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:
At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.

Corrected essay:
At 7 pm, Linda and her family are all at home. Linda is helping her mother do housework. Her grandparents are watching TV. Her brother is playing computer games. Her mother is cooking, and her sister is listening to the radio.

Error analysis:
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: At 7 pm, Linda and her family are all at home.
error: am
correction: pm
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to English time expression norms, 〈am〉 denotes the morning period, while the prompt clearly states the event occurs at 7 PM, which falls into the 『pm』 period. Therefore, the incorrect time abbreviation 〈am〉 is corrected to 『pm』 to fully align with the intended meaning.
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: At 7 pm, Linda and her family are all at home.
error: at all home,
correction: all at home.
error_type: Word Order Error
error_severity: 3
error_description: Word Order Error: According to English adverb modification rules, the adverb 〈all〉 as an adverb of degree should be placed after the linking verb 〈are〉 to modify the entire predicate, thus adjusting the incorrect word order 〈at all home〉 to the correct sequence 『all at home』 to comply with English grammatical norms.
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: Linda is helping her mother do housework. Her grandparents are watching TV.
error: , her grandparents wre
correction: . Her grandparents are
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English grammar rules, two independent clauses cannot be joined solely by a comma; a period is needed to separate them and avoid a run-on sentence. Therefore, the incorrect comma 〈,〉 is changed to a period 『.』, and the first letter of the first word of the sentence must be capitalized, hence 〈her grandparents〉 is changed to 『Her grandparents』; ② Spelling Error: According to the conjugation rules of the verb 'be', the subject 〈her grandparents〉 is plural, and the correct form of the predicate verb should be 『are』, thus correcting the misspelling 〈wre〉 to 『are』.
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: Her grandparents are watching TV.
error: ,
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: The independent clause 〈Her brother is playing computer games〉 is incorrectly connected to the preceding sentence with a comma; a period is required for separation. Therefore, the comma is changed to 『.』 for correct sentence division.
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: Her brother is playing computer games.
error: ,
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, joining the independent clause 〈Her brother is playing computer games〉 to the preceding sentence with only a comma constitutes a comma splice error; a stronger punctuation mark like a period or semicolon is required for separation. Therefore, the incorrectly used comma is changed to a period 『.』 to make the sentence structure conform to standards.
error_sentence: At 7am, Linda and her family are at all home, Linda is helping her mother do housework, her grandparents wre watching TV, Her brother is playing computer games, Her mother is cooking, Her sister is listening to the radio.
correct_sentence: Her mother is cooking, and her sister is listening to the radio.
error: Her
correction: and her
error_type: Conjunction Error
error_severity: 3
error_description: Conjunction Error: A conjunction is missing between the parallel actions; therefore, 『and』 is added between 〈Her mother is cooking〉 and 〈her sister is listening to the radio〉 to make the sentence structure correct.