shindansuru no de wa naku, hannou o kakuninsuru.

direct object particle

Breakdown of shindansuru no de wa naku, hannou o kakuninsuru.

• 確認かくにんする: to check
• 診断しんだんする: to diagnose

Questions & Answers about shindansuru no de wa naku, hannou o kakuninsuru.

What does 〜のではなく mean here?

It means not doing A, but doing B or rather than A, B.

So in this sentence:

• 診断するのではなく = not to diagnose / rather than diagnosing
• 反応を確認する = check the response

Together, the sentence contrasts two actions:

• don’t diagnose
• instead, check the response

This pattern is very common when Japanese wants to replace one action or interpretation with another.

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Why is there a の after 診断する?

The の turns the verb phrase 診断する into something noun-like, so it can be followed by ではなく.

You can think of it like this:

• 診断する = to diagnose / diagnose
• 診断するの = the act of diagnosing or diagnosing
• 診断するのではなく = not diagnosing / rather than diagnosing

This の is often called a nominalizer.

A rough literal breakdown is:

• 診断する = diagnose
• の = the act of / the thing of
• ではなく = is not / not being, and...

So the structure is not random; the の is what makes the contrast grammar work naturally.

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