5 sentences

1. 当时我欣喜若狂。

   dāng​shí wǒ xīn​xǐ​ruò​kuáng.

   I was ecstatic.

   Source: OpenSubtitles

2. 我们欣喜若狂。

   wǒ​men xīn​xǐ​ruò​kuáng.

   We were overjoyed.

   Source: Tatoeba

3. 我原以为获胜会让我欣喜若狂。

   wǒ yuán yǐ​wéi huò​shèng huì ràng wǒ xīn​xǐ​ruò​kuáng.

   I thought I'd be overjoyed if we won.

   Source: OpenSubtitles

4. 我欣喜若狂。

   wǒ xīn​xǐ​ruò​kuáng.

   I'm ecstatic.

   Source: OpenSubtitles

5. 得知自己买的彩票中了头奖，他一时间欣喜若狂。

   dé​zhī zì​jǐ mǎi de cǎi​piào zhòng le tóu​jiǎng, tā yī​shí​jiān xīn​xǐ​ruò​kuáng.

   He was ecstatic when he learned that his lottery ticket had won the jackpot.

   Source: Dong Chinese Dictionary