tongue and so on.”
20
Based  on  the  statements  above,  error  can  appear  due  to  the insufficient knowledge or the inappropriate rule about the language being learned;
while  mistake  happens  because  of  the  learner  forget  about  the  rule  or  their carelessness when do the work.
According to understanding above, it can be distinguished between mistakes and  errors.  Mistakes  happen  when  writing  or  speaking  because  of  the  lack  of
attention,  fatigue,  carelessness,  or  some  other  aspects  of  performance.  Mistakes can  be  self-corrected  when  attention  is  called,  whereas,  error  is  the  use  of
linguistic item in a way that a fluent or native speaker of the language regards it as showing  faulty  or  incomplete  learning.  In  other  words,  it  occurs  because  the
learner does not know what is correct, and thus it cannot be self-corrected. There  are two ways to  distinguish  between  an error and a mistake.  The first
one is to check the consistency of learner’s performance. If he sometimes uses the correct form and sometimes the wrong one, it is a mistake. However, if he always
uses  it  incorrectly,  it  is  then  an  error.  The  second  way  is  to  ask  learner  to  try  to correct his own deviant utterance. Where he is unable to, the deviations are errors;
where he is successful, they are mistakes.
21
e. Types of Error
According  to  Dulay  in  the  book  Language  two,  he  classifies  error  into  four types;  error based in  linguistic category,  surface strategy taxonomy,  comparative
taxonomy, and communicative effect taxonomy.
22
1 Error based on linguistic category
Linguistic category  classifies errors according to  either or both  the language component  and  the  particular  linguistic  constituent  the  error  affects.  Language
components  include  phonology  pronunciation,  syntax  and  morphology grammar,  semantic  and  lexicon  meaning  and  vocabulary,  discourse  style.
20
Peter  Hubbard,  et  al.,  A  Training  Course  for  TEFL,  New  York:  Oxford  University  Press, 1983, p. 134.
21
Vecide  Erdogan,  Contribution  of  Error  Analysis  to  Foreign  Language  Teaching,  Mersin University, 2005 p. 263
22
HeidyDulayet.al, op.cit., pp.146-189
Constituents  include  the  elements  that  comprise  each  language  components.  For example;
Morphology: a ant Syntax: He no write
While  in  constituents,  it  includes  the  elements  that  comprise  each  language components.  For  example  within  syntax,  one  may  ask  whether  the  error  is  the
main or subordinate clause, which constituent is affected.
23
2 Error based on surface strategy taxonomy
This type of error has four subtypes. They are; a
Omission It  is  an  error  which  happens  because  a  learner  does  not  put  the  needed
morphemes  in  hisher  sentence.  The  morphemes  which  disappear  are  from the  content  morpheme  and  grammatical  morpheme.  For  example  in  the
sentence; Content morpheme: Rahmat is a teacher
Grammatical morpheme:Rahmat is a teacher b
Addition This type of error is contradictive to the previous one. The character of the
error is known by the presence of an item, which must not appear in a well- formed  utterance.  This  error  usually  appears  in  the  later  stage  of  L2
acquisition,  when  the  learner  has  already  acquired  some  target  language rule.  There  are  three  types  of  addition  errors  have  been  observed  in  the
speech  of  both  L1  and  L2:  double  markings,  regularizations,  and  simple addition. Here is the example of error in double marking
1 Double marking
Many  addition  errors  are  more  correctly  described  as  the  failure  to delete  certain  items  which  are  required  in  some  linguistic
constructions, but not in others. Example:
He doesn’t knows my name
23
Ibid. pp. 147-148.