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 will do his homework at 9:30a.m. At 11:00 a. m, he is going to watch TV. And in the afternoon, He is going to the park. On Sunday, he will clean room by himself at 10:00. In the afternoon, he is going to play basketball with friends at 14:00 a.m. After the daytime, he is going to have a bath at 18:00p.m.

Corrected essay:
On Saturday, Tom will do his homework at 9:30 a.m. At 11:00 a.m., he is going to watch TV. And in the afternoon, he is going to the park. On Sunday, he will clean his room by himself at 10:00 a.m. In the afternoon, he is going to play basketball with friends at 14:00. After the daytime, he is going to have a bath at 18:00.

Error analysis:
error_sentence: On Saturday, Tom will do his homework at 9:30a.m.
correct_sentence: On Saturday, Tom will do his homework at 9:30 a.m.
error: 9:30a.m.
correction: 9:30 a.m.
error_type: Space Error
error_severity: 1
error_description: Space Error: When expressing time, according to English expression habits and writing conventions, there should be a space between the number and the letters. In 〈9:30a.m.〉, the necessary space between the number and the time unit is missing. According to standard format, it should be changed to 『9:30 a.m.』, adding a space between 〈30〉 and 〈a.m.〉.

error_sentence: At 11:00 a. m, he is going to watch TV.
correct_sentence: At 11:00 a.m., he is going to watch TV.
error: a. m
correction: a.m.
error_type: Space Error
error_severity: 1
error_description: Space Error: According to writing conventions and English expression habits, the time unit abbreviation 〈a. m〉 should not have a space; the correct format is 『a.m.』, deleting the space in between.

error_sentence: And in the afternoon, He is going to the park.
correct_sentence: And in the afternoon, he is going to the park.
error: He
correction: he
error_type: Case Error
error_severity: 1
error_description: Case Error: According to writing conventions, pronouns within a sentence should be lowercase unless they have a special meaning. The pronoun 〈He〉 in the middle of the sentence is incorrectly capitalized and should be changed to lowercase 『he』 to comply with capitalization rules for non-sentence-initial words.

error_sentence: On Sunday, he will clean room by himself at 10:00.
correct_sentence: On Sunday, he will clean his room by himself at 10:00 a.m.
correction: his
error_type: Determiner Error
error_severity: 3
error_description: Determiner Error: According to the context, it refers to his room. The countable noun 〈room〉 lacks the necessary possessive determiner. Add 『his』 to clarify possession, forming the complete structure 『clean his room』.

error_sentence: On Sunday, he will clean room by himself at 10:00.
correct_sentence: On Sunday, he will clean his room by himself at 10:00 a.m.
error: .
correction: a.m.
error_type: Determiner Error
error_severity: 3
error_description: Determiner Error: According to English expression habits, the time expression 〈10:00〉 is within a 12-hour cycle. The necessary time unit noun to indicate morning or afternoon is missing. Add 『a.m.』 to specify the morning period, making the time expression complete and standard.

error_sentence: In the afternoon, he is going to play basketball with friends at 14:00 a.m.
correct_sentence: In the afternoon, he is going to play basketball with friends at 14:00.
error: a.m.
correction: .
error_type: Word Redundancy Error
error_severity: 4
error_description: Word Redundancy Error: According to English expression habits, the time 〈14:00〉 is already in 24-hour format and does not require the addition of 『a.m.』 to indicate the time period. Therefore, delete 『a.m.』 to avoid redundancy and make the expression more accurate.

error_sentence: After the daytime, he is going to have a bath at 18:00p.m.
correct_sentence: After the daytime, he is going to have a bath at 18:00.
error: 18:00p.m
correction: 18:00
error_type: Word Redundancy Error
error_severity: 4
error_description: Word Redundancy Error: According to English expression conventions, the time 〈18:00〉 is already in 24-hour format and does not need 『p.m.』 added to indicate the time period. Therefore, delete 『p.m.』 to avoid repetition and ensure clarity.