Writing prompt: Based on what you learned in this unit and the provided hints, use colors to describe your classmate's attire.
Writing hints: wear; shirt; shoes; beautiful; like

Student essay:
I have a beautiful sturten. She wear pink shirt. She wear yellow coat. She wear black shoes.

Corrected essay:
I have a beautiful classmate. She wears a pink shirt. She wears a yellow coat. She wears black shoes.

Error analysis:
error_sentence: I have a beautiful sturten.
correct_sentence: I have a beautiful classmate.
error: sturten
correction: classmate
error_type: Spelling Error
error_severity: 2
error_description: ① Spelling Error: Based on the sentence meaning, the intention is to express "I have a beautiful classmate", thus 〈sturten〉 is a misspelling of 『classmate』; it needs to be corrected to 『classmate』 to make the sentence coherent.

error_sentence: She wear pink shirt.
correct_sentence: She wears a pink shirt.
error: wear
correction: wears a
error_type: Subject-Verb Agreement Error
error_severity: 4
error_description: ① Subject-Verb Agreement Error: According to the English subject-verb agreement rule, when the subject is third-person singular (〈She〉), the verb should be in the third-person singular form. The original sentence's 〈wear〉 does not follow this rule, which is a subject-verb agreement error; 〈wear〉 needs to be changed to 『wears』 to maintain subject-verb agreement; ② Determiner Error: According to English grammar rules, when the singular countable noun 〈shirt〉 is used generically, it requires the indefinite article 『a』 before it. The original sentence lacks the indefinite article, which is a determiner error; 『a』 needs to be added to comply with grammatical rules.

error_sentence: She wear yellow coat.
correct_sentence: She wears a yellow coat.
error: wear
correction: wears a
error_type: Subject-Verb Agreement Error
error_severity: 4
error_description: ① Subject-Verb Agreement Error: According to English grammar rules, when the subject is third-person singular (〈She〉), the verb should be in the third-person singular form. The original sentence's 〈wear〉 does not follow this rule, which is a subject-verb agreement error; 〈wear〉 needs to be changed to 『wears』 to maintain subject-verb agreement; ② Determiner Error: According to English grammar rules, when the singular countable noun 〈coat〉 is used generically, it requires the indefinite article 『a』 before it. The original sentence lacks the indefinite article, which is a determiner error; 『a』 needs to be added to comply with grammatical rules.

error_sentence: She wear black shoes.
correct_sentence: She wears black shoes.
error: wear
correction: wears
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: ① Subject-Verb Agreement Error: According to the English subject-verb agreement principle, when the subject is third-person singular, the verb should be in the third-person singular form. In the original sentence, the subject 〈She〉 is third-person singular, but the verb 〈wear〉 is not in the third-person singular form; this is a subject-verb agreement error. 〈wear〉 needs to be changed to 『wears』 to maintain subject-verb agreement and comply with English grammar rules.