In Korean grammar, the Past Perfect tense is used to express actions or situations that were completed before another past action or event. It is formed by adding -았/었- (depending on the verb stem’s final vowel) to the verb stem and then followed by -던. This tense helps to describe a sequence of events or to emphasize the contrast between past actions. The following exercises will help you practice the use of Past Perfect tense in Korean sentences by filling in the blanks with the correct verb forms. Good luck!