3 sentences

1. 这个国家的西北部地区大多是连绵的高山。

   zhè gè guó​jiā de Xī​běi​bù dì​qū dà​duō shì lián​mián de gāo​shān.

   Most of the northwestern region of this country consists of rolling mountain ranges.

   Source: Dong Chinese Dictionary

2. 随着春雨连绵，河水浸渐漫过了低矮的河岸。

   suí​zhe chūn​yǔ lián​mián, hé​shuǐ jìn jiàn màn​guò le dī'ǎi de hé'àn.

   As the spring rains continued, the river water gradually overflowed the low banks.

   Source: Dong Chinese Dictionary

3. 放眼望去，近处是绿油油的田野，远处是连绵起伏的山峦。

   fàng​yǎn wàng qù, jìn​chù shì lǜ​yóu​yóu de tián​yě, yuǎn​chù shì lián​mián qǐ​fú de shān​luán.

   Looking as far as the eye can see, there are green fields nearby and rolling hills in the distance.

   Source: Dong Chinese Dictionary