in a jacket , with a jacket on 为什么一个用in一个用on?

in a jacket , with a jacket on 为什么一个用in一个用on? jacket with a head cover That is a jacket in English.对a jacket提问 the boy in a jacket looks very cool为什么不用with而用in This is a jacket in englishi 对jacket进行提问 She is in a red jacket. Are you in a while jacket 中文 翻译：a book with an attractive dust-jacket is this a jacket A blue jacket是什么 A blue jacket是什么 The man in a black jacket is my father解释 ( ) boy in blue jacket is my brotherA.the B.a Are you in a white jacket的回答 He is dressed in a black jacket.=He ()()a black jacket,注：两个括号中不能填is wearing The girl with long hair is my sister.中with long hair做the girl的定语,那为什么这个句子中要用in?The girl in a purple jacket is my sister.老师说不能用with是为什么? (4/4)irl with a short skirt and a lonnnng jacket.中文是什麼意思? Today_____ am in a red sweater and _____ is in a biue jacket.