Bats are surprisingly long-lived creatures,some having a life span of around 20 years.
问题描述：
Bats are surprisingly long-lived creatures,some having a life span of around 20 years.
请问,其中的状语some having a life span of around 20 years中,some是什么成分.
答
Bats are surprisingly long-lived creatures,【some having a life span of around 20 years独立主格结构】.=Bats are surprisingly long-lived creatures,【with some having a life span of around 20 years介词w...