4 sentences

1. 可惜我的计划适得其反。

   kě​xī wǒ​de jì​huà shì​dé​qí​fǎn.

   Unfortunately, my plan backfired.

   Source: OpenSubtitles

2. 有时候，与老板友好相处可能会适得其反。

   yǒu shí​hou, yǔ lǎo​bǎn yǒu​hǎo xiāng​chǔ kě​néng huì shì​dé​qí​fǎn.

   Sometimes, being friendly with your boss can be counterproductive.

   Source: CCMatrix

3. 你的独立“我不需要任何人”的态度适得其反。

   nǐ de dú​lì“ wǒ bù​xū​yào rèn​hé​rén” de tài​du shì​dé​qí​fǎn.

   Your independent “I don’t need anybody” attitude is counterproductive.

   Source: CCMatrix

4. 事实上，告诉孩子他们有多聪明可能会适得其反。

   shì​shí​shang, gào​sù hái​zi tā​men yǒu duō cōng​ming kě​néng huì shì​dé​qí​fǎn.

   In fact, telling kids how smart they are can be counterproductive.

   Source: CCMatrix