were 是句子的谓语,有“是”的意思,were you 后跟的是名词,形容词或动词的ing形式,表示你是……吗? 比如,were you a teacher?(你是个老师吗?); were you happy?(你是高兴的吗?) were you watching that game at that time?(你那会儿是正在看电视吗?) 其回答是,yes, i was、 no,i wasn't
did 是
助动词,没意义。did you 后必须跟动词原形, 表示你做什么了吗。 比如,did you climb the mountain yesterday? (你昨天爬山了吗?)其回答是 yes, i did、 no, i didn't