過去分詞にfind
答found
find → found → found
過去分詞にwin
答won
win → won → won
過去分詞にsing
答sung
sing → sang → sung
過去分詞にknow
答known
know → knew → known
受動態にMany people read these books.
答These books were read by many people.
were + read + by ~
受動態にMy father washed the car.
答The car was washed by my father.
was + washed + by ~
受動態にThe students cleaned the classroom.
答The classroom was cleaned by the students.
was + cleaned + by ~
否定文にThis song was sung by a famous singer.
答This song was not sung by a famous singer.
was のうしろに not
否定文にThat house was built by my uncle.
答That house was not built by my uncle.
was のうしろに not
疑問文に→Yesで答えるThese pictures were taken by Emi.
答Were these pictures taken by Emi? ― Yes, they were.
Were を主語の前に。答えの主語は they