英语中“过去进行时”的句子结构 肯定句、否定句、疑问句,三种结构都要!

如题所述

肯定句 somebody was/were doing soeshing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?
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