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题目
being done的问题.
done的用法和过去分词的用法.
参考:1.when completed,the museum will be opened to the public.
2.Put into use in 2000,the hotline was meant for residents reporting water and heating supply breakdowns.

提问时间:2021-01-31

答案
being done:
如果主语是被动做某事,就用be done.
你举的例子就是这种情况.只要根据时态把be 动词变化就可以.

如果主语是被动做某事而且正在做就用being done.
eg.1.the building is being washed by the workers now.
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