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:
On Saturday, Tom is going to do his homework at 9:30, then, he will watch TV at11:00, in the afternoon, he is going to the park. Next day, he will clean his room at10:00, he will play basketball at 14:00. Then he is going to have a bath at18:00.

Corrected essay:
On Saturday, Tom is going to do his homework at 9:30 a.m., then he will watch TV at 11:00 a.m. In the afternoon, he is going to the park. The next day, he will clean his room at 10:00 a.m., and he will play basketball at 14:00. Then he is going to have a bath at 18:00.

Error analysis:
error_sentence: On Saturday, Tom is going to do his homework at 9:30, then, he will watch TV at11:00, in the afternoon, he is going to the park.
correct_sentence: On Saturday, Tom is going to do his homework at 9:30 a.m., then he will watch TV at 11:00 a.m.
correction: a.m.
error_type: Noun Error
error_severity: 2
error_description: ① Noun Error: According to English expression norms, time expressions require 'a.m.' or 'p.m.' to indicate the specific time period. The original sentence 〈9:30〉 does not specify the time period; based on the context, it is '9:30 in the morning', so 『a.m.』 is added to form the standard time format 『9:30 a.m.』; ② Noun Error: According to English expression norms, time expressions require 'a.m.' or 'p.m.' to indicate the specific time period. The original sentence 〈11:00〉 does not specify the time period; based on the context, it is 'eleven in the morning', so 『a.m.』 is added to form the standard time format 『11:00 a.m.』.

error_sentence: On Saturday, Tom is going to do his homework at 9:30, then, he will watch TV at11:00, in the afternoon, he is going to the park.
correct_sentence: On Saturday, Tom is going to do his homework at 9:30 a.m., then he will watch TV at 11:00 a.m.
error: ,
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: The sentences "Tom is going to do his homework at 9:30" and "he will watch TV at 11:00" are two parallel clauses; when the adverb 〈then〉 connects them, a comma is not needed. Therefore, the redundant comma in 〈then,〉 is deleted.

error_sentence: On Saturday, Tom is going to do his homework at 9:30, then, he will watch TV at11:00, in the afternoon, he is going to the park.
correct_sentence: On Saturday, Tom is going to do his homework at 9:30 a.m., then he will watch TV at 11:00 a.m. In the afternoon, he is going to the park.
error: at11:00, in
correction: at 11:00 a.m. In
error_type: Noun Error
error_severity: 4
error_description: ① Space Error: 〈at11:00〉 consists of two words and requires a space in between, becoming 『at 11:00』; ② Noun Error: English time expressions require adding 'a.m.' or 'p.m.' after the time to specify morning or afternoon; here, according to the prompt, 『a.m.』 needs to be added after "11:00" to indicate 11 a.m.; ③ Punctuation Error: Based on the sentence structure, the previous clause is complete and requires a period at the end to terminate the sentence, so a period is added after 'a.m.'; ④ Case Error: 『In』 as the first word of the new sentence needs to be capitalized.

error_sentence: Next day, he will clean his room at10:00, he will play basketball at 14:00.
correct_sentence: The next day, he will clean his room at 10:00 a.m., and he will play basketball at 14:00.
error: Next
correction: The next
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to fixed English expressions, the phrase "next day" requires the article "the" before it. The original sentence omitted the article, causing a grammatical error; 『The』 is added to form the complete time adverbial.

error_sentence: Next day, he will clean his room at10:00, he will play basketball at 14:00.
correct_sentence: The next day, he will clean his room at 10:00 a.m., and he will play basketball at 14:00.
error: at10:00,
correction: at 10:00 a.m., and
error_type: Conjunction Error
error_severity: 4
error_description: ① Space Error: 〈at10:00〉 consists of two words and requires a space in between, becoming 『at 10:00』; ② Noun Error: English time expressions require adding 'a.m.' or 'p.m.' after the time to specify morning or afternoon; here, according to the prompt, 『a.m.』 needs to be added after "10:00" to indicate 10 a.m.; ③ Conjunction Error: The clauses "he will clean his room at 10:00 a.m." and "he will play basketball at 14:00." require the conjunction 『and』 between them to connect two independent clauses, so the conjunction 『and』 is added.

error_sentence: Then he is going to have a bath at18:00.
correct_sentence: Then he is going to have a bath at 18:00.
error: at18:00
correction: at 18:00
error_type: Space Error
error_severity: 1
error_description: Space Error: 〈at18:00〉 consists of two words and requires a space in between, becoming 『at 18:00』.