第三部分：总结全文。

普通表达 高级表达 ◆Because of ..., ... has been considered as ...

◆... may have been used for ...

◆... has provided information about / for ... ◆Due to ..., ... has been included as ...

◆... had a practical purpose and could have been used for ...

◆... is of great significance to ... 【范文展示】

普通范文

The crystal glass was discovered in Shitang village in Banshan town of Hangzhou, Zhejiang Province in 1990. It is one of the greatest finds from ancient China.

The glass is 15.4cm tall and has a wide opening. It looks like a modern drinking glass though it is from the Warring States Period. It is made of good natural crystal and shows the excellent craftsmanship at that time. The glass is now in Hangzhou Museum.

Because of its great unique historical and artistic value, the crystal glass has been considered as a national treasure.

高级范文

The crystal glass, which was unearthed in Shitang village in Banshan town of Hangzhou, Zhejiang Province in 1990, is one of the most amazing archaeological discoveries from ancient China.

With a height of 15.4cm and a wide opening, the glass looks no different from a modern drinking glass though it dates back to the Warring States Period. It is made of fine-quality natural crystal. If you take a closer look at this glass, you will be amazed by the superb craftsmanship the people had at that time. The glass is currently preserved in Hangzhou Museum.

Due to its great unique historical and artistic value, the crystal glass has been included as a national treasure.