"슬프다(descriptive verb, adjective in Korean)" conjugated like.... 1. The past tense 슬펐습니다 <= 슬ㅍ + 었(the past suffix) + 습니다 2. The present tense 슬픕니다 <= 슬ㅍ + ㅂ니다 3. The future tense 슬플 것입니다 <= 슬ㅍ + ㄹ 것입니다 The formal sentences end with "-ㅂ니다" or "습니다". \^o^/