過去分詞にsee
答seen
see → saw → seen
過去分詞にbuy
答bought
buy → bought → bought
過去分詞にsend
答sent
send → sent → sent
過去分詞にhold
答held
hold → held → held
受動態にMs. Green spoke English.
答English was spoken by Ms. Green.
was + spoken + by ~
受動態にMy sister used this computer.
答This computer was used by my sister.
was + used + by ~
受動態にThe boys broke the window.
答The window was broken by the boys.
was + broken + by ~
否定文にThese keys were found by a young man.
答These keys were not found by a young man.
were のうしろに not
否定文にThis soup was cooked by my grandmother.
答This soup was not cooked by my grandmother.
was のうしろに not
疑問文に→Yesで答えるThe game was won by the team.
答Was the game won by the team? ― Yes, it was.
Was を主語の前に。答えの主語は it