The Korean government introduced the resettlement refugee system as a pilot project in 2015. So far, seven refugee groups who are mainly from Myanmar have resettled in Korea. As the other immigrants commonly face, language is the biggest obstacle to their adaptation to Korean society. Some could learn fast, but some couldnot. Some of them still find it difficult to speak even basic expressions after several years of struggling. This study aims to figure out what factors caused this gap between faster learners and slower learners and explores the consequences of the gap. It seeks how they can live independently in Korea without other’s help. How can these refugees overcome the language barrier? Notably, the resettlement refugees have been accumulated stress to adjust to their living in the entirely new society because they have already experienced it in former countries, where they settled first after they left their homeland. They had to learn new languages wherever they moved. Moreover, Myanmar is a county full of diversities. Although their official language is Burmese, these refugees use their ethnic languages at home. The participants of this study are eight families whom the Korean government invited as resettlement refugees. They belong to the fourth group, which is the group firstly resettled in Gimpo city while the former three groups resettled in the other places. The researcher adopted ethnography as a research method and analyzed it based on participant observation over two years as one of the family mentors. Also, one by one of each family, eight resettlement refugees were interviewed. This research includes both children and adults, but the interviews were conducted only with adult refugees. Based on Stephen Krashen’s theory about foreign language learning, the central hypothesis of this study is that the more language acquisition they can acquire, not learning through books, the faster their language ability improves. As a result of this study, it was found that the participants who had less progressed language acquisition having a lack of interaction with Korean people were likely slower learners. For example, among the participants, children than adults and women than men learned Korean faster, for they had more opportunities to interact with more Korean people. Meanwhile, slower learners tended to depend on faster learners who mostly were their children or wives, even though none of them wanted. Slower learners got discouragement many times, but they did not give up. Instead, they tried not to rely on others because asking for help always made them uncomfortable. For faster learners could not help slower learners all the time, asking and giving help caused conflict occasionally. The Korean government set a goal to integrate these resettlement refugees smoothly into its society. However, it seems not easy for them to overcome the language barrier unless they have someone to interact with them to practice the language. What they need are friends.