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 classmate wear a pink and lovely shirt, wear a whire shoes, They are beautiful, I like them.

Corrected essay:
My classmate wears a pink and lovely shirt and wears white shoes. They are beautiful. I like them.

Error analysis:
error_sentence: My classmate wear a pink and lovely shirt, wear a whire shoes, They are beautiful, I like them.
correct_sentence: My classmate wears a pink and lovely shirt and wears white shoes.
error: wear
correction: wears
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: According to the context, the subject 〈My classmate〉 is third-person singular, and the predicate verb needs to be in the corresponding third-person singular form. Therefore, there is a subject-verb agreement error here, and 〈wear〉 needs to be changed to 『wears』 to comply with the subject-verb agreement principle.

error_sentence: My classmate wear a pink and lovely shirt, wear a whire shoes, They are beautiful, I like them.
correct_sentence: My classmate wears a pink and lovely shirt and wears white shoes.
error: , wear a whire shoes,
correction: and wears white shoes.
error_type: Conjunction Error
error_severity: 5
error_description: ① Punctuation Error: According to English grammatical structure norms, verbs in a parallel structure need to be connected by 'and' and cannot simply be linked by a comma, which would make the predicate verb non-compliant with English grammatical principles; therefore, the 〈,〉 here needs to be deleted; ② Conjunction Error: According to the context, the intention is to express "My classmate wears a lovely pink shirt and white shoes". The 'and' in the previous clause connects two adjectives modifying 'shirt', whereas the expression "wears shoes" here is clearly parallel to "wears a shirt", operating at a higher structural level than the preceding adjectives. Therefore, a conjunction is needed between the parallel actions within the same sentence to avoid semantic run-on; the conjunction 『 and 』 needs to be added; ③ Subject-Verb Agreement Error: The subject 〈My classmate〉 is third-person singular, and the predicate verb needs to be in the corresponding third-person singular form. Therefore, there is a subject-verb agreement error here, and 〈wear〉 needs to be changed to 『wears』 to comply with the subject-verb agreement principle; ④ Determiner Error: The plural noun 〈shoes〉 cannot be preceded by the indefinite article 〈a〉; 『a』 needs to be deleted to comply with English grammar rules; ⑤ Spelling Error: According to the meaning of the sentence, the intention is to express "white shoes"; 〈whire〉 needs to be changed to 『white』 to match the meaning and English spelling conventions; ⑥ Punctuation Error: According to English writing conventions, a sentence needs to end with a punctuation mark after the final word. This sentence is declarative, so the comma should be changed to a period, changing 〈shoes,〉 to 『shoes.』.

error_sentence: My classmate wear a pink and lovely shirt, wear a whire shoes, They are beautiful, I like them.
correct_sentence: They are beautiful.
error: ,
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English syntax rules, 〈They are beautiful〉 and 〈I like them〉 contain two independent subject-verb structures and can stand as separate sentences. Therefore, there is a punctuation error here. The 〈,〉 needs to be changed to 『.』 to separate the two independent sentences in accordance with English syntax rules.