1. He explained that his lameness was due to an accident.
   他解释他的跛脚是意外造成的。
2. They are due to arrive in Seattle on March the second.
   货预定在3月2日送达西雅图.
3. The engine is due for an overhaul.
   那台发动机该大修了
4. His failure is due to his carelessness.
   他的失败是由于粗心
5. My passport is due to expire.
   我的护照要到期了。

　1个动词解释