摘要：This research is aimed at finding and describing the effect of teacher’s code-switching on vocabulary acquisition of senior high students: EFL Learners the eleven grade students at MAN 2 LEBAK in the academic year of 2020/2021. This research was conducted from January to February 2021. This research was classified as a pre-experimental study. It involved 25 students from one class. The pre-test was given to the participants before the treatment and the post-test was given after the treatment. The data of the pre-test and post- test of the participants were analyzed by using descriptive and inferential statistics. After the data were tested and found the hypothesis (H 1 ) was accepted and the null hypothesis (H 0 ) was rejected. The result of the research shows that the difference in the mean score between the students’ score pre-test and post-test. the score was 7,2, which obtained in the degree of freedom (df) of 23, with the degree of significance 5%, it gained score 1,71387. Which means the t-observation was higher than t-table. It showed that teacher’s code-switching on Students’ vocabulary acquisition is effective.
关键词：code switching EFL learners vocabulary
其他关键词：Code-Switching; The Effect of Teacher’s Code-Switching; Vocabulary
