4 sentences

1. 她是什么时候去蒙古的？

   tā shì shén​me shí​hou qù Měng​gǔ de?

   When did she go to Mongolia?

   Source: Tatoeba

2. 成吉思汗被推举为蒙古帝国的大汗。

   Chéng​jí​sī​hán bèi tuī​jǔ wéi Měng​gǔ dì​guó de dà​hán.

   Genghis Khan was elected as the Great Khan of the Mongol Empire.

   Source: Dong Chinese Dictionary

3. 铁木真后来统一了蒙古各部，成为了成吉思汗。

   Tiě​mù​zhēn hòu​lái tǒng​yī le Měng​gǔ gè bù, chéng​wéi le Chéng​jí​sī​hán.

   Temujin later unified the Mongolian tribes and became Genghis Khan.

   Source: Dong Chinese Dictionary

4. 在暑假期间，我们全家人去蒙古的草原上骑马旅行。

   zài shǔ​jià qī​jiān, wǒ​men quán jiā​rén qù Měng​gǔ de cǎo​yuán shàng qí​mǎ lǚ​xíng.

   During the summer vacation, our whole family went horseback riding on the grasslands in Mongolia.

   Source: Dong Chinese Dictionary