How do native English speakers say "how could you have done that"?

Native speakers reduce "how could you have done that" to "how coojoo've done that" (/haʊ kʊd͡ʒəv dʌn ðæt/) in natural speech. Expresses surprise, disbelief, or strong disapproval about someone's action, questioning the possibility or justification of it.

how could you have done that → how coojoo've done that

Q: What is the connected speech form of "how could you have done that"?

"how could you have done that" becomes "how coojoo've done that" — a assimilation pattern. In fast speech, 'could you' often becomes 'coojoo' due to the /d/ sound blending with /j/ to make a /dʒ/ sound. Also, 'have' is reduced to 'uv' or 'əv', and sometimes 'h' in 'have' is dropped.

how could you have done that → how coojoo've done that /haʊ kʊd͡ʒəv dʌn ðæt/ Assimilation

Expresses surprise, disbelief, or strong disapproval about someone's action, questioning the possibility or justification of it.

In fast speech, 'could you' often becomes 'coojoo' due to the /d/ sound blending with /j/ to make a /dʒ/ sound. Also, 'have' is reduced to 'uv' or 'əv', and sometimes 'h' in 'have' is dropped.

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STANDARD FORM → REDUCED FORM

how could you have done that → how coojoo've done that

/haʊ kʊd͡ʒəv dʌn ðæt/

Expresses surprise, disbelief, or strong disapproval about someone's action, questioning the possibility or justification of it.

In fast speech, 'could you' often becomes 'coojoo' due to the /d/ sound blending with /j/ to make a /dʒ/ sound. Also, 'have' is reduced to 'uv' or 'əv', and sometimes 'h' in 'have' is dropped.

Step 3 · Context

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Example 1

I can't believe it, how could you have done that to me?

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Example 2

Seriously, after all we've been through, how could you have done that?

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Example 3

When I found out, my first thought was, 'How could you have done that?'

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Example 4

I just saw the bill! How coojoo've done that?

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Example 5

After all my warnings, how coojoo've done that?

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how could you have done that → how coojoo've done that