Question

Parents,unfamiliar with the inner workings of an American high school ,are ill-equipped to help

这句中“unfamiliar with the inner workings of an American high school "是什么成分呢？这是哪种从句吗？

Answer 1

Parents, unfamiliar with the inner workings of an American high school ,are ill-equipped to help.

其中的unfamiliar with..... 是主语parents的同位语。

你可以把它看成非限制性定语从句简化后的结果

Parents, who are unfamiliar with the inner workings of an American high school ,are ill-equipped to help.

who 引导非限制性定语从句，省略无意义的be动词之后就变成同位语，其内容是补充说明parents.

The girl, beautiful and intelligent, is my wife.

The girl, who is beautiful and intelligent, is my wife.