Uluru is the big rock that is also well-known as Aryers Rock

这是一个定语从句,一般先行词放在从句前面,不分开的.
所以rock是先行词.
要是你觉得不可靠的话,参见初中语法书.
再问： 请问 that is also well-known as Aryers Rock 可以移到Uluru后面作它的定语吗?我想also指名字 置前应该不突兀 只是定语从句有点长 读起来很怪 还有我觉得the big rock不能改成 a big rock 你觉得呢？
再答： 可以把that is also well-known as Aryers Rock移到uluru后面。改为：uiuru，which is known as aryer rock, is a big rock.不过这样稍显重复。英文里不太这样说。不清楚这个句子是不是从文章里拿出来的，要是前文有提到，就用the,特指。否则，用a，泛指。