Her mother often hears her play the violin.(改为被动语态)
She is often heard to play the violin.
【be heard to do sth】表示被听到
要用不定式
被动语态的结构是【助动词+谓语动词+宾语】
Her mother often hears her play the violin.(改为被动语态)
She is often heard to play the violin.
【be heard to do sth】表示被听到
要用不定式
被动语态的结构是【助动词+谓语动词+宾语】