- He was threatened by the robber. ［by：行為者］
- He was threatened with a knife. ［with：道具］
- Paper is made from wood. ［from：原料］
- Book is made of paper. ［of：材料］
［by以外の前置詞を取る受動態］
- He is known to everyone. ［to：対象］
- I was surprised at the news. ［at：感情の原因］
- The garden is covered with flowers. ［with：所有］
- I'm interested in playing guitar. ［in：関連］
- We were very pleased with that. ［with：対象］
- My bag was filled with water. ［with：所有］
- The exchange rates are listed daily in the newspaper. ［in：場所］
- I am scared of ghost. ［of：分離］
- He was killed in the traffic accident. ［in：時］
→ 課題 #05
→ 文法 #06 受動態
→ 文法 #19 受動態 #3（第３-５文型）
→ 文法 #34 助動詞の一覧
