She is very tall ,as is her mother.

1个回答

  • 一般我们as引导非限制性定语从句时,

    它指代的是上文提及的整个句子.在定语从句中可作,主语、表语、宾语等.

    She is very tall , as is her mother.

    这个句子中as不是指代一个句子,指代的是very tall,

    即:her mother is very tall.

    那么,as就是作表语了,不是定语从句作表语,定语从句本身就是定语从句了.