问题描述: It's the third time that I_____(explain)the problem to you 1个回答 分类:英语 2014-10-26 问题解答: 我来补答 这是固定句型结构中的时态搭配——【某人第几次做某事】It /That/This 【is 】the...time that sb 【have done sth】It /That/This【was】the...time that sb 【had done sth】填【have explained】 展开全文阅读