Writing prompt: Written Expression.
Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay.
Based on the information provided by Tom below, and referring to the picture, describe Tom's activities for next weekend using the simple future tense:
Writing hints:
On Saturday: do his homework 9:30; watch TV 11:00; go to the park in the afternoon
On Sunday: clean his room 10:00; play basketball 14:00; have a bath 18:00

Student essay:
This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.

Corrected essay:
This is Tom. At 9:30 a.m. on Saturday, he will do his homework. After that, he will watch TV at 11:00 a.m. In the afternoon, he is going to the park. On Sunday, he will clean his room at 10:00 a.m., and then he is going to play basketball at 2:00 p.m. In the evening, he is going to have a bath.

Error analysis:
error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: This is Tom. At 9:30 a.m. on Saturday, he will do his homework.
error: , at saturday
correction: . At
error_type: Punctuation Error
error_severity: 2
error_description: ① Punctuation Error: According to English sentence structure rules, the independent clauses 〈This is Tom〉 and 〈at saturday 9:30 a.m., he will do his homework〉 cannot be joined by a comma; they must be separated by a period into two independent sentences or connected with an appropriate conjunction. Therefore, the comma needs to be changed to 『.』 to comply with English punctuation usage norms; ② Case Error: According to English writing conventions, the day name 〈saturday〉, being a proper noun, must be capitalized; therefore, it needs to be corrected to 『Saturday』 to meet the writing standard for proper nouns.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: At 9:30 a.m. on Saturday, he will do his homework.
correction: on Saturday
error_type: Word Order Error
error_severity: 4
error_description: ① Word Order Error: According to English time expression conventions, the order of time adverbials should follow the principle of 'specific time + specific date'. The order in the original sentence 〈at saturday 9:30 a.m.〉 needs to be adjusted to 『At 9:30 a.m. on Saturday』 to conform to English time expression conventions; ② Preposition Error: According to English fixed expressions, 〈at saturday〉 does not conform to idiomatic usage. The correct phrase should be 『on Saturday』, adding the preposition 『on』 and combining it with the day of the week to form a standard time adverbial expression.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: At 9:30 a.m. on Saturday, he will do his homework. After that, he will watch TV at 11:00 a.m.
error: , after
correction: . After
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English grammar rules, the independent clauses 〈he will do his homework〉 and 〈after that...〉 cannot be joined merely by a comma; a period must be used to separate them to avoid a comma splice error, hence changing the comma to a period and splitting the sentence; ② Case Error: According to English writing rules, the first word of a sentence 〈after〉 must be capitalized; therefore, it is corrected to 『After』 to comply with the requirement for capitalization at the beginning of a sentence.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: In the afternoon, he is going to the park.
error: , in
correction: In
error_type: Punctuation Error
error_severity: 2
error_description: ① Punctuation Error: According to English compound sentence writing conventions, the comma-connected clauses 〈he will watch TV at 11:00 a.m.〉 and 〈in the afternoon〉 are two complete independent clauses and must be separated by a period into two simple sentences; therefore, the comma is changed to a period and the sentence is split to meet English sentence structure requirements; ② Case Error: According to English paragraph writing conventions, the first word of a new sentence 〈in〉 must be capitalized; therefore, it is corrected to 『In』 to comply with the English standard for capitalization at the beginning of a sentence.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: In the afternoon, he is going to the park. On Sunday, he will clean his room at 10:00 a.m., and then he is going to play basketball at 2:00 p.m. In the evening, he is going to have a bath.
error: On sunday
correction: . On Sunday
error_type: Punctuation Error
error_severity: 2
error_description: ① Punctuation Error: According to English paragraph structure conventions, the descriptions of Saturday's activities and Sunday's activities should be treated as independent sentences; therefore, the connecting comma needs to be changed to a period for separation to ensure semantic clarity and sentence structure correctness; ② Case Error: According to English writing rules, the day name 〈sunday〉, being a proper noun, must be capitalized; therefore, it is corrected to the standard form 『Sunday』 to comply with English time expression standards.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: On Sunday, he will clean his room at 10:00 a.m., and then he is going to play basketball at 2:00 p.m. In the evening, he is going to have a bath.
correction: and
error_type: Conjunction Error
error_severity: 3
error_description: Conjunction Error: According to English parallel structure writing conventions, when expressing consecutive actions 〈clean his room〉 and 〈play basketball〉, the coordinating conjunction 『and』 must be used for connection. Therefore, the conjunction 『and』 is added to form a correct parallel structure, making the sentence's logical relationship complete and clear.

error_sentence: This is Tom, at saturday 9:30 a.m., he will do his homework, after that, he will watch TV at 11:00 a.m., in the afternoon, he is going to the park On sunday, he will clean his room at 10:00 a.m., then he is going to play baskeball at 14:00 p.m. At evening, he is going to have a bath.
correct_sentence: On Sunday, he will clean his room at 10:00 a.m., and then he is going to play basketball at 2:00 p.m. In the evening, he is going to have a bath.
error: baskeball at 14:00 p.m. At
correction: basketball at 2:00 p.m. In the
error_type: Preposition Error
error_severity: 4
error_description: ① Spelling Error: According to English word spelling conventions, the intended meaning here is 'basketball', thus 〈baskeball〉 contains a spelling error; the correct spelling should be 『basketball』, requiring correction to ensure lexical accuracy; ② Number Error: According to English time expression conventions, 〈14:00 p.m.〉 includes both 24-hour and 12-hour format indicators, which is a mixed format error. The correct expression should be the 12-hour format 『2:00 p.m.』 to comply with standard time writing conventions; ③ Preposition Error: According to English fixed expressions, 〈At evening〉 does not conform to idiomatic usage. The correct phrase should be 『In the evening』, using the preposition 『in』 and the article 『the』 to form a standard time adverbial expression.