一道英语选择题

问一道英语选择题Washisfa

愚见选（B）before never 。。。。 until 。。。。 是 not 。。。。 until 。。。。 的变种：直到。。。才。。。 一般用过去式，如：his father never praised him until he became one of the top students in his grade。 “他的父亲直到他在年级中名列前茅才表扬他。” after 不合逻辑，语法 unless 用将来式，如：his father would never praise him unless he became one of the top students in his g...全部

  愚见选（B）before never 。。。。 until 。。。。 是 not 。。。。 until 。。。。 的变种：直到。。。才。。。 一般用过去式，如：his father never praised him until he became one of the top students in his grade。
  “他的父亲直到他在年级中名列前茅才表扬他。” after 不合逻辑，语法 unless 用将来式，如：his father would never praise him unless he became one of the top students in his grade。
   “除非他在年级中名列前茅，否则他的父亲不会表扬他。”。收起