Notice that speaker A asks what time B will come to the library. Speaker B’s reply with (으)ㄹ게요 conveys a sense of promise or reassuring of “arriving at the library by 9 a.m.” for speaker A’s sake.
Notice that speaker A asks what time B will come to the library. Speaker B’s reply with (으)ㄹ게요 conveys a sense of promise or reassuring of “arriving at the library by 9 a.m.” for speaker A’s sake.