3 sentences

1. 窗外是一片浓郁的绿荫。

   chuāng wài shì yī piàn nóng​yù de lǜ​yīn.

   Outside the window is a lush expanse of green shade.

   Source: Dong Chinese Dictionary

2. 山上林木极丰，到处都是绿荫。

   shān​shàng lín​mù jí fēng, dào​chù dōu shì lǜ​yīn.

   The mountain is densely forested, with shade everywhere.

   Source: Dong Chinese Dictionary

3. 公园里的长椅都设置在绿荫下，供游客们乘凉。

   gōng​yuán lǐ de cháng​yǐ dōu shè​zhì zài lǜ​yīn xià, gōng yóu​kè men chéng​liáng.

   The benches in the park are all placed in the shade for visitors to enjoy the cool air.

   Source: Dong Chinese Dictionary