until 用法整体来说有两种 1.与非延续性东西连用例如finish,buy,leave,等等,常和否定句构成not...until句式,翻译时候,不要翻译没有,还按照肯定句翻译,如：he didn't finish his homework until his mother came back.直到他妈妈回家,他才写完作业 2.与延续性动词连用（常见动词均为延续性的）,直接翻译直到 I played games until he came back.直到他回来,我一直都在玩游戏.（随后就不玩了）
