After he had turned off the TV set，he began to go over his lessons.（用动词的-ing形式改写）
Having turned off the TV set，he began to go over his lessons.
Having turned off the TV set，he began to go over his lessons.

【答案】Having turned off the TV set，he began to go over his lessons.

【解答】

【点评】

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发布：2024/4/20 14:35:0组卷：4引用：4难度：0.5

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After he had turned off the TV set，he began to go over his lessons.（用动词的-ing形式改写） Having turned off the TV set，he began to go over his lessons.Having turned off the TV set，he began to go over his lessons.