下線部を代名詞にKen is in the brass band.
答He is in the brass band.
主格（Ken → he）
下線部を代名詞にEmi is good at soccer.
答She is good at soccer.
主格（Emi → she）
下線部を代名詞にMr. Sato is very kind to us.
答He is very kind to us.
主格（Mr. Sato → he）
下線部を代名詞にI often help Ms. Green.
答I often help her.
目的格（Ms. Green → her）
下線部を代名詞にDo you know Tom and Ken?
答Do you know them?
目的格（Tom and Ken → them）
下線部を代名詞にEveryone likes my sister.
答Everyone likes her.
目的格（my sister → her）
下線部を代名詞にThis is my parents' new car.
答This is their new car.
所有格（my parents' → their）
下線部を代名詞にI like Yuki's bag very much.
答I like her bag very much.
所有格（Yuki's → her）
下線部を代名詞にThis bike is my brother's.
答This bike is his.
所有代名詞（my brother's → his）
下線部を代名詞にThat bag is Kate and Emi's.
答That bag is theirs.
所有代名詞（Kate and Emi's → theirs）