问题描述： we have worked there since the factory opened.为什么不是had 1个回答 分类：英语 2014-11-01 问题解答： 我来补答 过去持续到现在,与现在还有关的,用现在完成时.与现在没关联,又是过去做的,用过去完成时.如果我现在不在那间工厂工作（与我现在无关）,就用had.we had worked there since the factory opened,but now I works in another factory. 展开全文阅读
