• out of work(失业):He has been out of work for months.(他已经失业好几个月了。)
    out of the work(脱离这项工作):He is out of the work due to illness.(他因为生病脱离了这项工作。)
  • at distance(在远处):The mountains are at distance.(山在远处。)
    at a distance(在一定距离处):We saw the ship at a distance.(我们在一定距离处看到了那艘船。)
  • by day(在白天):He works by day and sleeps by night.(他白天工作,晚上睡觉。)
    by the day(按日计算):They are paid by the day.(他们按日计酬。)
  • in case(以防万一):Take an umbrella in case it rains.(带把伞以防下雨。)
    in the case(在这种情况下):In the case of fire, follow the emergency procedures.(在发生火灾的情况下,遵循紧急程序。)
  • on duty(值班):He is on duty today.(他今天值班。)
    on the duty(在职责上):He is responsible on the duty.(他在职责上有责任。)