Question

请帮我分析下这个句子，就是它的成分，谢谢

It is significant that the earliest living things that built communities on these island are examples of symbiosis。

Answer 1

that built communities on these island 是个定语从句，是the earliest living things的定语，即翻译为：在这些岛上建立团体的最早生物，the earliest living things 是are examples of symbiosis的主语，即：在这些岛上建立团体的最早生物是共生关系的例子，开头的it是形式主语，在这些岛上建立团体的最早生物是共生关系的例子，这是意义重大的。

Answer 2

It 【主句形式主语】is【系动词】 significant 【表语】that the earliest living things {that built communities on these island }【定语从句】are examples of symbiosis【主句的真正主语，{主语从句}】。

Answer 3

it is significant 是主句，it是形式主语，后面的that 从句是真正主语，从句中the earliest things是主语，后面跟的是定语从句， are examples of symbiosis是谓语。

Answer 4

It 形式主语，真正的主语是that引导的从句
is 主句谓语
significant 表语

that引导的从句中， the earliest living things 是主语，that built communities on these island 是定语从句，are 是从句的谓语，examples of symbiosis是从句的表语