The first trenches that were cut into a 500-acre site at Tell Hamoukar,Syria,have yielded strong evidence for centrally administered complex societies in northern regions of the Middle East that were arising simultaneously with but independently of the more celebrated city-states of southern Mesopotamia,in what is now southern Iraq.

正确选项是把The first trenches that were cut into...改为了the first trenches cut into...。

我知道the first trenches ,cut into...这种分词表达的形式是比定语从句表达更简洁。

但是这边cut之前没有逗号，这是一种什么结构啊？也可以这样修饰trenches吗？

the first trenches ,cut into...这个表达看起来怎么这么别扭呢……没有逗号才是常见的表达啊 the first trenches cut into是省略了that were以后的形式 that引导定语从句，如果that做主语的话，那么，要么that和谓语都写出来，要么就that和谓语都省略，如果that做宾语的话，那么that就必须得省略了

that在这里是作主语 过去分词修饰的时候中间是不可以加逗号的，如果加了逗号，后面要用which做关系代词，那就是非限制性从句了，that引导的是限制性定语从句

非限制性定语从句中，关系代词都不能省略的。