dimension   of  speech  act  performance  and   is  related   to  the  ability  to   express  a variety of communicative function.
In   the   English   as   Foreign   Language   EFL   context,   Interlanguage pragmatics   is   a   study   that   investigates   EFL   learners’   knowledge,   perception,
comprehension  and acquisition  of pragmatic of second languages Alcon, 2008 cited in Baron and Maria, 2010: 39. Moreover, interlanguage pragmatic is used to
investigate the ability of EFL learners in understanding and performing action in target   language   that   in   this   research   is   English   language.   In   this   research,   the
research employ interlanguage pragmatics in order to analyze how EFL learners from   Javanese,   Madurese   and   Using   tribes,   whose   language   background   and
culture are different from the target language, use their ability in performing target language   pragmatics,   especially   gratitude   expression   and   the   acquisition   of
linguistic action pattern in the second language.
2.3 Expressing Gratitude
Gratitude expression is always related to daily social life. Its aim is to make and maintain good relationship with others, especially after someone is helped by
others.   As   cited   on   Cheng   2005:   12,  Leech   1983   describes   thanking   from social perspective as “a friendly function, and its goal of stating appreciation is to
establish and maintain a polite and friendly social atmosphere.” Gratitude begins with   an   inner   feeling.   The   feeling   of   love  and   tenderness   will   grow   if   we  are
grateful   for   all   the   good   things   happening   around   us,   especially   when   we   are united
with our
dear one
http:education.byu.eduyoucandothisexpressing_gratitude.html , accessed on 06
March, 2014 . There are several reasons of why expressing gratitude or saying
thank you is important based on the etiquette advantage: 1
Saying thank you acknowledges our dependence on others. 2
It is important to recognize the time it took, especially because we are a time deprived society.
3 If we do not express gratitude, our relationship  might change because we
show that we do not care about the other person. 4
By undermining the code of conduct, we belittle the worth of others. What we are saying is: I do not have to thank you because you mean nothing to
me. 5
It   is   contagious.   If   you   do   something   nice   for   someone,   they   will   do something nice for someone else.
6 If we start chipping away at gratitude and common courtesy, life becomes
very unpleasant. http:etiquetteadvantage.caresourcesgratitude
,   accessed   on   06   March 2014
Gratitude expression in pragmatics study belongs to speech acts. Austin 1962: 94-107 defines speech act as the action of saying something. Speech act is
divided   into   three   groups—locutionary,   illocutionary,   and   perlocutionary. Expressing gratitude belongs to illocutionary act. Illocutionary acts are acts done
in   speaking,   including   and   especially   that   sort   of   act for   using   a   performative
sentence such as christening, marrying and so on Austin, cited in Laurence and
Ward, 2006: 54
Gratitude expression is appreciation for all kinds of big and small favors, gifts, and compliments in various situations such as when exchanging goods, at
parties, etc. Most of the expressions of gratitude involve the word  thank, as in many thanks, thank you, thank you very much, thanks, thanks a lot.  Eisenstein
Bodman in Kasper  Bulm-Kulka 1993: 64 said that usually native speakers and second   language   learners   are   unaware   with   the   complex   rules   of   significant
differences in its cross cultural realization. It also happens in the expression of gratitude because they assume that expression of gratitude is universal. Eisenstein
and Bodman 1986 conducted an experiment on gratitude expression on native speakers of American English whose language background is different. They gave
questions that are applied in several conditions. The research shows that thanking appears  as a  universal function.   Because  of the universality  of  using thanking,
every place has different way in thanking. As a result, every EFL learner who has different language background has different way in expressing gratitude. It will
affect   them   in   performing   gratitude   expression   in   target   language   in   certain situation.
2.4 Cheng’s Taxonomy