was、were与did用法的区别

was、were与did用法的区别 was/were did -ed 的用法区分 求英语高手帮忙告诉下did和was/were的用法区别? 英语翻译were与did用法有什么区别? was were的用法 was、were的用法和与is、am、are的区别 Is/Are supposed to do 与Was/Were supposed to do 的区别是什么?具体用法? as it were和as it was的用法区别 how were you 与how did you 的区别 were 和 was 的用法. was 和were的用法? was和were的用法