— Is Eric in the next room?—Well，it’s hard to say. But I Wap版

试题详情及答案解析

— Is Eric in the next room?
—Well，it’s hard to say. But I heard him _____loudly when I passed by just now.

A．sing

B．to sing

C．sang

D．singing

答案：D

试题分析：句意：--艾瑞克在隔壁房间吗？--哦，很难说，但是刚才我经过时我听到他在唱歌。hear sb do sth 听到某人做某事.暗示过程完成.hear sb doing sth 听到某人正在做某事.强调动作的进行.可能你听到的只是动作的一部分..结合句意，故选D
考点：考查非谓语动词的用法。