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:
Saturday is coming, and Sunday too. Tom is thinking what to do, he write on the paper: Saturday: do his homework on 9:30. Watch TV on 11:00. Go to the park in the afternoon. Sunday: clean my room in 10:00. Play basketball in 14:00. Have a bath in 18:00.

Corrected essay:
Saturday is coming, and Sunday too. Tom is thinking about what to do. He has written on the paper. On Saturday, he will do his homework at 9:30. He will watch TV at 11:00. He will go to the park in the afternoon. On Sunday, he will clean his room at 10:00. He will play basketball at 14:00 and will have a bath at 18:00.

Error analysis:
error_sentence: Tom is thinking what to do, he write on the paper: Saturday: do his homework on 9:30.
correct_sentence: Tom is thinking about what to do.
correction: about
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to the English fixed phrase, the expression for 'consider doing something' is 'think about doing something'; here 〈what to do〉 is equivalent to something, and a preposition is missing. Therefore, the preposition 『about』 needs to be added before 〈what〉 to conform to the English fixed phrase.

error_sentence: Tom is thinking what to do, he write on the paper: Saturday: do his homework on 9:30.
correct_sentence: Tom is thinking about what to do. He has written on the paper.
error: , he write
correction: . He has written
error_type: Verb Tense Error
error_severity: 5
error_description: ① Verb Tense Error: Based on the context, the present perfect tense is needed here to indicate a completed action, so 〈write〉 should be changed to 『has written』; ② Punctuation Error: 〈he has written on the paper〉 and the preceding clause are two independent main clauses with different verb tenses and belonging to different idea groups. According to English syntax rules, these two sentences should be separated by a period to start a new sentence; ③ Case Error: After the preceding sentence 'Tom is thinking about what to do.' ends with a period, 〈he〉 becomes the first word of the new sentence, so its first letter must be capitalized. Therefore, 〈, he〉 needs to be changed to 『. He』 to comply with English syntax rules.

error_sentence: Tom is thinking what to do, he write on the paper: Saturday: do his homework on 9:30.
correct_sentence: He has written on the paper. On Saturday, he will do his homework at 9:30.
error: : Saturday:
correction: . On Saturday, he will
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Punctuation Error: The content written on the paper does not need to be introduced by a colon, so a period should end the sentence after 〈on the paper〉. The original 『:』 needs to be replaced with a period 『.』 to separate the sentences; ② Preposition Error: According to the meaning, 〈Saturday〉 at the beginning of the sentence should function as a time adverbial at the start of the sentence, so 『On』 needs to be added before 〈Saturday〉 to form a complete prepositional phrase as a time adverbial; A time adverbial at the beginning of a sentence needs to be separated from the following clause by a comma, so 〈Saturday:〉 needs to be changed to 『On Saturday,』; ③ Sentence Structure Error: Based on the context, this describes Tom's planned activities for Saturday from a third-person perspective, requiring the simple future tense. Therefore, the sentence starting with 〈do his homework〉 lacks a subject and auxiliary verb, requiring the addition of 『He will』 before 〈do〉 to conform to English sentence structure norms.

error_sentence: Tom is thinking what to do, he write on the paper: Saturday: do his homework on 9:30.
correct_sentence: On Saturday, he will do his homework at 9:30.
error: on
correction: at
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English grammar rules, specific points in time should be modified by the preposition 『at』. Therefore, there is a preposition error here, and 〈on 9:30〉 needs to be changed to 『at 9:30』 to comply with English grammar rules.

error_sentence: Watch TV on 11:00.
correct_sentence: He will watch TV at 11:00.
error: Watch TV on
correction: He will watch TV at
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Sentence Structure Error: The original sentence 〈Watch TV on 11:00.〉 lacks a subject, constituting a sentence structure error; based on the context, the subject 『He』 should be added; ② Verb Tense Error: Based on the context, this describes Tom's planned activities for Saturday from a third-person perspective, requiring the simple future tense, so it should be modified to 『He will watch TV』 to conform to English sentence structure norms; ③ Preposition Error: According to English grammar rules, specific points in time should be modified by the preposition 『at』. Therefore, there is a preposition error here, and 〈on 11:00〉 needs to be changed to 『at 11:00』 to comply with English grammar rules.

error_sentence: Go to the park in the afternoon.
correct_sentence: He will go to the park in the afternoon.
error: Go
correction: He will go
error_type: Sentence Structure Error
error_severity: 4
error_description: Sentence Structure Error: Based on the context, this describes Tom's planned activities for Saturday from a third-person perspective, requiring the simple future tense. Therefore, the sentence structure here is incomplete; the subject and auxiliary verb need to be added before the verb 〈Go to the park〉 to form the complete sentence 『He will go to the park』 to conform to English sentence structure norms.

error_sentence: Sunday: clean my room in 10:00.
correct_sentence: On Sunday, he will clean his room at 10:00.
error: Sunday: clean my room in
correction: On Sunday, he will clean his room at
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Preposition Error: According to the meaning, 〈Sunday〉 at the beginning of the sentence should function as a time adverbial at the start of the sentence, so 『On』 needs to be added before 〈Sunday〉 to form a complete prepositional phrase as a time adverbial; A time adverbial at the beginning of a sentence needs to be separated from the following clause by a comma, so 〈Sunday:〉 needs to be changed to 『On Sunday,』; ② Sentence Structure Error: The original sentence 〈clean my room in 10:00.〉 lacks a subject; based on the context, the subject 『he』 should be added; ③ Verb Tense Error: According to the prompt, this describes activities for the next weekend, so the simple future tense should be used; the sentence should be modified to 『he will clean his room』; ④ Pronoun Error: According to the meaning, this refers to 'Tom cleaning his room', so the possessive pronoun 〈my〉 needs to be changed to 『his』 to fit the meaning; ⑤ Preposition Error: According to English grammar rules, specific points in time should be modified by the preposition 『at』. Therefore, there is a preposition error here, and 〈in〉 needs to be changed to 『at』 to comply with English grammar rules.

error_sentence: Play basketball in 14:00. Have a bath in 18:00.
correct_sentence: He will play basketball at 14:00 and will have a bath at 18:00.
error: Play basketball in 14:00. Have
correction: He will play basketball at 14:00 and will have
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Sentence Structure Error: Based on the context describing Tom's planned activities for the next weekend from a third-person perspective, the simple future tense is required. Therefore, the subject and auxiliary verb need to be added before 〈Play〉, changing it to 『He will play』 to conform to English sentence structure norms; ② Verb Tense Error: According to the prompt, this describes activities for the next weekend, so the simple future tense should be used; the sentence should be modified to 『He will play basketball at 14:00』; ③ Preposition Error: According to English grammar rules, specific points in time should be modified by the preposition 『at』. Therefore, there is a preposition error here, and 〈in〉 needs to be changed to 『at』 to comply with English grammar rules; ④ Conjunction Error: In a sentence, two parallel actions performed by the same subject can be connected by 'and', omitting the repeated subject but retaining the auxiliary and main verb. According to the original sentence's meaning and the required simple future tense, 〈. Have〉 needs to be changed to 『 and will have』 to conform to English grammar and context.

error_sentence: Have a bath in 18:00.
correct_sentence: He will play basketball at 14:00 and will have a bath at 18:00.
error: in
correction: at
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English grammar rules, specific points in time should be modified by the preposition 『at』. Therefore, there is a preposition error here, and 〈in〉 needs to be changed to 『at』 to comply with English grammar rules.