Writing prompt: Written Expression.
Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay.
Assume you are Tommy; please describe your life last weekend based on the picture and the hints.

Student essay:
I had a busy weekend last week. On Saturday morning I got up early. Then I rode a bike to park and I had fun plying in the park. In the afternoon, I played basketball with my friends. On Sundaymorning. I did my homework at home the I cleaned my room. In the evening, I watched TV. What a busy weekend!

Corrected essay:
I had a busy weekend last week. On Saturday morning, I got up early. Then I rode a bike to the park and I had fun when playing in the park. In the afternoon, I played basketball with my friends. On Sunday morning, I did my homework at home and then I cleaned my room. In the evening, I watched TV. What a busy weekend!

Error analysis:
error_sentence: On Saturday morning I got up early.
correct_sentence: On Saturday morning, I got up early.
correction: ,
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English expression conventions, the time adverbial phrase 〈On Saturday morning〉 acts as an independent element and needs to be separated from the main clause by a comma, so add 『,』 after 〈Saturday morning〉 to comply with English punctuation norms.
error_sentence: Then I rode a bike to park
correct_sentence: Then I rode a bike to the park and I had fun when playing in the park.
correction: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to English grammar rules, the place noun 〈park〉 in the original sentence should refer to a specific location, thus requiring the definite article 『the』 before 〈park〉 to indicate specificity, modified to 『to the park』 to conform to English grammar rules.
error_sentence: and I had fun plying in the park.
correct_sentence: Then I rode a bike to the park and I had fun when playing in the park.
error: plying
correction: when playing
error_type: Conjunction Error
error_severity: 4
error_description: ① Conjunction Error: The sentence lacks a conjunction between 〈had fun〉 and “playing”; the conjunction 『when』 is needed to indicate the time relationship, thus modifying it to 『when playing』; ② Spelling Error: According to the sentence meaning, the intention is to express 'playing', so 〈plying〉 is a misspelling of 『playing』 and needs to be corrected to 『playing』 for the sentence to make sense.
error_sentence: On Sundaymorning.
correct_sentence: On Sunday morning, I did my homework at home and then I cleaned my room.
error: Sundaymorning.
correction: Sunday morning,
error_type: Punctuation Error
error_severity: 2
error_description: ① Space Error: According to English writing conventions, 〈Sundaymorning〉 consists of two separate words and needs to be split into 『Sunday morning』 meaning 'Sunday morning', to comply with English writing habits; ② Punctuation Error: According to English expression conventions, the time adverbial phrase “On Sunday morning” acts as an independent element and needs to be separated from the main clause by a comma, therefore change the comma after “On Sunday morning” to a period to comply with English writing norms.
error_sentence: I did my homework at home the I cleaned my room.
correct_sentence: On Sunday morning, I did my homework at home and then I cleaned my room.
error: the
correction: and then
error_type: Conjunction Error
error_severity: 4
error_description: Conjunction Error: According to English grammar rules, in the original sentence, 〈I did my homework〉 and 〈I cleaned my room〉 have complete subject-verb structures and function as independent clauses, requiring the conjunction 『and then』 to connect them; therefore, 〈the〉 is modified to 『and then』 to conform to English expression habits.