及物动词
1. fail
1. When I wanted his help he failed me.
当我需要他帮助时，他却使我失望。
2. His courage failed him.
他失去了勇气。
不及物动词
1. Our plan has failed.
我们的计划失败了。
2. He never fails to write to his mother every week.
他从来没有忘记每周给母亲写信。
3. fail
3. Last year the crops failed.
去年农作物歉收。