The Causes of Errors Sources of Error

b. Addition Addition occurs when learners presented unnecessary element to their sentences. 27 Here are some examples of omission errors which commited by the students: 1. My new bicycle is more cheaper than new motorcycle. 2. Raisa is more fattest of all. 3. Tedi is more older than Amy. c. Misformation Misformation error occurs when the students chose the wrong form of structure or morpheme. 28 such as the following sentences: 1. A pencil is more cheap than pen 2. Sally’s score is gooder than Ani. d. Misorder Misorder errors occur when the learner put an utterence in wrong order. 29 Such as in the following sentence: 1. My father is the buisest person. 2. Pensil is than cheaper a pen.

B. Degrees of Comparison

In this part, the writer explains about the adjective, the adverb, and the degrees of comparison.

1. Adjective

a. Definition of Adjective Adjective is a part of Grammar, It includes in the part of speech which is functioned to know the condition of a language. It is an important element and it is needed to know about grammar and syntax. It is also as modifier of noun. 27 Ibid, p. 107. 28 Ibid, p. 108. 29 Ibid, p. 110. b. Kinds of Adjective In many languages, adjectives can be compared. In English, for example, it can be said that a car is big, that it is bigger than another is, or that it is is the biggest car of all. There are three kinds of adjective. They are Attributive, Postpositive, and Predicative. They are where an adjectives can be placed, such as before a noun, after a noun, or in the predicate. According to Pullum and Huddleston, they said that Attributive adjectives function as internal pre-head modifier to a following noun, and Predicative adjectives function mainly as predicative complement in clause structure. 30 Here are some examples: Table 2.2 The Examples of Attributive and Predicative of Adjectives Atributive use An old car, black hair, good news. Predicative use The car is old, Her hair is black, The news is good However, Not only adjectives functions such as attributive and predicative, but also there are two minor adjectives functions. They are Postpositive and External modifiers. Postpositive adjectives function as post –head internal modifier becaude the adjective has its own post-head dependents.On the other hand, external modifiers form of Adjective Phrase at the beginning of the Noun Phrase, before the indefinite article. 31 Here are some example: Table 2.3 The Examples of Postpositive and External Modifiers of Adjectives Postpositive use children keen on sport, a report full of errors External modifiers It seemed such a bargain, What a fool I was 30 Huddleston Rodney Pullum Geoffrey K, A Student’s Introduction to English Grammar, Cambridge:Cambridge University Press,2005, pp. 112 —122. 31 Ibid, p. 121.

2. Adverbs

a. The Definitions of Adverb Adverb is the last part of speech in the language. So, it is important that the students to know about it. Adverbs are adjectives which are given by –ly in the last word of adjective and it is also as modifier of verbs. 32 For example, A happy family adjective, They lived happily ever after adverb. As the first example is adjective can be modifier of noun, adjective is happy, and it will modify noun which is family. As the last example is adverb can be modifier of verb. Because adverb is happily, and it will modify verb which is lived. Not all adjectives –ly are adverbs, but there are some adjectives have formed –ly in the last word. For example, beastly, cowardly, deathly, fatherly, friendly, princely, womanly. 33 b. The Types of Adverb These adverbs consist of several types: 1. Adverbs of manner. Example hard, fast One group of manner adverbs has two forms, one with ending –ly such as slow – slowly, quick – quickly, cheap – cheaply, dear – dearly, loud – loudly, clear – clearly. and one without ending –ly are less formal ; they generally appear only directly after the verb such as Please drive slower or more slowly . 2. Adverb of distance and direction. Example close, far, near, straight , low, high. The –ly adverbs of manner are compared by the use of more – than, the most. Less – than, the least are also used in the comparison of manner adverbs.

3. Degrees of Comparison

a. The Definitions of Degrees of Comparison A general definition of degree of comparison can be given along the following lines. Leech argued that ―Degrees of Comparison are used when compare one person or one thing with another by using adjective and 32 Ibid. p. 122. 33 Ibid. p. 124.