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:
Linda is helping mother do housework. Grandparent are watching TV. Brother is playing computer games. Mother is cooking in the kinchen. Sister is listening to the radio.

Corrected essay:
Linda is helping her mother do housework. Grandparents are watching TV. Her brother is playing computer games. Her mother is cooking in the kitchen. Her sister is listening to the radio.

Error analysis:
error_sentence: Linda is helping mother do housework.
correct_sentence: Linda is helping her mother do housework.
correction: her
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: According to English grammar rules, when a noun indicating a family relationship like 〈mother〉 is used alone, its possessive relationship needs to be specified. Based on the context referring to Linda's mother, the third-person feminine singular possessive pronoun 『her』 should be added to form a complete noun phrase, thus correcting 〈mother〉 to 『her mother』 to clearly express the semantic relationship of 'Linda's mother'.
error_sentence: Grandparent are watching TV.
correct_sentence: Grandparents are watching TV.
error: Grandparent
correction: Grandparents
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to the context, the prompt clearly refers to two grandparents, but 〈Grandparent〉 is singular, which does not match the quantity indicated. According to English noun pluralization rules, the word should be changed to its plural form 『Grandparents』 by adding the suffix '-s', thus accurately reflecting the situation of 'two grandparents'.
error_sentence: Brother is playing computer games.
correct_sentence: Her brother is playing computer games.
error: Brother
correction: Her brother
error_type: Pronoun Error
error_severity: 2
error_description: Pronoun Error: According to English grammar rules, when a noun indicating a family relationship like 〈Brother〉 is used alone, its possessive relationship needs to be specified. Based on the context referring to Linda's brother, the third-person feminine singular possessive pronoun 『her』 should be added to form a complete noun phrase, thus correcting 〈Brother〉 to 『her brother』 to clearly express the semantic relationship of 'Linda's brother'.
error_sentence: Mother is cooking in the kinchen.
correct_sentence: Her mother is cooking in the kitchen.
error: Mother
correction: Her mother
error_type: Pronoun Error
error_severity: 2
error_description: Pronoun Error: According to English grammar rules, when a noun indicating a family relationship like 〈mother〉 is used alone, its possessive relationship needs to be specified. Based on the context referring to Linda's mother, the third-person feminine singular possessive pronoun 『her』 should be added to form a complete noun phrase, thus correcting 〈mother〉 to 『her mother』 to clearly express the semantic relationship of 'Linda's mother'.
error_sentence: Mother is cooking in the kinchen. Sister is listening to the radio.
correct_sentence: Her mother is cooking in the kitchen. Her sister is listening to the radio.
error: kinchen. Sister
correction: kitchen. Her sister
error_type: Pronoun Error
error_severity: 3
error_description: ① Spelling Error: According to English vocabulary norms, 〈kinchen〉 is an incorrect spelling; the correct spelling for the noun meaning 'kitchen' is 『kitchen』, requiring the letter order to be adjusted to 『kitchen』 to conform to standard English spelling; ② Pronoun Error: According to English grammar rules, when a family relationship noun like 〈Sister〉 is used alone, a possessive pronoun needs to be added to clarify possession. Based on the context, the third-person feminine singular possessive pronoun 『Her』 should be added, forming the complete noun phrase 『Her sister』, to accurately express the possessive relationship 'her sister'.