过去进行时的所有句型及用法快

问题描述:

过去进行时的所有句型及用法

肯定句:Somebody was/were doing something.
否定句 somebody was/were not doing something
一般疑问句 wasn't/weren't somebody doing something
特殊疑问句 特殊疑问词+was/were somebody doing?