来自陈东彬的问题
【现在完成进行时的被动语态结构是havebeen+过去分词还是havebeen+doing例如:Theyhavebeencollectingsomestampssince2000Somestampshavebeencollectedbythemsince2000】
现在完成进行时的被动语态结构是havebeen+过去分词还是havebeen+doing
例如:Theyhavebeencollectingsomestampssince2000
Somestampshavebeencollectedbythemsince2000
3回答
2020-12-23 15:05