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:
My friend is very beautiful. Her names is Gao ya ting. On monday she wears a pure white. And her shoes is pretty. I like Her coat is very lovely.

Corrected essay:
My friend is very beautiful. Her name is Gao Yating. On Monday she wears a pure white shirt. And her shoes are pretty. I like her coat. It is very lovely.

Error analysis:
error_sentence: Her names is Gao ya ting.
correct_sentence: Her name is Gao Yating.
error: names
correction: name
error_type: Noun Number Error
error_severity: 3
error_description: Noun Number Error: The subject 〈names〉 is plural, but the context indicates a single name, so the singular form 『name』 should be used; therefore, 〈names〉 is changed to 『name』 to conform to grammatical rules.

error_sentence: Her names is Gao ya ting.
correct_sentence: Her name is Gao Yating.
error: ya ting
correction: Yating
error_type: Spelling Error
error_severity: 3
error_description: Spelling Error: According to English writing conventions, the given name and surname in Chinese names should be written separately, two-character given names are kept together, and both the surname and given name should be capitalized; therefore, 〈Gao ya ting〉 is changed to 『Gao Yating』.

error_sentence: On monday she wears a pure white.
correct_sentence: On Monday she wears a pure white shirt.
error: monday
correction: Monday
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English writing conventions, proper nouns require capitalization; 〈monday〉 is a proper noun meaning 'Monday', so it needs to be changed to 『Monday』 to conform to the convention.

error_sentence: On monday she wears a pure white.
correct_sentence: On Monday she wears a pure white shirt.
correction: shirt
error_type: Noun Error
error_severity: 3
error_description: Noun Error: In the sentence 〈she wears a pure white〉, the adjective phrase 〈pure white〉 lacks a specific noun; based on the context, 『shirt』 should be added here to complete the sentence.

error_sentence: And her shoes is pretty.
correct_sentence: And her shoes are pretty.
error: is
correction: are
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: The subject 〈shoes〉 is plural, while the verb 〈is〉 is singular, resulting in a subject-verb agreement error; the singular verb 〈is〉 needs to be changed to the plural form 『are』 to maintain agreement.

error_sentence: I like Her coat is very lovely.
correct_sentence: I like her coat. It is very lovely.
error: Her coat
correction: her coat. It
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Case Error: According to English writing conventions, 〈Her〉 in the middle of the sentence should not be capitalized and needs to be changed to 『her』; ② Sentence Structure Error: 'I like her coat is very lovely' mixes two sentence patterns, using two verbs 'like' and 'is' and using 'her coat' as both object and subject, which is a sentence structure error. The pronoun 'It' is added here, changing the sentence to 『I like her coat. It is very lovely』 to satisfy English grammar.