Writing prompt: Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay. It is currently 7 PM. Based on the information provided by Linda below, use the present continuous tense to describe what Linda and her family are doing. Writing hints: Linda: help mother do housework; grandparents: watch TV; brother: play computer games; mother: cook; sister: listen to the radio.

Student essay:
In the Sunday. What linda make. Look! She is helping mother do homsework. She 's grandprandparents are watching TV. She's brother is playing computer games. She's mother make cook. She's sister is listening to the radio

Corrected essay:
On Sunday, what is Linda doing? Look! She is helping her mother do housework. Her grandparents are watching TV. Her brother is playing computer games. Her mother is cooking. Her sister is listening to the radio.

Error analysis:
error_sentence: In the Sunday. What linda make.
correct_sentence: On Sunday, what is Linda doing?
error: In the Sunday. What linda make.
correction: On Sunday, what is Linda doing?
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Preposition Error: According to English usage, 〈on〉 is needed for specific days; the 〈In〉 in 〈In the Sunday〉 is incorrect and should be changed to 『On Sunday』 to conform to standard usage; ② Determiner Error: According to English grammar rules, the day of the week 〈Sunday〉 does not require the definite article 〈the〉; the original sentence has an extra 〈the〉 which needs to be deleted; ③ Sentence Structure Error: According to English grammar rules, wh-questions are formed by wh-word + auxiliary + subject + verb; the original sentence 〈What linda make.〉 has incorrect word order and missing components, and needs to be restructured as 『what is Linda doing?』 to ensure clarity and correct structure; ④ Verb Choice Error: According to the sentence meaning, this is asking about an ongoing action; 〈make〉 (to produce) does not fit the context and needs to be changed to 『is doing』 to express the ongoing action; ⑤ Case Error: According to English writing conventions, the proper noun 〈linda〉 (a name) should be capitalized; 〈linda〉 needs to be changed to 『Linda』.

error_sentence: She is helping mother do homsework.
correct_sentence: She is helping her mother do housework.
correction: her
error_type: Pronoun Error
error_severity: 2
error_description: ① Pronoun Error: According to English grammar rules, to express possession, a possessive adjective is usually needed before a noun. The noun 〈mother〉 in the original sentence lacks a possessive determiner, making the relationship unclear, which is a pronoun error. Therefore, 『her』 needs to be added to clarify possession, changing it to 『her mother』, making the sentence clearer and more precise.

error_sentence: She is helping mother do homsework. She 's grandprandparents are watching TV.
correct_sentence: She is helping her mother do housework. Her grandparents are watching TV.
error: homsework. She 's grandprandparents
correction: housework. Her grandparents
error_type: Pronoun Error
error_severity: 3
error_description: ① Spelling Error: Based on the meaning, the intention is to express "housework", so 〈homsework〉 is a misspelling of 『housework』 and needs to be corrected to 『housework』 for clarity; based on the meaning, the intention is to express "grandparents", so 〈grandprandparents〉 is a misspelling of 『grandparents』 and needs to be corrected to 『grandparents』 for clarity; ② Pronoun Error: According to the rules of English possessive pronouns, "She's" is the contraction of "She is" and cannot express possession. The original sentence needs to show possession, thus 〈She’s〉 is used incorrectly as a pronoun and needs to be changed to the possessive pronoun 『Her』 to clarify the relationship.

error_sentence: She's brother is playing computer games.
correct_sentence: Her brother is playing computer games.
error: She's
correction: Her
error_type: Pronoun Error
error_severity: 3
error_description: ① Pronoun Error: According to English grammar rules, possessive pronouns are used to indicate possession. In the original sentence, 〈She's〉 is the contraction of 〈She is〉 and cannot express possession, thus failing to correctly modify the noun 〈brother〉; this is a pronoun error. 〈She's〉 needs to be changed to the possessive pronoun 『Her』 to clearly indicate “her brother”, conforming to grammar rules and sentence meaning.

error_sentence: She's mother make cook. She's sister is listening to the radio
correct_sentence: Her mother is cooking. Her sister is listening to the radio.
error: She's mother make cook. She's
correction: Her mother is cooking. Her
error_type: Verb Choice Error
error_severity: 4
error_description: ① Pronoun Error: According to the usage rules of English possessive pronouns, 〈She's〉 is the contraction of 〈She is〉 and cannot express possession. A possessive pronoun is needed here to modify the noun; the use of 〈She's〉 in the original sentence is incorrect, which is a pronoun error, and should be changed to 『Her mother is cooking. Her』; ② Verb Choice Error: Based on the sentence meaning, the action of “cooking” needs to be expressed; 〈make cook〉 is semantically ambiguous and does not conform to English usage conventions. The correct verb expression should be chosen, which is a verb choice error; change it to 『is cooking』 to accurately express the mother's ongoing action of cooking; ③ Verb Tense Error: According to English grammar rules, the present continuous tense (be + present participle) is used to describe actions currently in progress. The original sentence uses the base form 〈make cook〉, which cannot accurately express an ongoing action; this is a verb tense error and should be changed to 『is cooking』.

error_sentence: She's sister is listening to the radio
correct_sentence: Her sister is listening to the radio.
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: ① Punctuation Error: According to English writing conventions, a declarative sentence must end with a period. The original sentence lacks a period at the end, which is a punctuation error; a 『.』 needs to be added after 〈radio〉 to comply with English writing standards.