안녕하세요
I need help with translation of these phrases (if they are grammatically correct)
1. 했을 리가 없었다 - There was no way that... (?)
2. 할 리가 없을 것이다 - There will be no way that (?)
3. 했을 리가 없을 것이다 - I don't know how to translate that, but i think it can be used (there will be no way something happened in the past?)

Question

Answer

When attached to a past-tense verb, "-(으)ㄹ 것이다" expresses a guess or inference about a past event rather than the future.
So 했을 리가 없을 것이다 means  하지 않았을 거라고 추측된다 in this situation.
If you have more question about it, feel free to ask me again.

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