4 sentences for 負 (fù — betray)

1. 他的表现不负所期。

   tā de biǎo​xiàn bù fù suǒ qī.

   His performance lived up to expectations.

   Source: Dong Chinese Dictionary

2. 苍天不负有心人。

   cāng tiān bù fù yǒu​xīn​rén.

   Heaven never fails those who persevere.

   Source: Dong Chinese Dictionary

3. 既然答应了别人，就绝不能做负约的事。

   jì​rán dā​ying le bié​ren, jiù jué bù néng zuò fù yuē de shì.

   Since you have given your word, you must never break the agreement.

   Source: Dong Chinese Dictionary

4. 这种不负责任的行为侵害了广大消费者的利益。

   zhè zhǒng bù fù zé​rèn de xíng​wéi qīn hài le guǎng​dà xiāo​fèi​zhě de lì​yì.

   This irresponsible behavior has harmed the interests of the general consumers.

   Source: Dong Chinese Dictionary