一般过去时was were后加ing么?

was were + doing 是过去进行时

be V. + Ving

===am/are /is/was/were/will be/ shall be/ + Ving ===进行时态

was/werw+V-ing 是过去进行式

所以不用加

有was/were是"I was a student"之类的句子

加，sb/st was/were doing something

过去进行时的构成是was/were+doing