问题描述:
present perfect progressive 现在完成进行 和present perfect 有什么区别
present perfect 加has/have+past participle 而present perfect progressive has/have+been+verb+ing
participle 过去分词
present perfect 加has/have+past participle 而present perfect progressive has/have+been+verb+ing
participle 过去分词
问题解答:
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