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 classmate is very beautiful. She is wear white shirt, shoe and coat. I like her shoe

Corrected essay:
I have a classmate who is very beautiful. She is wearing a white shirt, shoes and a coat. I like her shoes.

Error analysis:
error_sentence: I have a classmate is very beautiful.
correct_sentence: I have a classmate who is very beautiful.
correction: who
error_type: Relative Word Error
error_severity: 3
error_description: Relative Word Error: According to the grammatical rules of English relative clauses, when the main clause 〈I have a classmate〉 needs to be followed by a modifying clause, a relative pronoun must be added as a connector. Therefore, the missing relative pronoun 『who』 is added, correcting the structurally incomplete 〈is very beautiful〉 to the standard relative clause 『who is very beautiful』 to make the sentence structure complete.

error_sentence: She is wear white shirt, shoe and coat.
correct_sentence: She is wearing a white shirt, shoes and a coat.
error: wear
correction: wearing a
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: ① Nonfinite Verb Form Error: According to English tense usage rules, describing an action in progress at the time of speaking requires the present continuous structure (be verb + present participle). Therefore, the simple present verb 〈wear〉 is corrected to the present participle form 『wearing』, and the corresponding be verb is added to form the complete continuous structure 『is wearing』, ensuring the accurate expression of the ongoing action "is wearing"; ② Determiner Error: According to English noun usage rules, a singular countable noun 〈shirt〉 must be accompanied by an indefinite article when first mentioned. Therefore, 『a』 needs to be added before the noun to form the standard expression 『a shirt』.

error_sentence: She is wear white shirt, shoe and coat.
correct_sentence: She is wearing a white shirt, shoes and a coat.
error: shoe and
correction: shoes and a
error_type: Noun Number Error
error_severity: 5
error_description: ① Noun Number Error: According to the principle of number agreement for English nouns, when referring to multiple items, the countable noun 〈shoe〉 must be in the plural form. Therefore, the singular form is corrected to the plural form 『shoes』 to ensure matching with the plural context and meet the actual expressive need for "a pair of shoes"; ② Determiner Error: According to English article usage rules, a singular countable noun 〈coat〉 must be accompanied by an article when used generically. Therefore, the indefinite article 『a』 is added to form the correct structure 『a coat』.

error_sentence: I like her shoe
correct_sentence: I like her shoes.
error: shoe
correction: shoes.
error_type: Noun Number Error
error_severity: 2
error_description: ① Noun Number Error: According to the practical usage norms of English nouns, 〈shoe〉, as an item that appears in pairs (one for each foot), must be used in the plural form in generic or plural contexts. Therefore, the singular form 〈shoe〉 is corrected to the plural form 『shoes』 to accurately reflect the plural concept of "a pair of shoes"; ② Punctuation Error: According to English written expression norms, a sentence must end with a concluding punctuation mark. Based on the original sentence, it is a declarative sentence, so a period should be added at the end, changing it to 『shoes.』.