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:
Mr. Cool's Clothes Store is selling small. It's very cheap. The sweater is good. And have a lot of coler. The clothes have a lot of kinds. The sweater only sell 30 yuan. The shirt only sell 20 yuan. The bloues only sell 25 yuan. The big bag only sell 35 yuan. The handbag only sell 20 yuan. The store have got a lot of skirts and shoes. Welcome to the store.

Corrected essay:
Mr. Cool's Clothes Store is having a big sale. It's very cheap. The sweaters are good and have a lot of colors. There are a lot of kinds of clothes. The sweaters only sell for 30 yuan. The shirts only sell for 25 yuan. The blouses only sell for 25 yuan. The big bags only sell for 35 yuan. The handbags only sell for 20 yuan. The store has got a lot of skirts and shoes. Welcome to the store.

Error analysis:
error_sentence: Mr. Cool's Clothes Store is selling small.
correct_sentence: Mr. Cool's Clothes Store is having a big sale.
error: selling small
correction: having a big sale
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Verb Choice Error: According to English semantic logic and expression habits, the combination of "selling" and "small" does not fit the context of a "big sale." In English, expressing that a store is having a big sale requires using "having a big sale." The original phrase 〈selling small〉 is a verb choice error; the combination of "selling" and "small" cannot convey the meaning of a big sale. Therefore, 〈selling small〉 is changed to 『having a big sale』 to accurately express that the store is having a big sale, conforming to English expression habits.; ② Sentence Structure Error: According to English semantic logic and expression habits, the combination of "selling" (to sell) and "small" (small) cannot express the meaning of a "big sale." In English, expressing that a store is having a big sale requires using "having a big sale." The phrase 〈selling small〉 in the original sentence is a verb choice error; the combination of "selling" and "small" does not fit the contextual logic of a "big sale." Therefore, 〈selling small〉 is changed to 『having a big sale』 so that the sentence accurately conveys the content that the store is having a big sale, conforming to English expression habits.

error_sentence: The sweater is good. And have a lot of coler.
correct_sentence: The sweaters are good and have a lot of colors.
error: sweater is good. And
correction: sweaters are good and
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: ① Noun Number Error: According to the context, the sweaters described here are more than one (as indicated later by "have a lot of colors"); in English, plural nouns are needed to represent multiple objects. Therefore, 〈sweater〉 should be changed to the plural form 『sweaters』.; ② Subject-Verb Agreement Error: According to English grammar rules, the subject and verb must agree in number. In the original sentence, after changing the subject 〈sweater〉 to the plural form 『sweaters』, the verb 〈is〉 is singular, violating the subject-verb agreement rule. Therefore, 〈is〉 needs to be changed to the plural form 『are』 to ensure agreement between the subject 『sweaters』 and the verb 『are』, making the sentence grammatically correct.; ③ Punctuation Error: According to English writing conventions, when "and" connects two parallel verbs, a period is not needed in between. Therefore, 〈. And〉 should be changed to 『and』 to conform to correct writing standards.

error_sentence: And have a lot of coler. The clothes have a lot of kinds.
correct_sentence: The sweaters are good and have a lot of colors. There are a lot of kinds of clothes.
error: coler. The clothes have
correction: colors. There are
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Spelling Error: According to English spelling rules and the sentence meaning, the intention here is to express the plural form of "color"; the original word 〈coler〉 is a spelling error and should be changed to 『colors』.; ② Sentence Structure Error: According to English expression habits, the "There be" structure is commonly used to describe existence. The original sentence 〈The clothes have a lot of kinds〉 does not follow this rule, constituting a sentence structure error. It needs to be changed to 『There are a lot of kinds of clothes』 to conform to English expression habits.

error_sentence: The clothes have a lot of kinds.
correct_sentence: There are a lot of kinds of clothes.
correction: of clothes
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Sentence Structure Error: According to English grammar rules and expression habits, "a lot of kinds" needs the structure "of + noun" to specify the object being referred to, making the meaning complete and clear. In the original sentence, "kinds" does not specify what kind of things, leading to ambiguity and an incomplete structure. Adding 『of clothes』 at the end is necessary to clarify "kinds of clothes," making the sentence structure complete and accurately conveying the meaning "There are many kinds of clothes."; ② Determiner Error: According to English grammar rules, when using "kinds" to indicate types, the structure "of + noun" is needed to specify the object. The original sentence lacks the necessary determiner 〈of〉 to connect 〈kinds〉 and 〈clothes〉, leading to ambiguity and an incomplete structure. Therefore, 『of clothes』 needs to be added to specify "kinds of clothes," ensuring the sentence structure is complete and the meaning is clear.

