3 sentences

1. 他器宇轩昂，给人留下深刻印象。

   tā qì​yǔ xuān áng, gěi rén liú​xià shēn​kè yìn​xiàng.

   He has a dignified and imposing presence, leaving a deep impression.

   Source: Dong Chinese Dictionary

2. 上海世博会的中国展馆给游客留下了深刻印象。

   Shàng​hǎi Shì​bó​huì de Zhōng​guó zhǎn​guǎn gěi yóu​kè liú​xià le shēn​kè yìn​xiàng.

   The China Pavilion at the Shanghai World Expo left a deep impression on visitors.

   Source: Dong Chinese Dictionary

3. 这次去井冈山旅行，秀丽的山水景色给我留下了深刻印象。

   zhè cì qù Jǐng​gāng Shān lǚ​xíng, xiù​lì de shān​shuǐ jǐng​sè gěi wǒ liú​xià le shēn​kè yìn​xiàng.

   During this trip to the Jinggang Mountains, the beautiful scenery left a deep impression on me.

   Source: Dong Chinese Dictionary