c. Adjectives
According to Hatch and brown 1995: 228, adjectives are used to highlight qualities or attributes. Thomson and Martinet 1986: 33 classify kinds of
adjectives as follows. 1. Demonstrative adjective for example: this, that, these, those, etc.
2. Distributive adjectives for example: each, every, either, neither, etc. 3. Quantitative adjectives for example: some, any, littlefew, much, etc.
4. Qualitative adjectives for example: clever, dry, golden, etc. 5. Possessive adjectives for example: my, your, his, her, etc.
6. Interrogative adjectives for example: what, which, whose, etc. This research focused on qualitative adjective as the material because they are
mostly taught to the seventh grade students.
d. Adverbs
Hatch and Brown 1995: 230 define adverbs as similar to adjectives in many ways although they typically assign attributes to verbs, to clauses, or to entire
sentences rather than to nouns. They also classify adverbs into four kinds. They are as the following.
1. Manner adverbs slowly, quickly, etc. 2. Time adverbs yesterday, tomorrow, now, last week, next month, etc.
3. Place adverbs in the garden, in the market, at the zoo, etc. 4. Frequency adverbs always, never, etc.
This research focused on manner adverbs and frequency adverbs since they are the focused of the teaching material at seventh grade.
2.1.2. The Student’s Vocabulary Achievement
Vocabulary is one of the language components which is important to be learned. It covers words which will enable people to communicate with others.
People should have enough vocabularies in order that they can express their ideas and can understand what other people say.
Achievement is related to the test that is administered to discover how successful students have been in achieving the objective of a course Hughes,
2003:12. Vocabulary achievement in this research deal with the students’ achievement of vocabulary after they joined the teaching learning process of
vocabulary by using Word Cards. The vocabulary achievement was measured by using a vocabulary test covering nouns, verbs, adjectives, and adverbs large
vocabulary. The students’ vocabulary achievement was shown by the scores of the vocabulary test after the students joined the teaching learning process of
vocabulary by using Word Cards for the experimental group and joined the teaching learning process of vocabulary without using Word Cards for control
group.
2.2 Word Cards 2.2.1. Definitions of Word Cards
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