如 At 7 o"clock YESTERDAY evening i heard him _____ (唱歌） in the next room 此題答案為什么是
如 At 7 o"clock YESTERDAY evening i heard him _____ (唱歌） in the next room 此題答案為什么是
singing 如果是過去進行時的話那不應(yīng)該是 was singing
singing 如果是過去進行時的話那不應(yīng)該是 was singing
其他人氣：631 ℃時間：2019-10-26 11:45:38
優(yōu)質(zhì)解答
hear sb doing 固定用法,聽到某人正在做某事,就不用加was了~
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