1. Let me know if anything.
2. Let me know if there’s something.
Are both grammatically correct?
Those don't work. They are incomplete. "Let me know if" has to be followed by a complete clause, for example, Let me know if anything changes.
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Those don't work. They are incomplete.
"Let me know if" has to be followed by a complete clause, for example,
Let me know if anything changes.
Let me know if there's something troubling you.
Let me know if there's something wrong with the car.
Let me know if anything happens that I should know about.
CJ