2 sentences

1. 袁先生是一位著名的历史学家。

   Yuán xiān​sheng shì yī wèi zhù​míng de lì​shǐ​xué​jiā.

   Mr. Yuan is a famous historian.

   Source: Dong Chinese Dictionary

2. 袁老师这学期教我们物理，他的课讲得很生动。

   yuán lǎo​shī zhè xué​qī jiāo wǒ​men wù​lǐ, tā de kè jiǎng de hěn shēng​dòng.

   Mr. Yuan is teaching us physics this semester, and his lectures are very engaging.

   Source: Dong Chinese Dictionary