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:
Amy is my favourite friend, she is a pretty girl. She wears a pure white shirt and a pail of blue shoes. She is beautiful! The pink schoolbag is lovely, she very likes it.

Corrected essay:
Amy is my favourite friend. She is a pretty girl. She wears a pure white shirt and a pair of blue shoes. She is beautiful! The pink schoolbag is lovely and she likes it very much.

Error analysis:
error_sentence: Amy is my favourite friend, she is a pretty girl.
correct_sentence: Amy is my favourite friend. She is a pretty girl.
error: , she
correction: . She
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English sentence structure rules, 〈Amy is my favourite friend〉 and 〈she is a pretty girl〉 are two complete independent simple sentences and cannot be connected only by a comma. A period should be used for separation to form two standard simple sentences, changing it to 『Amy is my favourite friend. She is a pretty girl.』; ② Case Error: According to English punctuation rules, the first letter after a period must be capitalized. The original sentence in 〈friend, she〉 does not follow this rule; the lowercase 〈she〉 needs to be corrected to the uppercase form 『She』 to ensure compliance with standard English writing conventions.

error_sentence: She wears a pure white shirt and a pail of blue shoes.
correct_sentence: She wears a pure white shirt and a pair of blue shoes.
error: pail
correction: pair
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the rules of English pronunciation and spelling correspondence, 〈pail〉 meaning 'bucket' and the correct word 『pair』 meaning 'pair/set' are near-homophones with different meanings. The context here requires expressing the quantity unit for shoes, so the misused 〈pail〉 is corrected to the quantifier 『pair』, forming the complete phrase 『a pair of blue shoes』 to accurately convey the meaning 'a pair of blue shoes'.

error_sentence: The pink schoolbag is lovely, she very likes it.
correct_sentence: The pink schoolbag is lovely and she likes it very much.
error: , she very likes it
correction: and she likes it very much
error_type: Word Order Error
error_severity: 5
error_description: ① Punctuation Error: According to English written expression norms, a comma cannot connect two independent main clauses, so the 〈,〉 needs to be removed and a conjunction added here; ② Conjunction Error: According to English compound sentence structure rules, the two independent clauses 〈The pink schoolbag is lovely〉 and 〈she very likes it〉 lack the necessary connecting means. Since the two clauses are in a parallel relationship, the coordinating conjunction 『and』 needs to be added to form a complete compound sentence structure, changing it to 『The pink schoolbag is lovely and she likes it very much』 to comply with English parallel sentence norms; ③ Word Order Error: According to English adverb phrase placement rules, 〈very likes〉 has an improper word order issue. The degree adverb 〈very〉 cannot directly modify the verb but should be paired with 『much』 to form 『very much』 as an adverb phrase, placed after the verb's object. Therefore, the incorrect word order 〈very likes〉 is adjusted to the standard expression 『likes it very much』; ④ Adverb Error: According to English adverb usage norms, the single adverb 〈very〉 cannot directly modify the verb 〈likes〉; it must be combined with 『much』 to form 『very much』 as a complete adverb phrase modifying the verb. Therefore, it is corrected to 『likes it very much』, making the modification relationship of the degree adverb conform to English grammar rules.