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- His reason failed him. 他失去了理性。
- His friends failed him when he needed their help most. 当他最需要帮助的时候,他的朋友们却辜负了他。
- His courage failed him at the last moment. 他在最后一刻失去了勇气。
- His friend fail him when he needed their help most. 当他最需要帮助的时候，他的朋友们却辜负了他。
- The poor old fellow has lost his reason. 这可怜的老头发疯了。
- The misfortunes almost deprived him of his reason. 这些不幸几乎使他丧失了理智。
- His friends failed him when he most needed them. 当他最需要朋友的时候，他们却令他失望。
- His words failed him for the moment. 他一时说不出话来。
- Oliver tried to reply, but his tongue failed him. 奥立弗想要回答，可是舌头不听使唤。
- His courage failed him in the end. ＂到最后，他泄气了。＂
- The proctor demanded (of him) his reason for his conduct. 学监要他说出他的行为的理由。
- His [Her] tongue failed him [her]. 他[她]（因害怕等）而说不出话来。
- His (her) tongue failed him (her). 他(因恐怖等而)说不出话
- At the last minute his courage failed him. 在关键时刻，他失去了勇气。
- I don't fully understand his reasons for leaving. 我不完全理解他离开的理由。
- I'm not sure whether to pass him or fail him; he's a borderline case. 我拿不定主意给他及格还是不及格，他处于两可的情况下。
- He omitted to state his reasons. 他未叙述自己的理由。
- Those misfortunes almost deprived him of his reason. 那些不幸事件几乎使他失去理智。
- His reasoning is weak, even shabby. 他的论证软弱无力，甚至可以说很拙劣。
- That is the only weak link in his reasoning. 那是他推理中唯一的薄弱环节。
