3 sentences

1. 我为他的成功感到高兴。

   wǒ wèi tā de chéng​gōng gǎn dào gāo​xìng.

   I'm happy for his success.

   Source: CCMatrix

2. 我们为彼此的成功感到自豪。

   wǒ​men wèi bǐ​cǐ de chéng​gōng gǎn dào zì​háo.

   We are proud of each other’s success.

   Source: CCMatrix

3. 我真的为你和你的成功感到高兴。

   wǒ zhēn​de wèi nǐ hé nǐ de chéng​gōng gǎn dào gāo​xìng.

   I truly am happy for you and your success.

   Source: CCMatrix