发布网友 发布时间:2022-04-24 17:20
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热心网友 时间:2023-05-09 08:52
有些动词后跟不带to的不定式作宾语补足语,但改为被动结构后要加上“to”。例如:We heard him singing in his room just now.-He was heard to sing in his room just now.刚才听到他在房间中唱歌。need doing something也表示被动