完成进行时怎么理解-现在完成进行时的例句50个-现在完成进行时怎么回答
现在完成进行时的谓语动词构成 I/ we/ you/ they have been working he/ she/ it has been working （一）表示从过去某时开始一直持续到现在的动作，并且还将持续下去。 The Chinese have been making paper f...
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现在完成进行时的谓语动词构成 I/ we/ you/ they have been working he/ she/ it has been working （一）表示从过去某时开始一直持续到现在的动作，并且还将持续下去。 The Chinese have been making paper f...