since none of us know that TOM had gone steady with any young man,the news of her marriage caused us no little surprise.
问题描述：
since none of us know that TOM had gone steady with any young man,the news of her marriage caused us no little surprise.谁能把我分析下这个句子的结构和语法,
答
我们谁都不知道TOM已经和某个年轻人发展得很稳定了,所以听见他结婚的消息我们都大吃一惊