Having been used for a long time,the computer needs repairing.1 H_英语解答

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

人气：283 ℃　时间：2020-09-17 15:32:22

解答

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）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？不定式表“去做，未作”........ 还没用就需要修了？啥电脑......