3 sentences for 不得了 (bù​dé​liǎo — extremely)

1. 马路上人挤人，轧得不得了。

   mǎ​lù shàng rén jǐ rén, gá de bù​dé​liǎo.

   The road was packed with people; it was incredibly crowded.

   Source: Dong Chinese Dictionary

2. 你的妈妈会高兴得不得了。

   nǐ de mā​ma huì gāo​xìng de bù​dé​liǎo.

   Your mum will be thrilled.

   Source: OpenSubtitles

3. 他听到这个消息，高兴得不得了。

   tā tīng​dào zhè​ge xiāo​xi, gāo​xìng de bù​dé​liǎo.

   He was incredibly happy when he heard the news.

   Source: Dong Chinese Dictionary