will have done亲，对我的回答满意的话，就给个好评吧。如果还有不清楚的地方，可以跟我继续交流哦。求采(^V^)昨天她一完成作业，她妈妈就叫她练习钢琴She had hardly finished her homework when her mother asked her to practice playing the piano yesterday.这个句子是过去完成时 表示过去的...
will have done亲，对我的回答满意的话，就给个好评吧。如果还有不清楚的地方，可以跟我继续交流哦。求采(^V^)昨天她一完成作业，她妈妈就叫她练习钢琴She had hardly finished her homework when her mother asked her to practice playing the piano yesterday.这个句子是过去完成时 表示过去的...