries' grandma is visited by them once a month.

20. Rice is cooked by mother in the morning.

Penjelasan:

Format kal. active:

Subj + to be + V + Obj (+ ket. lainnya)

Format kal. passive:

Obj + to be + V3 (+ by Subj)

----- ----- ----- ----- ----- ----- ----- ----- ----- -----

Poin yang perlu ditegaskan dalam transformasi kalimat yang semula sifatnya aktif menjadi pasif:

> obyekyang dikenakan aksi ditaruhdi awal kalimat

> sebagai ganti, subyekyang memberlakukan aksi diletakkansetelah verba/kata kerja

> verba/kata kerjawajib diubahke bentuk past participle (V3)

> tenses perlu dipertahankan originalitasnya dari kalimat awal, jangan dirubah, bila:

- awalnya berupa past simple (yaitu bentuk V2, baik itu past simple/past continuous) -> was/were + V3

misal I: They were eating hamburgers. =Hamburgerswere being eatenby them(past continuous).

misal II: We drank a bottle of milk. =A bottle of milkwere drunk by us (past simple).

- awalnya berupa infinitive (yaitu bentuk V1/original form, baik itu present simple/present continuous) -> is/am/are + V3

misal I: They are eating hamburgers. =Hamburgersare being eaten by them (simple continuous).

misal II: We drink a bottle of milk. =A bottle of milkis drunk by us (simple present).