13.会了这个方法就能说对80%的英文

It is originated from mutton and beef custard in ancient times that was listed a royal food in the Western Zhou Dynasty as early as 1100 BC. 

代词：It 形式主语

被动语态：was listed

定语从句：

1. It is originated from mutton and beef custard in ancient times.

2. Mutton and beef custard was listed a royal food in the Western Zhou Dynasty as early as 1100 BC.

它是古代牛羊羹的基础上发展而来的，早在公元前11世纪的西周史就将其列为王室和诸侯的“礼馔”。

举一反三：

“它起源于西安，西安是中国的古都之一。”

It is originated in Xi'an that/which was listed as a ancient capital in China.