GRAMMATICAL ERROR 1. INCOMPLETE SENTENCE (NO SUBJECT) Example: In the mathematics has many numbers. 2. INCOMPLETE SENTENCE (NO VERB) Example: What the definition of dilatation? 3. INCORRECT VERB Example: She using a circle glasses. 4. SUBJECT – VERB AGREEMENT Example: Michael have odd NIM in Yogyakarta State University. 5. ARTICLE Example: Five is a odd number. 6. ADVERB OF TIME Example: Last semester, I study about Logic. 7. PLURAL FORM Example: Square has four side. 8. WORD FORM Example: Long of the paper is 20 cm. 9. WORD ORDER Example: There are three triangle congruent. 10. PREPOSITION Example: 1 plus 7 equal 8. 11. PRONOUN Example: He is shock when the mouse run to his. 12. CONJUNCTION Example: That line is more similar to curve because not straight. 13. PASSIVE VOICE Example: The book of Calculus is reading by my sister. 14. DEGREE OF COMPARISON Example: Adrian gets higher score in the test. 15. NEGATIVE SENTENCE Example: Point haven’t size.