grammar rules. By mastering grammar of target language, especially English, it will be helpful in  supporting  the language  student process  in  which in  spoken  or written
language,  in  this  case  is  reading  comprehension. In  addition,  in  order  to
understanding  information  or  story,  the  reader  should  have  knowledge  about  the sentence  structure.  In  this  case,  in  English,  the  readers  who  have  mastered  many
vocabularies and have knowledge about English sentence structure, they will get the idea of the information  or story  easily due to  they know the meaning of vocabulary
based  on  the  sentence  structure.  Furthermore,  English  vocabulary  have  many meaning  based  on  the  function  of  the  word  in  a sentence.  Moreover,  it  is  important
having knowledge of sentence structure or grammar.
In second language reading research, Alderson points to the significance of a particular  syntactic  structures  knowledge  or  the  ability  to  process  them  to  some
aspects  of  second-language  reading  and  the  ability  to  parse  sentences  into  their accurate syntactic structure emerges to be an important element in understanding text
for  him.
17
Following  Nassaji,  any  understanding  of  reading  texts  and  knowing  the utterance  need  close  attention  to  a  numeral  of  factors;  one  fundamental  factor  of
which is the knowledge of grammar.
18
It can be concluded that grammar mastery has been  the  important  part  in  getting  the  understanding  of  a  text  due  to  its  knowledge
about the sentence structure which is essential in comprehending a text.
D.   The Relevant Study
There  are  three  studies  that  are  related  to  this  study.  Those  are  the relationship between grammatical knowledge and the ability to guess word meaning:
the case of Iranian EFL students with upper intermediate level of proficiency written by Ranjbar, a correlation between grammar achievement and reading comprehension
17
Dongbo  Zhang,  Vocabulary  and  Grammar  Knowledge  in  Second  Language  Reading Comprehension: A Structural Equation Modeling Study, The Modern Language Journal, Vol. 96, No.
4, 2012, p. 560.
18
Mehnoosh Ranjbar, The Relationship between Grammatical Knowledge and the Ability to Guess Word  Meaning:  The  Case  of  Iranian  EFL  Learners  with  Upper  Intermediate  Level  of  Proficiency,
Theory and Practice in Language Studies, Vol. 2, No. 6, 2012, p. 1305.
achievement written by Darmono, and the correlation between grammar mastery and writing  ability  a  correlational  study  at  the  sixth  semester  of  Department  of  English
Education students of State Islamic University Syarif Hidayatullah Jakarta written by Septiani.
The  first  study  is  the  relationship  between  grammatical  knowledge  and  the ability  to  guess  word  meaning:  the  case  of  Iranian  EFL  students  with  upper
intermediate level of proficiency written by Ranjbar, the study was conducted in June 2012.  This  study  provided  some  empirical  data  to  examine  the  contribution  of
grammatical  knowledge  in  getting  the  meaning  of  unknown  words.  Moreover,  this study  used  correlation  design.  In  addition  the  objective  of  the  study  was  to  see  if
grammatical  knowledge  played  any  significant  role  in  word  guessing.  Then,  the participants  of  the  study  were  thirty  female  students  of  Iranian  EFL  students  with
upper  intermediate  level  of  proficiency.  Furthermore,  there  were  three  kinds  of instrument in this study; those are vocabulary test, grammar test, and unknown words
in context. In the result, it was indicated that grammar knowledge was a key factor in deciphering the meanings of unknown words and it was also concluded that the more
comprehensive  the  grammar  knowledge  was,  the  higher  the  student s’  proficiency
level in guessing words would be.
19
The second study is a correlation between grammar achievement and reading comprehension  achievement  written  by  Darmono  in  2013.  The  research  focused  on
the correlation between grammar achievement and reading comprehension at the first semester of English Department of Islamic University of Malang and the aim was to
ascertain the relationship between grammar achievement and reading comprehension achievement.  The  population  of  this  research  was  the  first  semester  of  English
Department  of  Islamic  University  of  Malang  and  the  sample  is  33  students  of  110 English Department students. The instrument in this research was the document final
score  of  semester  test.  Then  the  collected  data  analyzed  by  using  Pearson  Product
19
Ibid.
Moment  Correlation  Formula.  In  addition,  the  result  showed  that  there  was  a  very weak  correlation  between  grammatical  achievements  and  reading  comprehension
achievements  at  the  first  semester  of  English  Department  of  Islamic  University  of Malang.
20
The  third  research  is  the  correlation  between  grammar  mastery  and  writing ability a correlational study at the sixth semester of Department of English Education
students of State Islamic University Syarif Hidayatullah Jakarta written by Septiani in  2014.  The  aim  of  the  research  was  to  know  whether  there  is  a  significant
correlation between  grammar mastery and writing ability at  the sixth  of Department of English Education students of State Islamic University Jakarta. Then, this research
used quantitative method and correlational technique. Furthermore, the population of this  research  was  the  sixth  semester  of  Department  of  English  Education  of  State
Islamic University Jakarta and the sample of this research was 33 students of B class. Finally,  the  result  showed  that  there  is  a  very  low  correlation  between  students’
grammar mastery and writing ability.
21
E.  Theoretical Framework
Based on Rodney Huddleston and Geoffrey K. Pullum, Grammar deals with the  sentenc
es’  form  and  the  smaller  units,  such  as  clauses,  phrases,  and  words. Compare  with  the  pronunciation  and  the  words’  stock,  grammar  of  the  Standard
English  is  much  more  stable  and  uniform;  there  is  remarkably  little  dispute  about what  is  grammatical  in  comp
liance with the rules of grammar and what isn’t.
22
It showed that the rules of grammar in Standard English is constant and there was little
disagreement in deciding which was the sentence was grammatical  correct or no. In
20
Darmono,  A  Correlation  between  Grammar  Achievement  and  Reading  Comprehension Achievement, JP3, Vol. 1, 2013, p. 25.
21
Reni  Septiani, “The  Correlation  between  Grammar  Mastery  And  Writing  Ability  A
Correlational  Study  at  The  Sixth  Semester  of  Department  of  English  Education  Students  of  State Islamic University Syarif Hidayatullah Jakarta
”, a SKRIPSI Presented To The Faculty of Educational Sciences In State Islamic University Syarif Hidayatullah Jakarta, Jakarta, 2014, p. v, not published.
22
Huddleston and Pullum, loc. cit.