I've read a sentence before which contains "would be done" but with different meaning:
The whole Harry Potter saga was kicked off because of a prophecy that Voldemort would bedone in by a newborn wizarding infant.
Here "would be done" refers to "would be defeated."
Context:
If everyone reading this donated ¥50 yuán, our fundraiser would be done within an hour. But not everyone can or will donate. And that's fine. Each year just enough people decide to give.
Top answer
The first idiom is: would be done in . To do someone in is to kill them, or defeat them. The second is not an idiom.
— AlpheccaStars
The first idiom is: would be done in .
To do someone in is to kill them, or defeat them.
The second is not an idiom.
done = finished.
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