For adjectives ending in -y form comparative by adding -er, the -y is changed to -i: For adjectives ending in -e, forms their comparative by adding -st:

 Subject + verbto be + the + adjective + st + complement Examples:  Riki is the bravest person among his friends.  Rudi is the latest one in his class. c. For adjectives ending one vowel and one consonant, form their comparative by doubling the last consonant and adding -est.  Subject + verbto be + the + adjective + est + complement. Examples:  Abdullah is the thinnest person among his friends.  The bus is the biggest among of the three vehicles. d. For adjectives that have three or more syllables, most are used:  Subject + verbto be + the + most + adjective + complement. Examples:  The lion is the most dangerous animal in the jungle.  He is the most popular student in my school.

e. For adjectives ending in -y form comparative by adding -est, the -y is changed to -i:

 Subject + verbto be + the + adjective + er + complement. Examples:  Adinda is the prettiest girl in her class.  The bos is the happiest person among his employees. After explaining some patterns and examples, the teacher asks the students to memorize the patterns and make some other examples of positive, comparative and superlative adjective. Then, the teacher asks hisher students to translate one by one the sentences they have made into students’ native language sentences. 32 C H A P T E R III R E S E A R C H M E T H O D O L O G Y In this chapter, the writer discusses Research Methodology which consists of seven main topics; The Method of The Research, The Population and The Sample, The Instrument of The Research, The Place and The Time of Research, The Technique of Data Collecting, The Technique of Data Analysis, and The Hypothesis of The Research.

A. The Method of the Research

In this study, the writer used quasi-experiment method. The quasi experiment research has characteristics as stated by Nunan “Quasi-experiment has both pretest and posttests and experimental and control groups, but no random assignment of subjects”. 1 Means that the writer will not give an assignment to each subjectstudent in determining which person that will be in experiment class and which person that will be in control class. He only took the sample from existing groupclass to determine which group that will be experiment class and which group that will be control class. The writer took and compared two classes for the research; they were experiment class and control class. The research was conducted in five meetings. In the first meeting, the writer gave pre- test to obtain the students’ achievement before the treatment was done. Then the writer gave the treatment for three meetings in teaching degree of comparison using pictures for the experimental class and without using picture or through conventional teaching method for the control class. The last, the writer gave post-test to know whether there was significance difference of students ’ achievement after doing a treatment in both classes. 1 David Nunan, Research Methods in Language Learning, Cambridge: Cambridge University Press, 1992, p. 41.