1.The car damaged in the accident can't be used unless ___ completely .repaired 我知道这里表示被动,所以用过去分词.而且我觉得unless后面省略了主语和谓语,这里是否 = it was repaired 还是 it is repaired .还是我的

1.The car damaged in the accident can't be used unless ___ completely .repaired 我知道这里表示被动,所以用过去分词.而且我觉得unless后面省略了主语和谓语,这里是否 = it was repaired 还是 it is repaired .还是我的
1.The car damaged in the accident can't be used unless ___ completely .
repaired 我知道这里表示被动,所以用过去分词.而且我觉得unless后面省略了主语和谓语,这里是否 = it was repaired 还是 it is repaired .还是我的理解有误?
2.This is one of the means ___ the electricity energy is conducted from one place to another .正解是 by which .能否帮我分析下这里为什么用 by which 而不是 that \ which .
3.“ Put that money somewhere safe ___ it gets stolen ." Mom reminded me .正解是 before .句意该如何理解?“在被偷之前” 觉得不合适 但却不知道怎么理解好.
感激不尽.

1.The car damaged in the accident can't be used unless ___ completely .repaired 我知道这里表示被动,所以用过去分词.而且我觉得unless后面省略了主语和谓语,这里是否 = it was repaired 还是 it is repaired .还是我的
1,你的理解没错误.这里 = it was repaired
2,BY有通过什么途径的意思.所以此处用BY
3钱被盗前放到安全的地方.妈妈提醒我

1. repaired 前应是省了it is ，因为be used 前用了can't 而没用couldn't 。
2. 可曾记得by the means...（意为：通过某某方式）这个表达？which指代means，故前面应加上by。
3. 完全可以理解为“再被偷之前” 。另外，可曾见过这样的句子“The naughty boy run away before I could se...

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1. repaired 前应是省了it is ，因为be used 前用了can't 而没用couldn't 。
2. 可曾记得by the means...（意为：通过某某方式）这个表达？which指代means，故前面应加上by。
3. 完全可以理解为“再被偷之前” 。另外，可曾见过这样的句子“The naughty boy run away before I could see his face clearly” ？此处可理解为“我 还没来得及 看清他的脸，那淘气的小家伙便跑开了” 。体会一下这两者的异同...

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