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:
My name is Tom, i am going to do my homework at Saturday 9:30am. And then, i am going to watch TV at 11am. In the afternoon, i am going to the park to have a picnic. On Sunday, i am going to clean my room at 10 am. In the afternoon, i am goin to play basketball at 2pm. At last, i am going to have a bath at 6pm.

Corrected essay:
My name is Tom. I am going to do my homework at 9:30 a.m. on Saturday. And then, I am going to watch TV at 11 a.m. In the afternoon, I am going to the park to have a picnic. On Sunday, I am going to clean my room at 10 a.m. In the afternoon, I am going to play basketball at 2:00 p.m. At last, I am going to have a bath at 6:00 p.m.

Error analysis:
error_sentence: My name is Tom, i am going to do my homework at Saturday 9:30am.
correct_sentence: My name is Tom. I am going to do my homework at 9:30 a.m. on Saturday.
error: , i
correction: . I
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English compound sentence punctuation rules, a comma cannot connect two independent clauses. The original sentence 〈My name is Tom, i...〉 incorrectly uses a comma to separate two complete main clauses, creating a comma splice. The comma needs to be changed to a period to form legal clauses, and according to English sentence capitalization rules, the pronoun 〈i〉 as the subject of the new sentence must be capitalized as 『I』.

error_sentence: My name is Tom, i am going to do my homework at Saturday 9:30am.
correct_sentence: I am going to do my homework at 9:30 a.m. on Saturday.
error: Saturday 9:30am
correction: 9:30 a.m. on Saturday
error_type: Word Order Error
error_severity: 3
error_description: ① Word Order Error: According to English time expression norms, the specific time should precede the day of the week, forming a fixed 'time + day' structure. The original expression 〈Saturday 9:30am〉 reverses the standard word order and needs to be adjusted to 『9:30 a.m. on Saturday』; ② Contraction Error: According to English time expression norms, the time abbreviation 〈am〉 should use the standard form with periods. Therefore, 〈am〉 needs to be changed to 『a.m.』 to ensure compliance with English abbreviation rules; ③ Preposition Error: According to English rules for forming time adverbials, the day noun 〈Saturday〉 must be paired with the preposition 『on』 when used as a time adverbial. The original sentence lacks the necessary preposition, so 『on』 needs to be added to form the complete time adverbial structure 『on Saturday』.

error_sentence: And then, i am going to watch TV at 11am.
correct_sentence: And then, I am going to watch TV at 11 a.m.
error: i
correction: I
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English sentence capitalization rules, the pronoun 〈i〉 as the subject of the new sentence must be capitalized as 『I』.

error_sentence: And then, i am going to watch TV at 11am.
correct_sentence: And then, I am going to watch TV at 11 a.m.
error: am.
correction: a.m.
error_type: Contraction Error
error_severity: 2
error_description: Contraction Error: According to English time expression norms, the time abbreviation 〈am〉 should use the standard form with periods. Therefore, 〈am〉 needs to be changed to 『a.m.』 to ensure compliance with English abbreviation rules.

error_sentence: In the afternoon, i am going to the park to have a picnic.
correct_sentence: In the afternoon, I am going to the park to have a picnic.
error: i
correction: I
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English sentence capitalization rules, the pronoun 〈i〉 as the subject of the new sentence must be capitalized as 『I』.

error_sentence: On Sunday, i am going to clean my room at 10 am.
correct_sentence: On Sunday, I am going to clean my room at 10 a.m.
error: i
correction: I
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English sentence capitalization rules, the pronoun 〈i〉 as the subject of the new sentence must be capitalized as 『I』.

error_sentence: On Sunday, i am going to clean my room at 10 am.
correct_sentence: On Sunday, I am going to clean my room at 10 a.m.
error: am.
correction: a.m.
error_type: Contraction Error
error_severity: 2
error_description: Contraction Error: According to English time expression norms, the time abbreviation 〈am〉 should use the standard form with periods. Therefore, 〈am〉 needs to be changed to 『a.m.』 to ensure compliance with English abbreviation rules.

error_sentence: In the afternoon, i am goin to play basketball at 2pm.
correct_sentence: In the afternoon, I am going to play basketball at 2:00 p.m. At last, I am going to have a bath at 6:00 p.m.
error: i am goin
correction: I am going
error_type: Spelling Error
error_severity: 3
error_description: ① Case Error: According to English sentence capitalization rules, the personal pronoun 〈i〉 must be capitalized when starting an independent sentence. Therefore, the lowercase 〈i〉 is corrected to the uppercase form 『I』, ultimately modifying it to the complete sentence 『I am going』 to comply with English grammar and writing conventions; ② Spelling Error: According to the rules for forming English present participles, 〈goin〉 is missing the final consonant 〈g〉, preventing the correct formation of the progressive tense. Therefore, the misspelled 〈goin〉 is completed to 『going』 to conform to the present participle spelling rule for 'go'.

error_sentence: In the afternoon, i am goin to play basketball at 2pm.
correct_sentence: In the afternoon, I am going to play basketball at 2:00 p.m. At last, I am going to have a bath at 6:00 p.m.
error: 2pm.
correction: 2:00 p.m.
error_type: Contraction Error
error_severity: 3
error_description: ① Space Error: According to English time expression norms, a space is required between the number and the time abbreviation 〈pm〉. Therefore, a space 『 』 should be added between 〈2〉 and 〈pm〉, changing 〈2pm〉 to 『2 pm』 to conform to standard format; ② Contraction Error: According to formal English writing rules, the time abbreviation 〈pm〉 should use the standard form with periods. Therefore, 〈pm〉 needs to be changed to 『p.m.』, with the final correction being 『2 p.m.』 to ensure compliance with English abbreviation rules.

error_sentence: At last, i am going to have a bath at 6pm.
correct_sentence: In the afternoon, I am going to play basketball at 2:00 p.m. At last, I am going to have a bath at 6:00 p.m.
error: i
correction: I
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English sentence capitalization rules, the pronoun 〈i〉 as the subject of the new sentence must be capitalized as 『I』.

error_sentence: At last, i am going to have a bath at 6pm.
correct_sentence: In the afternoon, I am going to play basketball at 2:00 p.m. At last, I am going to have a bath at 6:00 p.m.
error: 6pm.
correction: 6:00 p.m.
error_type: Contraction Error
error_severity: 3
error_description: ① Space Error: According to English time expression norms, a space is required between the number and the time abbreviation 〈pm〉. Therefore, a space 『 』 should be added between 〈6〉 and 〈pm〉, changing 〈6pm〉 to 『6 pm』 to conform to standard format; ② Contraction Error: According to formal English writing rules, the time abbreviation 〈pm〉 should use the standard form with periods. Therefore, 〈pm〉 needs to be changed to 『p.m.』, with the final correction being 『6 p.m.』 to ensure compliance with English abbreviation rules.