was、were与did用法的区别was/were/did在句子中使用是有什么区别?

was、were与did用法的区别was/were/did在句子中使用是有什么区别? was'were和did的用法 求英语高手帮忙告诉下did和was/were的用法区别?如上 经常在做题中弄错 was、were的用法和与is、am、are的区别 was和were的用法 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 was的用法.were的用法 was&were怎麼个用法. were和was的区别 were和was的区别 were did was 各在什么地方用?有什么区别?它们的结构各是什么? did和was/were+done都表示一般过去式,二者的区别是什么? was/were going to was/were to was/were about to 的区别 was made与has been made的区别及用法 英语翻译were与did用法有什么区别? Had has were was的区别 had和was,were的区别是设么?