Writing prompt: Using the information provided in Chinese and referring to the picture, write a short essay.
Mr. Cool's Clothes Store is having a big sale with great discounts. Sweaters in various colors are only 30 yuan, shorts are only 20 yuan, and shirts are only 25 yuan. Large bags sell for 35 yuan, and small bags for 20 yuan. There are also many beautiful shoes and skirts available. Welcome to shop.

Student essay:
My mother is very excited . She very like goes shopping. She buy many things , she buy a bag, a dress, a shouse. . . . . . She is very happy.

Corrected essay:
My mother is very excited. She likes going shopping very much. She buys many things. She buys a bag, a dress, a pair of shoes... She is very happy.

Error analysis:
error_sentence: She very like goes shopping.
correct_sentence: She likes going shopping very much.
error: very like goes shopping
correction: likes going shopping very much
error_type: Subject-Verb Agreement Error
error_severity: 5
error_description: ① Adverb Error: The adverb of degree 〈very〉, when modifying a verb phrase, should be placed at the end of the sentence or after an auxiliary verb, and according to English usage, "like… very much" should be used to express "like very much", thus 〈very like〉 is changed to “likes...very much”. ② Subject-Verb Agreement Error: The subject 〈She〉 is third-person singular, so the verb 〈like〉 needs to be in the third-person singular form, thus 〈like〉 is changed to 『likes』; ③ Nonfinite Verb Form Error: The sentence already has the predicate 〈like〉, and there is no conjunction between the predicate 〈like〉 and the verb 〈goes〉, so the verb 〈goes〉 needs to be in a nonfinite form, and should be changed to the gerund 『going』 as the object.
error_sentence: She buy many things , she buy a bag, a dress, a shouse. . . . . .
correct_sentence: She buys many things.
error: buy
correction: buys
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: According to English grammar rules, the subject 〈She〉 is third-person singular, so the verb 〈buy〉 needs to be in the third-person singular form to maintain subject-verb agreement, thus 〈buy〉 is changed to 『buys』, thereby ensuring grammatical correctness.
error_sentence: She buy many things , she buy a bag, a dress, a shouse. . . . . .
correct_sentence: She buys many things. She buys a bag, a dress, a pair of shoes...
error: , she buy
correction: . She buys
error_type: Punctuation Error
error_severity: 5
error_description: ① Punctuation Error: According to English writing rules, two independent clauses 〈She buys many things〉 and 〈she buys a bag〉 need to be separated by a period, thus 〈, she〉 is changed to a period 『. She』. ② Subject-Verb Agreement Error: According to the English subject-verb agreement principle, the verb 〈buy〉 needs to be changed to 『buys』 based on the third-person singular form of the subject 〈she〉 to maintain subject-verb agreement.
error_sentence: She buy many things , she buy a bag, a dress, a shouse. . . . . .
correct_sentence: She buys a bag, a dress, a pair of shoes...
error: shouse. . . . . .
correction: pair of shoes...
error_type: Spelling Error
error_severity: 2
error_description: ① Spelling Error: According to the sentence meaning, the intention here is to express "shoes", so 〈shouse〉 is changed to 『shoes』 to fit the meaning. ② Determiner Error: According to the sentence meaning, the intention is to express "a pair of shoes", therefore 『a pair of 』 needs to be added before 〈shouse〉 to express a specific quantity of the plural form; ③ Punctuation Error: According to English writing conventions, the ellipsis punctuation 〈. . . . . .〉 should be changed to 『...』 to conform to English punctuation standards.