是

• What is the speed limit on the motorway ?
  高速公路的速度限制是多少？
• You know treason is a capital offence .
  你知道背叛是一种严重的罪行。
• "somebody's got to die," he agreed .
  “是得有人先死去，”他附和道。
• Lord was right about his own record .
  洛德对自己成绩的看法是正确的。
• It was john who thrust a person aside .
  是约翰把一个人猛推在一旁的。
• You're letting prejudice carry you away .
  你是让偏见左右你的一切了。
• Her visitor's attitude was a critical one .
  她的客人是来兴师问罪的。
• We ought to follow her good example .
  她是个好榜样，我们应当仿效她。
• He had been a heavyweight prize-fighter .
  他曾经是重量级职业拳击手。
• Their concern seems to be unwarranted .
  他们的担心似乎是没有必要的。