问题描述： 表虚拟语气给我个例句时态退后应该是现在时? 1个回答 分类：英语 2014-12-14 问题解答： 我来补答 If they were here,they would help you.if从句时态后退,主句谓语用“would/could/might/should+动词原型. 展开全文阅读
