3 sentences

1. 这座石桥建于明代年间。

   zhè zuò shí​qiáo jiàn yú Míng​dài nián​jiān.

   This stone bridge was built during the Ming Dynasty.

   Source: Dong Chinese Dictionary

2. 故宫建于明代。

   Gù​gōng jiàn yú Míng​dài.

   The Forbidden City was built during the Ming Dynasty.

   Source: Dong Chinese Dictionary

3. 他在明代考中了老友，在乡里很有声望。

   tā zài Míng​dài kǎo​zhòng le lǎo​yǒu, zài xiāng​lǐ hěn yǒu shēng​wàng.

   He passed the imperial examination during the Ming Dynasty and earned a great reputation in his hometown.

   Source: Dong Chinese Dictionary