摘要：2．表示原因.相当于一个原因状语从句. Not knowing his address, I can't send this book to him. 因为不知道他的地址.我不能把这本书送给他.(= As I don't know his address...) Being ill, he didn't go to school yesterday. 由于生病.他昨天没有上学.(= Since he was ill...)

网址：http://m.1010jiajiao.com/timu_id_3566462[举报]