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Seeing the case that occurs in SMK N 2 Depok Sleman, the researcher felt that the implementation of code switching in English classes might also beneficial
for students of SMK N 2 Depok Sleman grade eleven since some classes of grade eleven have problems in certain materials. A number of researchers Lai, 1996;
Cole, 1998; Critchley, 1999; Schweers, 1999; Burden, 2001; Tang, 2002; Greggio Gil, 2007 have argued that code switching can be a useful tool in assisting
English language teaching and learning process. Skiba 1997 sees an opportunity for language development because code switching allows the effective transfer of
information from the senders to the receivers. Though the development is minimal and slow, it is still a positive indication of the learning progress. Tien and Liu
2006 state that low proficiency students considered code-switching in their EFL classes as helpful towards gaining better comprehension especially when
providing equivalent comprehension as well as giving classroom procedures.
B. Research Problems
This study addresses three research problems: 1.
What are the types of code switching used by the English teacher to teach the eleventh grade students of SMK N 2 Depok Sleman?
2. What are the functions of code switching used by the English teacher of SMK
N 2 Depok Sleman ?
3. How can code switching be effective for language learning in SMK N 2
Depok Sleman ?
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C. Problem Limitation
In this research, the researcher will focus on the types and functions of code switching used by the English teacher of SMK N 2 Depok Sleman when
teaching the students in the classroom. The researcher will analyze the types of code switching that appear based on Poplack’s theory. Meanwhile, the functions
of code switching will be analyzed using Mattson and Burenhult ’s theory. The
researcher will also find out whether or not code switching is effective to support English language learning.
D. Research Objectives
The purposes of the study on code switching used by the English Teacher of SMK N 2 Depok Sleman are:
1. To describe types of code switching used by the English teacher to teach
the eleventh grade students of SMK N 2 Depok Sleman. 2.
To describe functions of code switching used by the English teacher of SMK N 2 Depok Sleman.
3. To describe how code switching can be effective to support English
language learning in SMK N 2 Depok Sleman.
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E. Research Benefits
From this study, the researcher provides some benefits: 1.
For the students The implementation of code switching in English lesson can ease students
to understand some phrases, words, or sentences that are not familiar for students. Thus, it will make students learn English better.
2. For the English teachers
The findings of this study later can become the reflection for the teachers whether they have implemented code switching or not to teach their
students. 3.
For the next researchers The next researchers can investigate all English teachers of SMK N 2
Depok Sleman from grade ten to twelve as the subject of the study.
F. Definition of Terms
