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短暂型动词与持续型动词

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His grandfather has been ill for two months.(同意句转换) His grandfather ____ ___ two months ago 持续性动词或短语能用在表过去的某一时间点中么?
短暂型动词与持续型动词
解题思路: 见过程
解题过程:
His grandfather has been ill for two months.(同意句转换)
His grandfather _was___ _ill__ two months ago
持续性动词或短语能用在表过去的某一时间点中。
最终答案:略