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:
Welcome to our clothes store. We have different clothes, and the clothes are very free. All kind of color sweater are only 30 yuan. Shorts are only 20 yuan. Jackets are only25 yuan . Big bags are 35yuan. Small bags are 20yuan. We also have more beautiful shoes and skirts.

Corrected essay:
Welcome to our clothes store. We have different clothes, and the clothes are very cheap. Sweaters in all kinds of colors are only 30 yuan. Shorts are only 20 yuan. Jackets are only 25 yuan. Big bags are 35 yuan. Small bags are 20 yuan. We also have many beautiful shoes and skirts.

Error analysis:
error_sentence: We have different clothes, and the clothes are very free. All kind of color sweater are only 30 yuan.
correct_sentence: We have different clothes, and the clothes are very cheap. Sweaters in all kinds of colors are only 30 yuan.
error: free. All kind of color sweater
correction: cheap. Sweaters in all kinds of colors
error_type: Word Order Error
error_severity: 5
error_description: ① Adjective Error: According to the sentence meaning, 〈free〉 means 'at no cost', which does not fit the context describing discounted merchandise; it should be changed to the adjective 『cheap』 meaning 'low in price' to accurately convey the promotional information; ② Word Order Error: Based on the English principle of post-modification, the pre-modifying structure 〈All kind of color sweater〉 does not conform to English expression habits; it should be adjusted to the post-modifying structure 『Sweaters in all kinds of colors』, where the prepositional phrase 'in all kinds of colors' acts as a post-modifier for 'sweaters'; ③ Noun Number Error: According to English grammar rules, when generally referring to a type of product, the countable noun 〈sweater〉 should be in the plural form 『sweaters』. 〈All kind of color〉 has two noun number issues: first, 'kind', as a countable noun after 'all', should be changed to the plural form 『kinds』; second, 〈color〉, as a countable noun after 〈of〉, should also be changed to the plural form 『colors』, forming the English fixed phrase 『all kinds of colors』 meaning 'various colors'; ④ Preposition Error: In English, 'in' is commonly used when describing color to indicate that an object or environment is presented in a certain color; therefore, when expressing 'sweaters of all kinds of colors', 『in』 needs to be added before 『all kinds of colors』.

error_sentence: Jackets are only25 yuan .
correct_sentence: Jackets are only 25 yuan.
error: only25
correction: only 25
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, a space is required between a number and a currency unit; therefore, the run-on form 〈only25〉 is changed to the standard format 『only 25』, adding a space between the number '25' and the currency unit (e.g., yuan, dollars, pounds) to comply with international typesetting rules.

error_sentence: Big bags are 35yuan.
correct_sentence: Big bags are 35 yuan.
error: 35yuan
correction: 35 yuan
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, a space is required between a number and a currency unit; therefore, the run-on form 〈35yuan〉 is changed to the standard format 『35 yuan』, adding a space between the number '35' and the currency unit (e.g., yuan, dollars, pounds) to comply with international typesetting rules.

error_sentence: Small bags are 20yuan.
correct_sentence: Small bags are 20 yuan.
error: 20yuan
correction: 20 yuan
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, a space is required between a number and a currency unit; therefore, the run-on form 〈20yuan〉 is changed to the standard format 『20 yuan』, adding a space between the number '20' and the currency unit to comply with international typesetting rules.

error_sentence: We also have more beautiful shoes and skirts.
correct_sentence: We also have many beautiful shoes and skirts.
error: more
correction: many
error_type: PoS Confusion Error
error_severity: 2
error_description: PoS Confusion Error: According to the sentence meaning, the basic meaning of 'a large quantity' needs to be expressed here, not a comparative meaning; therefore, 〈more〉 (meaning 'a greater quantity', implying comparison) does not fit the context. The comparative adjective 〈more〉 is changed to the positive adjective 『many』, as it is used to directly modify the plural countable nouns 〈shoes and skirts〉 to meet the semantic requirement.