4 sentences

1. 牛在树荫下倒嚼。

   niú zài shù​yīn xià dǎo​jiào.

   The cow was chewing its cud under the shade of a tree.

   Source: Dong Chinese Dictionary

2. 老人们在树荫下纳凉聊天。

   lǎo​rén men zài shù​yīn xià nà liáng liáo​tiān.

   The elderly are enjoying the cool shade and chatting under the trees.

   Source: Dong Chinese Dictionary

3. 正当日中，路上的行人都躲在树荫下避暑。

   zhèng​dāng rì​zhōng, lù shàng de xíng​rén dōu duǒ zài shù​yīn xià bì​shǔ.

   At high noon, pedestrians were all hiding in the shade of trees to escape the heat.

   Source: Dong Chinese Dictionary

4. 炎热的夏天，老爷爷摇着扇子在树荫下乘凉。

   yán​rè de xià​tiān, lǎo yé​ye yáo zhe shàn zi zài shù​yīn xià chéng​liáng.

   On a hot summer day, the old man sat in the shade of a tree fanning himself to keep cool.

   Source: Dong Chinese Dictionary