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I picked up the money that was on the ground. If I didn’t pick it up, he would.

I picked up the money that was on the ground. If I hadn’t picked it up, he would have.


Do they mean the same and if not, what’s the difference between them? Thank you.

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anonymousI picked up the money that was on the ground. If I hadn’t picked it up, he would have.

Only the above version is correct.

CB

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anonymousthe money that was on the ground

In your mini-narrative the money has already been retrieved from its position on the ground, so it's too late to say that if you didn't pick it up, he would (pick it up).

If instead you were talking about an imagined situation where the two of you might come across some money on the ground some day, and you were speculating about who would pick it up, you could use this first sentence. If I didn't pick it up, he would. This is a hypothetical future and a hypothetical result.

If I hadn’t picked it up, he would have is the correct sentence for the situation you described. Unlike the first sentence, this one looks back on what happened.

CJ

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Comments  

Agree. Only 2 is correct.


It's an issue.with 2nd conditional and negation.

https://www.englisch-hilfen.de/en/exercises/if_clauses/type_2_negation.htmtinal negation.

BUT:

"I knew that if I didn't (do it), he would."

nel0506

Agree. Only 2 is correct.


It's an issue.with 2nd conditional and negation.

link negation.

BUT:

"I knew that if I didn't (do it), he would."

If "I knew that if I didn't (do it), he would." is correct, why is my first sentence not correct?

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It's a good question.

The modal "would" is used in many ways! The problem is that in the first example there is hypothetical prediction (but not a hypothetical conditional).

(see #2 at this link

https://www.grammar.cl/english/would.htm )

[The other example combines use of a conditional and modal 'would' as a judgement!]

nel0506

It's a good question.

The modal "would" is used in many ways! The problem is that in the first example there is hypothetical prediction (but not a hypothetical conditional).

(see #2 at this link

link )

[The other example combines use of a conditional and modal 'would' as a judgement!]

The first one is basically the past of "If I don't pick up the money, he will.".

nel0506

It's a good question.

The modal "would" is used in many ways! The problem is that in the first example there is hypothetical prediction (but not a hypothetical conditional).

(see #2 at this link

https://www.grammar.cl/english/would.htm )

[The other example combines use of a conditional and modal 'would' as a judgement!]

Both sentences are correct. https://www.englishforums.com/English/AreTheseSentencesCorrect/bnqvrm/post.htm

Students: We have free audio pronunciation exercises.

Sentence D below from your link shows the idea, however, if someone intends to fix Example 1, but that's not our question.

We have two unconnected sentences in Example 1 and no repetition or linking back for reference. It's clearly ambiguous and awkward. The context makes the issue. (We don't even know what the purpose of the question is. If someone wants help to edit, that's another issue.)

Compare:

"If I didn't pick it up, he would."

D: I took the loan because if I didn't take it, Jack would take it


Good suggested edit though.

 CalifJim's reply was promoted to an answer.