even from university. Facing English all the time, students are familiar with vocabulary. It means that they should always improve their size of vocabulary in
order to follow their English need. If they could not improve their vocabulary size, they would not be able to follow their English lesson well.
Considering the problem above, the researcher is going to look at the vocabulary of English Junior High School textbook. This research is based on a
corpus study. This study does not attempt to judge of textbook quality, but to find the vocabulary used in the textbook, with the hope that future studies will improve
on the methodology used. This research can also be used as a way to help in analyzing the overall quality of textbook and help to create better English material
for students.
B. Problem Identification
As stated in the background, vocabulary mastery is seen as the main element for students to the success of second language learning. It is because
vocabulary mastery covers the ability to understand the vocabulary receptive knowledge and to use the vocabulary in the proper term productive knowledge.
It means that if students do not master vocabulary well, they will find difficulty in following their learning activity. In other words
, students‟ inadequate vocabulary makes the receptive and productive English difficult to improve. In order that the
condition does not hinder students‟ success in learning English, there must be an effort to enlarge students‟ vocabulary. The effort must be done seriously so that
the students have an adequate vocabulary. The students will be encouraged in using English both receptively and productively if they have enough vocabulary.
To know how many vocabulary items word families that the students used, the researcher will analyze using textbook. The texbook will represent the vocabulary
that the students learn. From the textbook, it can be seen the vocabulary appears and used by the students.
C. Problem Limitation
The researcher will limit the problem in order to be able to explain well. It is impossible for the researcher to study all parts of vocabulary because of the
limited time, finances and ability of the researcher. Vocabulary learning can be viewed in two dimensions, breadth and depth Qian, 2002; Read, 1988; Wesche
Paribakht, 1996. Breadth of vocabulary knowledge refers to the number of words one has at least superficial knowledge of one‟s vocabulary coverage and can be
calculated in terms of recognition, recall or production of vocabulary items. Depth of vocabulary knowledge, on the other hand, refers to how well one knows a
word. Although increasing both breadth and depth of vocabulary knowledge is regarded as important to improving reading comprehension Qian, 1999, 2002;
Read, 1993, breadth has attracted more attention than depth in L2 empirical studies to date. Accordingly, the aim of this research is to focus on analyzing
textbook provides for promoting breadth of vocabulary knowledge. To answer the second research question, namely,
“How are the words recycled?” the researcher will limit the problem about word recycled. The word
recycled is a favorable condition in vocabulary learning Nation, 2001. Research on the effect of word recycling on vocabulary learning has focused on three
variables: 1 the number of repetitions, 2 spacing of repetitions, and 3 types of
repetitions. However, this research only focuses on the number of repetition word recycling to make a deep discussion.
In order to analyze how representative the vocabulary presented in English textbooks, the researcher only focuses on one Junior High School textbook. It is
the English textbook of curriculum 2006 published by the government. Since the limitation of time, the researcher only analyzes one level of Junior High School
English textbook in the first grade. To get the data, the researcher analyzed the textbook. Masuhara 1998
states that teachers who conduct the process of textbook selection consider students, teachers and administrators‟ needs and wants. In Indonesia, there are a
lot of textbooks published and some of them have been recommended to be used at school by the government based on the Ministry of National Decree.
Considering most of schools will use
English in Focus
textbook published by the government, this research will analyze it. This research only focuses on one
textbook in order to get sharper investigation and discussion. Although this textbook is for curriculum 2006, some of schools still use this textbook. This
research tries to elaborate the vocabulary items used in the textbook to help teachers make decisions in using the textbook to support students‟ learning
activity.
D. Problem Formulation
