(误)Have you done homework?
(正)Have you done your homework?(表示做功课用do one's homework.)
(误)Those are some books of our teacher.
(正)Those are some books of our teacher's.(应用双重所有格形式。)
(误)This is my brother John book.
(正)This is my brother John's book.(John是brother的同位语，John的书用John's book.)
(误)The policemen caught him by his arm.
(正)The policemen caught him by the arm.(抓住身上某个部位用the，不用代词的所有格。)
(误)a ten years old child
(误)a child of ten year old
(误)a ten year old child
(误)a ten-years-old child
(正)a ten-year-old child