问题描述: it is over a year since i met him 为什么要用since since前不是要用完成时吗? 1个回答 分类:英语 2014-11-25 问题解答: 我来补答 请看下面这句话,就可解决你的疑惑:It is若干时间since...比It has been若干时间since...普通得多,如通常说It is a year since he returned,很少说It has been a year since he returned.——葛传槼编著、上海译文2002《英语惯用法词典》 展开全文阅读