What's difference between うるさくないでください and うるさくしないでください


Don't both of them mean "Please do not be loud"?

What's the うるさく? Is it うるさい and change い into く to make it a noun? Could you
guys suggest the topic that I can look into and study more about them?

Thank you so much.




うるさくしないでください is the only correct choice. うるさくないでください is just plain
ungrammatical because it lacks a verb.

～ないでください ("Please don't ～") of course needs a **verb** before it, and in this
case, the verb is する (in its nai-form, し(ない)). うるさく is the adverbial form (aka
"ku-form") of the i-adjective うるさい. うるさく is **adverbially** modifying する.




うるさくしないでください is the only correct choice. うるさくないでください is just plain
ungrammatical because it lacks a verb.

～ないでください ("Please don't ～") of course needs a **verb** before it, and in this
case, the verb is する (in its nai-form, し(ない)). うるさく is the adverbial form (aka
"ku-form") of the i-adjective うるさい. うるさく is **adverbially** modifying する.

