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CHAPTER II THEORETICAL FRAMEWORK
In this chapter, the writer presents about clear description about vocabulary mastery that include the definition of vocabulary, the importance of vocabulary,
selecting vocabulary, word classes, types of testing vocabulary, the definition of picture storybook, steps for teaching vocabulary through storybook, and also there are
some related previous studies.
A. Vocabulary 1. The Definition of Vocabulary
People know how to use vocabulary because they use it in everyday life. They use it to express their emotion, to utter their opinion and idea directly or indirectly.
For instance, they express their idea and opinion at a discussion forum or they can express it indirectly by writing a book or diary. Yet, what is the
“vocabulary” itself?
There are some definitions of vocabulary based on dictionaries. In Cambridge dictionary, vocabulary is all the words that are known and used when discussing in
a particular language or subject. In addition, vocabulary is a list of words along with their meaning.
1
In oxford dictionary, vocabulary is
a
ll the words in a language that are used and known in particular book, subject, etc.
2
Based on Longman dictionary, vocabulary is all the words that are known and used by someone.
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1
Cambridge School Dictionary, UK: Cambridge University Press, 2008, p. 825.
2
A. S. Hornby, Oxford Advanced Learner’s Dictionary, UK: Oxford University Press., 2000,
Sixth edition, p. 1506.
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P e a r s o n , L o n g m a n D i c t i o n a r y o f C o n t e m p o r a r y E n g l i s h , 2 0 1 7 . R e t r i e v e d f r o m h t t p : w w w . l d o c e o n l i n e . c o m d i c t i o n a r y v o c a b u l a r y .
In short, vocabulary is all the words that are known and used when discussing in a particular book, subject, and language by someone. It means, vocabulary is
really important in daily life, so it can be the reason why people really need to increase their vocabulary.
2. The Importance of Vocabulary
Vocabulary is really important in a language. If students do not have many vocabulary, they will hard to understand a material that their teacher teaches
especially in English and misunderstanding about what other people say or write. If students have many vocabularies, they can use English well to utter their
opinion, idea, feeling as long as they know a topic that they are talking about. Moreover, they will understand a message when they are reading English book, or
material that is written in English by a writer. Acording to Sarwono and Purwanto, there are two main reasons why people
should learn vocabulary. First, people want other to understand what they say. The second reason is people want to understand what other people say. Moreover,
people do not want other to misunderstand in their communication.
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It means that people use words in their daily life, people communicate with others directly
talking, discussing or indirectly writing a book, writing a letter or note. If someone does not understand about what other talk or write about, it will be
a problem. For instance, there is an English teacher who gives her student a note for borrowing some storybooks at school library, because the teacher rush to meet
principle, the teacher does not explain about the note. But, the student does not understand about the note, he thinks his teacher asked for borrowing textbooks at
the library as usual. So, he goes to the library for borrowing some textbooks. When his teacher comes to the class, the teacher asks student to open a certain page in
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Jonathan Sarwono and Yudhy Purwanto, English for Academic Purpose, Yogyakarta: Andi Offset, 2013, p. 192.
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