3 sentences

1. 洪先生是我的邻居。

   Hóng xiān​sheng shì wǒ de lín​jū.

   Mr. Hong is my neighbor.

   Source: Dong Chinese Dictionary

2. 他的家乡在山西省洪洞县。

   tā de jiā​xiāng zài Shān​xī Shěng Hóng tóng xiàn.

   His hometown is Hongtong County in Shanxi Province.

   Source: Dong Chinese Dictionary

3. 由于连续降雨，大江里的水势显得极洪。

   yóu​yú lián​xù jiàng​yǔ, dà​jiāng lǐ de shuǐ​shì xiǎn​de jí hóng.

   Due to the continuous rainfall, the river's water flow has become extremely powerful.

   Source: Dong Chinese Dictionary