she was heard singing song just now如果有确定的时间,如yesterday morning 是用heard to sing 还是heard singing
问题描述：
she was heard singing song just now
如果有确定的时间,如yesterday morning 是用heard to sing 还是heard singing
答
我觉得应该是用
she has heard singing just now
或
she has heard someone singing a song just now
至于yesterday morning
还是应该用heard singing