中式英語(yǔ)口語(yǔ)糾錯(cuò):Be busy doing something

【中文這樣說(shuō)】
    我哥哥一直在忙著準(zhǔn)備他的期末考試.
    【英文對(duì)比翻譯】
    Chinese Style My brother has been busy in preparing for his final examination.
    American Style My brother has been busy preparing for his final examination.
    Be busy doing sth為固定用法,中間不應(yīng)加in