This research aims was to discover the interpersonal function types and to explores their realization within the speech. This research was conducted by using qualitative research design. The data was taken from the website which are readily accessible to the public. After that, the data is divided into clauses form. Next, the data was analyzed based on Halliday’s theory through many steps of data analysis by Cresswell. The results of data analysis showed that Martin Luther King Jr applied: (1) Speech Function (statement, command, and question); Mood (declarative, imperative and interrogative); Modality (high, median, and low); Tense Shift (present, future, and past) and Personal Pronoun (First Personal Pronoun, Second Personal Pronoun and Third Personal Pronoun). (2) speech function (statement was a most dominant, command was the second dominant and question was less); Mood (declarative was most dominant, imperative was the second dominant and interrogative was less); modality (median was most dominant, high was the second, and low was rare); personal pronoun (we was used frequently) and tense shift (present tense was majority, future was a second place, and past tense was less). So based result above, it was concluded that Martin Luther King Jr gave much infomation. Therefore, this speech was called as an informative speech. Considering the result above, the researcher suggested orator use many pronoun “we” when delivering a speech and the university students learn interpersonal function.

The Nias language that records the richness of Nias culture is ke-afo-an. ke-afo-an is a mixture of five entities originating from nature or the environment that are often used as snacks or cigarettes by residents who live in the geographical area of the Nias archipelago. The five main afo-an entities are fino (betel nut), gambe (gambir leaf), becua (lime), tawuo (betel), and bako (tobacco). The aim of this research is to know the Tridimensional Social Praxis in the metaphor of Keafo-an in Central Nias Dialect. This research was designed with a mixed methods research approach (qualitative and quantitative). The result shows the social praxis dimension of the afo-an lexicon influences the Central Nias dialect in Lahusa 1. The biological dimension is shown through the persistence of the actual reference of each lexicon. The ideological dimension refers to the lexicon used in the metaphor for the symbol of reference to the concept referred to in a situation. Finally, the sociological dimension is shown through the use of the afo-an lexicon in delivering a certain concept by speakers and listeners of Central Nias Language in the village of Lahusa 1.

The Nias language that records the cultural richness of Nias is afoness. Ke-afo-an is a mixture of five entities originating from nature or the environment, which are often used as snacks or cigarettes by residents living in the Nias archipelago's geographical area. This research aim isa to know the dominance of the ke-afo-an ecolexicon category. This study was designed with a mixed methods research approach (qualitative and quantitative). Based on the results and discussion above, there are three syntactic categories in the afo-an ecolexicon, and the most dominant category is the noun category, with a lexicon of 42 or 61%. Furthermore, based on environment, the noun lexicon that dominates is the biotic noun lexicon with 26 lexicons or 62% (flora = 23 or 55% and fauna = 3 or 7%). Finally, based on grammatical form, ecolexicon in the form of derivatives dominates with 46 or 67% of lexicons.

The Nias language that records the richness of Nias culture is ke-fo-an. Ke-fo-anis a mixture of five entities originating from nature or the environment that are often used as snacks or cigarettes by residents who live in the geographical area of the Nias archipelago. The five main ke-fo-anentities are fino (betel nut), gambe (gambir leaf), becua (lime), tawuo (betel), and bako (tobacco). The purpose of this study is to describe the syntactic category of the afo-an ecolexicon in the Central Nias Dialect. This research was designed with a mixed methods research approach (qualitative and quantitative). The result shows There are 3 syntactic categories that exist in the afo-an tradition, namely, noun, verb, and adjective categories. Examples of noun categories are the word from madawa 'knife' and the noun phrase cucu wole 'pelocok kinang' which has a syntactic construction, core noun + modifier noun. Furthermore, examples of categories of verbs are such as the original word 'chew' and the phrase mamici 'concealing' which has a syntactic construction, prefix as a modifier element + verb as a core element. Examples of adjective categories are the origins of olombanö 'dizzy' and afoe 'sepat'.