“How could you do/done/have done this?”
What’s the difference between them? I might be mistaken and the middle one doesn’t even exist. I’m not really sure, so just asking.
pen mango 447 I might be mistaken and the middle one doesn’t even exist. Exactly. The middle one doesn't exist.
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pen mango 447I might be mistaken and the middle one doesn’t even exist.
Exactly. The middle one doesn't exist.
pen mango 447How could you [do/have done] this? ... difference ...?
'could do' relates to present or future time.
'could have done' relates to past time.
CJ