题目内容：

求英语,加翻译 I herad someone play the piano in the music room an hour ago.(改被动)

优质解答

翻译：“一小时前,我听到有人在音乐教室里弹钢琴.”被动形式：Someone was heard to play the piano (by me) in the music room an hour ago. 要注意：hear sb. do sth. 改为被动形式时,要补充个不定式符号：“to”.
希望可以帮助你!