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Having been used for a long time,the computer needs repairin

来源：学生作业帮 编辑：搜搜做题作业网作业帮 分类：英语作业 时间：2024/06/25 02:46:26
Having been used for a long time,the computer needs repairing.
1 Having been used for a long time,the computer
needs repairing.
2 To have been used for a long time,the computer
needs repairing.
3 Used for a long time,the computer
needs repairing.
三个哪个是对的?why
Having been used for a long time,the computer needs repairin
第一个,原因两点：1 被动 2明显的完成意,对现在造成影响（看后边）
再问： 2不也是不定式的被动完成式么？为什么这里只能用现在分词的被动完成式？
再答： 不定式表“去做，未作”........ 还没用就需要修了？啥电脑......
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