以来

• Two weeks has passed since the new term began ...
  开学以来两个星期已经过去了。
• I was numb from weeks of uncertainty .
  数周以来捉摸不定的事态使我思想有点麻木。
• It is two years since we parted .
  我们分别以来有两年了。
• I have been here since 1947 .
  1947年以来我一直住在这里。
• Anger had preyed upon me continually for weeks .
  几个星期以来，愤恨使我感到苦恼。
• Since then, two more planets have been discovered .
  自那时以来，又发现了两颗行星。
• He has let himself go a bit since he lost his job .
  他自从失业以来变得有点邋遢了。
• The increase has been moderate since 1954 .
  自一九五四年以来，增长的速度已经减慢。
• We have been wavering for a century and a half .
  我们一个半世纪以来，一直犹豫不决。
• He has thinned down a lot since he went on a diet .
  他自从节制饮食以来已经瘦了不少。