4 sentences

1. 伊先生是我的大学同学。

   Yī xiān​sheng shì wǒ de dà​xué tóng​xué.

   Mr. Yi is my college classmate.

   Source: Dong Chinese Dictionary

2. 自伊时起，他就决定要出国深造。

   zì yī shí qǐ, tā jiù jué​dìng yào chū​guó shēn​zào.

   Since that time, he decided to go abroad for further study.

   Source: Dong Chinese Dictionary

3. 伊谁云从？

   yī shéi yún cóng?

   Who is that person following?

   Source: Dong Chinese Dictionary

4. 两伊战争对中东局势产生了深远影响。

   liǎng Yī zhàn​zhēng duì Zhōng​dōng jú​shì chǎn​shēng le shēn​yuǎn yǐng​xiǎng.

   The Iran-Iraq War had a profound impact on the situation in the Middle East.

   Source: Dong Chinese Dictionary