20 involves ways of thinking about discourse and ways treating of discourse as data.
Advertisement is one of discourses. As cited by Wood  Rolf 2000:  3-4, Potter 1997 explained discourse
analysis in general. [Discourse analysis] has an analytic commitment to studying discourse as
texts and talk in social practices . That is, the focus not on language as an
abstract  entity  such  as  a  lexicon  and  set  of  grammatical  rules  in linguistics … p.146.
Based  on  the  theory,  it  can  be  concluded  that  language  is  not  merely  as communication  mean.  Moreover,  language  has  a  function  as  social  practices.  It
means language become a discourse as data. Discourse  analysis  has  recently  been  established  as  a  new  discipline,
which draws from many different disciplines linguistics, sociology, psychology, cultural  worlds,  and  so  forth.  From  the  linguistics,  advertisement  as  one  of
discourses  cannot  be  separated  from  the  language  use.  From  the  sociology, advertisement  is  to  create  a  certain  action  and  the  communicative  competence
among  individuals.  From  the  psychology,  advertisement  aims  to  influence  the motivation and behaviour of the society. Meanwhile, the cultural worlds can show
how the culture has been developing.
b. Speech Acts
Communication is not just a matter of language use. The speakers need to perform  or  act  to  say  everything.  As  cited  by  Cutting  2002:  16,  Austin 1962
defined  speech  act  as  the  actions  performed  in  saying  theory.  Speech  act  theory also said that the action performed can be analyzed on three different levels when
an utterance is produced. They are locutionary, illocutionary, and perlocutionary
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21 act. The locutionary act is analysis of the words which the speakers say or the act
of saying something. The illocutionary act is  what is done in uttering the words, the function of the words, the specific purpose which the speakers have in mind.
For  example,  the  speech  acts  promising,  inviting,  advising,  ordering,  excusing, and  apologizing.  The  last  is  the  effect  on  the  receiver,  the  receiver
‟s reaction or what is done by uttering the words. Moreover, performative hypothesis said that
every utterance has a performative verb, such as to order, to warn, to admit and to promise. It makes the illocutionary force explicit.
As cited by Cutting  2002:  16-17, Searle 1976 has  also classified the speech  act  in  the  following  macro-class.  They  are  declarations,  representatives,
commissives,  directives,  and  expressives.  Declarations  are  acts  that  change  the world  by  their  very  utterance,  such  as  I  bet,  I  declare,  I  resign,  I  baptize.
Representatives are acts in which the words state what the speaker believes to the case,  such  as  describing,  claiming,  hypothesizing,  insisting,  and  predicting.
Commissives include acts in which the words commit the speaker to future action, such  as  promising,  offering,  threatening,  refusing,  vowing  and  volunteering.
Directives  aim  at  making  the  receiver  do  something,  such  as  commanding, requesting,  inviting,  forbidding,  suggesting,  and  so  on.  Expressives  are  acts  in
which  the  words  state  what  the  speaker  feels,  such  as  apologizing,  praising, congratulating, deploring, and regretting.
Moreover, Sealer 1974: 18 says that The  speech  act  or  acts  performed  in  the  utterance  of  a  sentence  are  in
general  a  function  of  the  meaning  of  the  sentence.  The  meaning  of  a sentence  does  not  in  all  cases  uniquely  determine  what  speech  act  is
performed in a  given utterance of that sentence,  for  a speaker may  mean
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22 more than what he actually says, but it is always in principle possible for
him to say exactly what he means.
It means that the receiver can catch the meaning based on the speaker‟s speech acts performed. Therefore, the researcher will analyze the speech acts.
c. Text and Context