是不是

• Do you shop around a lot for bargains ?
  你是不是逛许多商店来讨价还价？
• Is he too lazy to make the effort ?
  他是不是太懒了，不愿花气力呢？
• Was he well? was he big and bold ?
  他好吗？是不是又魁梧，又神气？
• I'm wondering if that's such a healthy thing .
  我不知道这事是不是可行。
• Are you prepared to assume your duties ?
  你是不是打算负起你的责任来呢？
• Are you going to put on your dark suit ?
  你是不是穿上那套黑礼服？
• He wondered if the batteries were dead .
  他怀疑是不是电池用完了。
• Hasn't job behaved better than god ?
  乔布的举动是不是比上帝更高超些呢？
• Can we perhaps try another route ?
  我们是不是可以另试试别的路线？
• It's terrible weather we are having, isn't it ?
  今天天气真糟糕，是不是？