2 sentences for 必须 (bì​xū — required)

1. 你必须要遵守他的命令。

   nǐ bì​xū yào zūn​shǒu tā de mìng​lìng.

   You must obey his orders.

   Source: CCMatrix

2. 你必须要回去。

   nǐ bì​xū yào huí qu.

   You must go back.

   Source: OpenSubtitles