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 wear a shirt and two shoes. There are beautiful. The shirt is white. The shoes are pink. I like it.

Corrected essay:
My friend is wearing a shirt and a pair of shoes. They are beautiful. The shirt is white. The shoes are pink. I like them.

Error analysis:
error_sentence: My friend wear a shirt and two shoes.
correct_sentence: My friend is wearing a shirt and a pair of shoes.
error: wear
correction: is wearing
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to the context, the sentence describes an action the friend is currently performing (wearing clothes), requiring the present continuous tense to indicate ongoing action. The original verb 〈wear〉 is in the simple present tense, which cannot accurately convey the meaning of 'is wearing'. Therefore, following English grammar rules, the auxiliary verb 『is』 should be added before the verb, and 〈wear〉 should be changed to its present participle form 『wearing』, resulting in the correction 『is wearing』 to maintain tense consistency.
error_sentence: My friend wear a shirt and two shoes.
correct_sentence: My friend is wearing a shirt and a pair of shoes.
error: two
correction: a pair of
error_type: Number Error
error_severity: 2
error_description: Number Error: According to English idiomatic expression, when indicating the quantity of shoes, the fixed quantifier phrase 『a pair of shoes』 is typically used instead of directly using the number 〈two〉 to modify 〈shoes〉, because shoes, as paired items, need to be measured with 'a pair of'. Therefore, the non-idiomatic 〈two shoes〉 is modified to the standard English collocation 『a pair of shoes』 to accurately convey the quantity concept and maintain linguistic naturalness.
error_sentence: There are beautiful.
correct_sentence: They are beautiful.
error: There
correction: They
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: According to contextual semantic coherence rules, the preceding phrase 〈shirt and shoes〉 is a plural noun phrase, while the demonstrative pronoun 〈There〉 at the beginning of the subsequent sentence lacks a clear referential function and cannot correctly refer back to the aforementioned items of clothing. Based on the English grammar principle that pronouns and their antecedents must agree in number and case, the ambiguous 〈There〉 should be changed to the plural personal pronoun in the subjective case, 『They』, to ensure accurate reference to the plural concept in the preceding text.
error_sentence: I like it.
correct_sentence: I like them.
error: it
correction: them
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: According to the English grammar principle that pronouns and their antecedents must agree in number, the preceding phrase 〈shoes and shirt〉 is a plural noun phrase, while the subsequent use of the singular objective pronoun 〈it〉 cannot correctly refer to it. Therefore, the singular pronoun 〈it〉 needs to be changed to the plural objective form 『them』 to maintain number agreement.