是否

• Have you settled how it will be done ?
  你们是否已决定如何处理这件事？
• Were those patients now at risk ?
  那些病人现在是否处于危险之中呢？
• I mind whether you like me or not .
  你是否喜欢我，我很重视这件事。
• She didn't know if she should tell on him .
  她不知道她是否应该揭发他。
• I query whether his word can be relied on .
  我怀疑他的话是否可靠。
• Whether to accept the offer was a teaser .
  是否接受那项提议还是个难题。
• Has the party been taken over by extremists ?
  该党是否已被极端分子控制？
• Have you had a hard day at the office ?
  你今天在办公室是否忙得不可开交？
• Is there a lot of criminal action in taipei ?
  台北是否有很多犯罪行为？。