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1主语+was/weredoingwhen...2主语+was/wereabouttodowhen...3主语+had/hadn'tdoneforsometime各举一个例子吧
1主语+was/weredoingwhen...2主语+was/wereabouttodowhen...3主语+had/hadn'tdoneforsometime
各举一个例子吧
1.主语+was/weredoingwhen...（过去）.发生时主语正在做某事Iwasdoingmyhomeworkwhenshewalkedin.她进来的时候我正在做作业.2.主语+was/wereabouttodowhen...（过去).发生时主语将要做某事Iwas...
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