Although the teaching of Turkish as a second language and as a foreign language shows similarities in many areas, there is a major difference between them. The social contexts and cultural dimension of the language come to the fore if it is learned as a second language; because, the language is learnt in that culture as a second language. Thus, the people who have a second language are more advantageous than the other who learns the same one as foreign language. In this study, it is aimed to identify and classify the language usage of 10 foreign undergraduate students in ÇOMÜ. The study was designed as a case study. Data of the study is obtained from semi-structured interviews conducted with advanced foreign students and diaries that were kept for 30 days of their lives. In the study, 1165 expressions were reflected into the diaries of advanced foreign students. According to the analyses conducted by three experts in the area, the most difficult expressions that give difficulties to the students are idioms (f= 458), allusion (f = 288), metonymy (f = 166) and double-entendre (f=105). Apart from these, students have faced some figures of speech in the daily life such as hyperbole, simile, metaphor, identification, kind assumption, proverbs, repetition, inquiry, interjection, symmetry, open metaphor, amphibology and riddles. This case has suggested that the literary language should be also used along with idioms, proverbs and expressions in the teaching of the second language. In the interviews conducted, it has been indicated that the language of Turkish is rich in terms of the idioms and the advance foreign students always face these idioms, they are frequently surprised by the sarcastic use of the language and sometimes ridiculed by the misunderstandings and they also stated that Turkish has a high expression of power.

Anahtar Kelimeler
Teaching Turkish as a second language, linguistic performances, culture, figures of speech.