He's changed.He's not the man he was.为什么会用这些种时态呢

He's changed.He's not the man he was.为什么会用这些种时态呢 He is the man which he was.这里为什么不用who而用which呢, He was not the man（ ）he was before.为什么填what He is not the man that he was.意思 He is not the man that he was before. he is not the same man as he was 为什么as 作表语. he is not the man ____he was twenty years ago.为什么不可以用that He's the man of f______ words A man was sitting in the doctor’s office.He was telling the A man was sitting in the doctor’s office. He was telling the he is nothing special.he's only the average man .为什么不用common 英语翻译A man was sitting in the doctor’s office.He was telling