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CHAPTER 2. REVIEW ON RELATED LITERATURE
This chapter presents the discussion of literature underlined the topics of the research and its variables. The topics include Definition of Vocabulary, Classification
of Vocabulary, Aspects of Vocabulary Needed to be Taught, the Importance of Regular and Irregular Verbs in Language Teaching, Regular and Irregular Verbs
Achievement, Regular and Irregular Verbs Integrated with Reading, Definition of a Picture File, Advantages and Disadvantages of a Picture File, the Way of a Picture
File Classification, the Procedure of Teaching Regular and Irregular Verbs by Using a Picture File,
Students’ Participation, and Research Hypothesis.
2.1 Definition of Vocabulary
The small part of a language is vocabulary, so there is no language without vocabulary. As Thornburry 2007:1 states that language is derived from a word. It
means that in conveying an idea or feeling in language, people need to set some words to construct a sentence. Thus, in communicate using foreign language either in
written or spoken form, vocabulary is needed to describe the idea or feeeling. Having no the vocabulary, people cannot communicate to others. The more they know the
vocabulary, the better they can communicate to others. Based on how vocabulary influences someone’s language, knowledge of
vocabulary is very useful to be given to the students by the teachers. To know what is taught in teaching vocabulary, it is important for the teachers to know what
vocabulary is. Vocabulary is a list or set of words for a particular language or set of words that individual speakers of language might use Hatch and Brown, 1995:1.
While Schmitt 2000:2 defines vocabulary is an item having a single meaning, regardless of the number of words it contains. In addition Ur 1996:60 defines
vocabulary is the words taught in foreign langugae. From definitions above,
vocabulary is a word or a string of words used in a particular language and have a meaning. For example, an English teacher teaches English vocabulary to the students,
it means that she need to teach a meaningful word or group of words that are used in communication using English.
2.2 Classification of Vocabulary
Kategori