作宾语。词典解释如下：
B.transitive verb①(let down)使失望 he felt he had failed his family他感到辜负了家人 his courage failed him他失去了勇气 my memory often fails me these days近来我经常忘事 words fail me!我不知道该怎么说！ ②(not meet standard)未通过 ‹exam, interview, test›; 未通过…的考试 ‹subject›; 评定…为不及格 ‹person›to fail French法语考试不及格 the examiner failed all the candidates这位考官给所有的考生都打了不及格 to fail a drugs test没有通过药检
③(not complete, not do)未能
to fail to do [something]未能做某事
he failed to keep his word他没有信守诺言
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