2 sentences

1. 郭先生是我们的新老师。

   Guō xiān​sheng shì wǒ​men de xīn lǎo​shī.

   Mr. Guo is our new teacher.

   Source: Dong Chinese Dictionary

2. 那座古城墙分为内外两层，外面的那一层被称为郭。

   nà zuò gǔ​chéng qiáng fēn​wéi nèi​wài liǎng céng, wài​miàn de nà yī céng bèi chēng​wéi guō.

   The ancient city wall was divided into inner and outer layers; the outer layer was called the 'Guo'.

   Source: Dong Chinese Dictionary