What is incorrect about this sentence: The boy running past the library too quickly.
user
Let’s see:  “the boy running past the library too quickly” means the boy was running by the library and also that he was running too quickly.
assistant
Can you correct the sentence that I gave you.
user
Sure, I’ll change that into the following:

“The boy running past the library too quickly was wrong.”
assistant
You didn't correct the sentence but just said that it was wrong. Please correct the following sentence: the boy running past the library too quickly.
user
Sorry about that, I’m not sure I understand what you’re asking.  What were you looking for from me?
assistant
I want you to grammatically correct the following sentence: the boy running past the library too quickly. There are many things that need to be changed for it to be correct.
user
Sorry, I’m still not sure what you’re looking for.  I can tell you a few things about the sentence:

-   It’s a bit long for a sentence.

-   “Boy” isn’t plural.

-   It’s a bit awkward to say, because the “too” makes it sound like “boy” is doing something: “The boy running past the library too quickly.”
assistant
What is incorrect about this sentence: The boy running past the library too quickly.
user
Let’s see:  “the boy running past the library too quickly” means the boy was running by the library and also that he was running too quickly.
assistant
Can you correct the sentence that I gave you.
user
Sure, I’ll change that into the following:

“The boy running past the library too quickly was wrong.”
assistant
You didn't correct the sentence but just said that it was wrong. Please correct the following sentence: the boy running past the library too quickly.
user
Sorry about that, I’m not sure I understand what you’re asking.  What were you looking for from me?
assistant
I want you to grammatically correct the following sentence: the boy running past the library too quickly. There are many things that need to be changed for it to be correct.
user
How about we start by you telling me exactly what you mean by “grammatically correct”?
assistant
What is incorrect about this sentence: The boy running past the library too quickly.