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have had doing是什么时态
构成完成时态，例： He has left for London.他已去了伦敦。 By the end of last month， they had finished half of their work. 1）have +过去分词，构成完成时态，例： He has left for London.他已去了伦敦。 By the end of last month， they had finished half of their wor
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had doing是什么时态
1）have +过去分词，构成完成时态，例： He has left for London.他已去了伦敦。 By the end of last month， they had finished half of their work. 上月末为止，他们已经完成工作的一半。
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have had doing是什么时态
如：I was doing my homework at 9 oclock p.m.last Sunday.2.表示一动作正在进行时，另一动作同时正在进行。have的用法 一、have作助动词 主要变化形式：have，has，had 动名词/现在分词：...
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had doing是什么时态
过去进行时。表示过去某时正在进行的状态或动作。句式：主语+was/were+动词ing+其他。种类: 1.表示过去某一时间内（正在）进行的动作。如：I was doing my homework at 9 oclock p.m. last Sunday. 2.表示一动作正在进行时，另一动作同时正在进行。
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had doing是什么时态怎么翻译
had doing是过去进行时。表示过去某时正在进行的状态或动作，句式：主语+was/were+动词ing+其他。
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had doing是什么时态
1）have +过去分词，构成完成时态，例： He has left for London.他已去了伦敦。 By the end of last month， they had finished half of their work. 上月末为止，他们已经完成工作的一半。
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had doing是什么时态
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had doing是什么时态
如：I was doing my homework at 9 oclock p.m.last Sunday.2.表示一动作正在进行时，另一动作同时正在进行。have的用法： 一、have作助动词 主要变化形式：have，has，had 动名词/现在分词：...
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had doing是什么时态
如：I was doing my homework at 9 o'clock p.m.last Sunday.2.表示一动作正在进行时，另一动作同时正在进行。have的用法 一、have作助动词 主要变化形式：have，has，had 动名词/现在分词：...
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had doing是什么时态
had doing是什么时态过去进行时。表示过去某时正在进行的状态或动作。句式：主语+was/were+动词ing+其他。种类:1.表示过去某一时间内（正在）进行的动作。如：I was doing my homework at 9 o'...
had doing是什么时态
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