antarctica is about 600 miles from the tip of South America 中 from the tip of South America 此介宾短语做什么成分
问题描述：
antarctica is about 600 miles from the tip of South America 中 from the tip of South America 此介宾短语做什么成分
答
from the tip of South America 介词短语做地点状语,从南美洲顶端(这个地点)算起