2 sentences

1. 他努力工作，用以改善家庭生活。

   tā nǔ​lì gōng​zuò, yòng​yǐ gǎi​shàn jiā​tíng shēng​huó.

   He works hard to improve his family's standard of living.

   Source: Dong Chinese Dictionary

2. 古时私塾老师常备有楚木，用以惩罚不听话的学生。

   gǔ​shí sī​shú lǎo​shī cháng bèi​yǒu chǔ mù, yòng​yǐ chéng​fá bù tīng​huà de xué​sheng.

   In ancient times, private school teachers often kept switches to punish disobedient students.

   Source: Dong Chinese Dictionary