4 sentences

1. 老师夸他是个好学生。

   lǎo​shī kuā tā shì gè hǎo xué​sheng.

   The teacher praised him for being a good student.

   Source: Dong Chinese Dictionary

2. 他被大家夸得脸都红了，感到非常不好意思。

   tā bèi dà​jiā kuā de liǎn dōu hóng le, gǎn​dào fēi​cháng bù​hǎo​yì​si.

   He blushed from all the praise and felt very embarrassed.

   Source: Dong Chinese Dictionary

3. 他这人就爱自夸。

   tā zhèi rén jiù ài zì kuā.

   He just loves to boast about himself.

   Source: Dong Chinese Dictionary

4. 夸克是构成物质的基本粒子。

   kuā kè shì gòu​chéng wù​zhì de jī​běn lì​zǐ.

   Quarks are fundamental particles that make up matter.

   Source: Dong Chinese Dictionary