以前

• Be there by six o'clock for sure .
  你一定要在六点钟以前到那里。
• You didn't use to think i was puzzling .
  你以前可不曾认为我是高深莫测的。
• I opine that it will rain before night .
  我想天黑以前要下雨的。
• They were supposed to be here an hour ago .
  他们应该在一小时以前到达这里。
• He says the tree seems taller than ever .
  他说那棵树看起来比以前更高大了。
• He was markedly more pleasant than before .
  他比以前和气多了。
• It is not nearly so pretty as it was before .
  远不及以前漂亮。
• We can not arrive before friday at best .
  我们无论如何星期五以前也到不了。
• People are not so honest as they once were ..
  人们现在不如以前那样诚实了。
• I 'm afraid i 'll be tied up until 7 o'clock .
  我7点钟以前恐怕抽不出身来。