When I walked past his house, I heard him .A. to singB. sang C. singsD. singing
When I walked past his house, I heard him .A. to singB. sang C. singsD. singing
发布时间：2020-08-22 06:08:12
When I walked past his house, I heard him . A. to sing B. sang C. sings D. singing
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A. to sing B. sang C. sings (答案→)D. singing 解析：此题考查固定举行结构hear sb do sth和hear sb doing sth之间的区别，前者表示听到某人经常做某事或做过某事，后者表示听到某人正在做某事。根据语境提供的信息可知我听到他正在唱歌，故选D。