改错He is younger and stronger than you do.为什么要删去do

改错He is younger and stronger than you do.为什么要删去do 改错：He is younger and stronger than you do为什么要去掉do 说清楚 My younger siser is heavy and medium high.单句改错 He is(much)younger and stronger than you.括号内是否正确? A pair of glass is on her desk.哪里错了?My younger sister wants to a coach.改错Jane Austin is good in writing and reading.改错 Between you and he,there is a difference.改错 He is very clever and work out the question 改错 He sister is ( )than he A.younger five years B.five years younger C.five year youngerD.five younger years Mary's two year younger than him.改错 My bag is lighter than him.改错 改错：My father is lively and energetic and he is not very patient i am younger than him 对还是 i am younger than he is对?为什么? He is as heavy as his younger brother . He is as heavy as his younger brother . Mr smith is a 80-year-old man and he is very kind.改错 is he your mother改错 Is it he bag 改错 改错 Is this he pen Is he Mr.smith 改错