error_sentence: The sweater only sell 30 yuan.
correct_sentence: The sweaters only sell for 30 yuan.
error: sweater
correction: sweaters
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: According to English grammar rules, when a sentence implies multiple objects, the noun should be in plural form. Based on the context, the store sells more than one sweater, so 〈sweater〉 should represent multiple objects. The original sentence uses the singular form 〈sweater〉, which is a noun number error. Therefore, 〈sweater〉 needs to be changed to 『sweaters』 to match the plural nature of the store's merchandise category.

error_sentence: The sweater only sell 30 yuan.
correct_sentence: The sweaters only sell for 30 yuan.
correction: for
error_type: Preposition Error
error_severity: 2
error_description: ① Preposition Error: According to English collocation rules, when the verb 〈sell〉 means "to be sold at a price," it needs to be used with the preposition 〈for〉 followed by the price. In the original sentence, the price "30 yuan" directly follows 〈sell〉, missing the necessary preposition 『for』, which does not conform to the fixed phrase 『sell for + price』. Therefore, 『for』 needs to be added after 〈sell〉 to make the sentence conform to English expression habits.

error_sentence: The shirt only sell 20 yuan.
correct_sentence: The shirts only sell for 25 yuan.
error: shirt
correction: shirts
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: According to English grammar rules, when a sentence implies multiple objects, the noun should be in plural form. Based on the context, the store sells more than one shirt, so 〈shirt〉 should represent multiple objects. The original sentence uses the singular form 〈shirt〉, which is a noun number error. It needs to be changed to 『shirts』 to match the plural nature of the store's merchandise category.

error_sentence: The shirt only sell 20 yuan.
correct_sentence: The shirts only sell for 25 yuan.
error: 20
correction: for 25
error_type: Number Error
error_severity: 2
error_description: ① Preposition Error: According to English expression habits, the verb 〈sell〉 needs the preposition 『for』 to indicate the price of the goods; the original sentence is missing the preposition 『for』, so 『for』 needs to be added to make the sentence semantically complete.; ② Number Error: According to the prompt information, the price of the shirts should be 25 yuan; the number 〈20〉 in the original sentence does not match the actual price and needs to be changed to 『25』.

error_sentence: The bloues only sell 25 yuan.
correct_sentence: The blouses only sell for 25 yuan.
error: bloues
correction: blouses
error_type: Spelling Error
error_severity: 2
error_description: ① Spelling Error: According to the sentence meaning, the intention here is to express "blouses"; therefore, 〈bloues〉 is a misspelling of 『blouses』 and needs to be changed to 『blouses』 to make the sentence meaning clear.

error_sentence: The bloues only sell 25 yuan.
correct_sentence: The blouses only sell for 25 yuan.
correction: for
error_type: Preposition Error
error_severity: 2
error_description: ① Preposition Error: According to English grammar rules, the verb 〈sell〉 requires the preposition 『for』 to indicate the price; the original sentence lacks the preposition. Therefore, 『for』 needs to be added to conform to the fixed phrase 『sell for + price』.

error_sentence: The big bag only sell 35 yuan.
correct_sentence: The big bags only sell for 35 yuan.
error: bag
correction: bags
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: According to English grammar rules, when a sentence implies multiple objects, the noun should be in plural form. Based on the context, the store sells more than one big bag; the original sentence uses the singular form 〈bag〉, which should be changed to the plural form 『bags』 to match the plural nature of the merchandise category.

error_sentence: The big bag only sell 35 yuan.
correct_sentence: The big bags only sell for 35 yuan.
correction: for
error_type: Preposition Error
error_severity: 2
error_description: ① Preposition Error: According to English grammar rules, the verb 〈sell〉 requires the preposition 『for』 to indicate the price; the original sentence lacks the preposition. Therefore, 『for』 needs to be added to make the sentence semantically complete.

error_sentence: The handbag only sell 20 yuan.
correct_sentence: The handbags only sell for 20 yuan.
error: handbag
correction: handbags
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: According to English grammar rules, when a sentence implies multiple objects, the noun should be in plural form. Based on the context, the store sells more than one handbag; the original sentence uses the singular form 〈handbag〉, which should be changed to the plural form 『handbags』 to match the plural nature of the merchandise category.

error_sentence: The handbag only sell 20 yuan.
correct_sentence: The handbags only sell for 20 yuan.
correction: for
error_type: Preposition Error
error_severity: 2
error_description: ① Preposition Error: According to English grammar rules, the verb 〈sell〉 requires the preposition 『for』 to indicate the price; the original sentence lacks the preposition. Therefore, 『for』 needs to be added to conform to the fixed phrase.

error_sentence: The store have got a lot of skirts and shoes.
correct_sentence: The store has got a lot of skirts and shoes.
error: have
correction: has
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: ① Subject-Verb Agreement Error: According to English grammar rules, when the subject is third-person singular, the verb must take the corresponding singular form. The subject in the original sentence, 〈The store〉, is third-person singular, so the verb 〈have〉 needs to be changed to the singular form 『has』 to maintain subject-verb agreement.