听美语时怎样分辨 是were还是weren't说得快的时候听起来好像是一样的,因为听不到尾音那怎么区别呢

听美语时怎样分辨 是were还是weren't说得快的时候听起来好像是一样的,因为听不到尾音那怎么区别呢 是were doing 还是were did 怎么分辨was和were a big family were crowded in a small house.为什么用were?怎样分辨何时用单数?何时用复数 问下,听说是现在英语中was、were都统用were了?是这个仅仅用于虚拟语气中,还是所有的日常对话中? were were是过去式,还是was是过去式 you后面是用was还是were? 是 i was 还是 i were 怎样分辨物质是酸性还是碱性 I + were还是was? 是How was the people还是How were the people回答是they were unfriendly. be的过去式是was还是were还是been急 was 和were的用法?you后面是用was还是were? If I were you.这个句型对么.是were还是was或是am 是we were looking forward to coming china还是 we were looking forward to coming china? were后动词是否要用ing:是they were have还是having? Were there enough good news in today's newspaper?是was 还是were