Writing prompt: The Mid-Autumn Festival

Student essay:
It was Sep27and it's a traditional Chinese festival-The Mid-Autumn festival.And during these days all Chinese are free and will have a big meal together.My mom cooked a very delicious dinner.And then dad came home early.After dinner,we watched TV, ate moon food and watched the moon.The moon is very round today.We had a good time.Mid Autumn festival is very good festival.It's day of happiness.I hope you have a wonderful Mid Autumn festival.

Corrected essay:
It was Sep. 27 and it was the traditional Chinese festival—the Mid-Autumn Festival. And during these days, all Chinese people are free and will have a big meal together. My mom cooked a very delicious dinner. And then Dad came home early. After dinner, we watched TV, ate mooncakes and watched the moon. The moon was very round that day. We had a good time. The Mid-Autumn Festival is a very good festival. It's a day of happiness. I hope you had a wonderful Mid-Autumn Festival.

Error analysis:
error_sentence: It was Sep27and it's a traditional Chinese festival-The Mid-Autumn festival.
correct_sentence: It was Sep. 27 and it was the traditional Chinese festival—the Mid-Autumn Festival.
error: Sep27and it's a
correction: Sep. 27 and it was the
error_type: Verb Tense Error
error_severity: 5
error_description: ① Punctuation Error: According to English writing conventions, 〈Sep〉 as an abbreviation for "September" is missing the period required for English date formatting; it should be changed to 『Sep.』 to clarify the date format.; ② Space Error: According to English writing conventions, a space is needed between the month and the day; there is no space between Sep and 27, so it should be changed to 『Sep. 27』.; ③ Verb Tense Error: According to English grammar and the original text, 〈it's〉 indicates the present simple tense, which is inconsistent with the past tense context of the entire text; it needs to be changed to 『it was』 to conform to the past tense.; ④ Determiner Error: According to English grammar and sentence meaning, 〈a〉 should be changed to 『the』 to specifically refer to the fixed holiday of the Mid-Autumn Festival.

error_sentence: it's a traditional Chinese festival-The Mid-Autumn festival.
correct_sentence: It was Sep. 27 and it was the traditional Chinese festival—the Mid-Autumn Festival.
error: -The
correction: —the
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English writing conventions, the hyphen 〈-〉 does not conform to the English em dash convention; 『—』 should be used to connect the appositive 〈the Mid-Autumn Festival〉.; ② Case Error: According to English writing conventions, 〈The〉 is a function word in the sentence and not part of a proper noun; its first letter should remain lowercase.

error_sentence: it's a traditional Chinese festival-The Mid-Autumn festival.
correct_sentence: It was Sep. 27 and it was the traditional Chinese festival—the Mid-Autumn Festival.
error: festival
correction: Festival
error_type: Case Error
error_severity: 2
error_description: Case Error: According to English writing conventions, when 〈festival〉 is part of the proper noun 〈Mid-Autumn festival〉, the first letter needs to be capitalized; therefore, it should be changed to 〈Festival〉 to conform to proper noun writing conventions.

error_sentence: And during these days all Chinese are free and will have a big meal together.
correct_sentence: And during these days, all Chinese people are free and will have a big meal together.
correction: ,
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar and writing conventions, when the adverbial of time 〈during these days〉 is at the beginning of the sentence, it needs to be separated from the main clause by a comma; therefore, a 『,』 needs to be added after it to correctly separate the clauses and improve sentence readability.

error_sentence: And during these days all Chinese are free and will have a big meal together.
correct_sentence: And during these days, all Chinese people are free and will have a big meal together.
correction: people
error_type: Noun Error
error_severity: 3
error_description: Noun Error: According to English grammar and sentence meaning, the original sentence's subject intends to express "all Chinese people," the corresponding English for which is "all the Chinese" or "all Chinese people"; here, the noun 『people』 is added to form the complete subject "all Chinese people" to clarify the subject and avoid semantic ambiguity.

error_sentence: And then dad came home early.
correct_sentence: And then Dad came home early.
error: dad
correction: Dad
error_type: Case Error
error_severity: 2
error_description: Case Error: According to English writing conventions, when the family member term 〈dad〉 is used as a proper noun in a sentence, the first letter needs to be capitalized. Therefore, it should be changed to 『Dad』 to conform to conventions.

error_sentence: After dinner,we watched TV, ate moon food and watched the moon.
correct_sentence: After dinner, we watched TV, ate mooncakes and watched the moon.
error: moon food
correction: mooncakes
error_type: Noun Error
error_severity: 4
error_description: Noun Error: According to the English sentence meaning and prompts, the author used 〈ate moon food〉 to express "eating mooncakes," while the correct expression for "mooncake" is "mooncake"; therefore, 〈moon food〉 should be changed to 『mooncakes』 to accurately express the traditional Mid-Autumn Festival food—mooncakes.

error_sentence: The moon is very round today.
correct_sentence: The moon was very round that day.
error: is
correction: was
error_type: Verb Tense Error
error_severity: 4
error_description: Verb Tense Error: According to English grammar and 〈that day〉 in the original text, the tense is past tense; therefore, 〈is〉 needs to be changed to the past tense 『was』 to maintain tense consistency.

error_sentence: The moon is very round today.
correct_sentence: The moon was very round that day.
error: today
correction: that day
error_type: Noun Error
error_severity: 3
error_description: Noun Error: According to English grammar and the original text, the tense of the entire piece is past tense, so consistency should be maintained when using adverbs of time. However, 〈today〉 refers to the day of writing, which contradicts the past tense context; it needs to be changed to 『that day』 to specifically refer to the day of the Mid-Autumn Festival.

error_sentence: Mid Autumn festival is very good festival.
correct_sentence: The Mid-Autumn Festival is a very good festival.
error: Mid Autumn festival is
correction: The Mid-Autumn Festival is a
error_type: Determiner Error
error_severity: 5
error_description: ① Determiner Error: According to English grammar, the definite article 『The』 should be added before the proper noun 〈Mid Autumn festival〉 to conform to grammatical rules.; ② Punctuation Error: According to English writing conventions, the proper noun 〈Mid Autumn festival〉 needs to be changed to 『Mid-Autumn Festival』 to conform to conventions.; ③ Case Error: According to English writing conventions, when 〈festival〉 is part of the proper noun 〈Mid-Autumn festival〉, the first letter needs to be capitalized; therefore, it should be changed to 〈Festival〉 to conform to proper noun writing conventions.; ④ Determiner Error: According to English grammar, the indefinite article 『a』 needs to be added before the last 〈festival〉 in the sentence to indicate a category.

error_sentence: It's day of happiness.
correct_sentence: It's a day of happiness.
correction: a
error_type: Determiner Error
error_severity: 3
error_description: Determiner Error: According to English grammar, 〈day〉 is a singular countable noun, and the indefinite article 『a』 needs to be added to form the complete expression 〈a day of happiness〉.

error_sentence: I hope you have a wonderful Mid Autumn festival.
correct_sentence: I hope you had a wonderful Mid-Autumn Festival.
error: have
correction: had
error_type: Verb Tense Error
error_severity: 4
error_description: Verb Tense Error: According to the grammar of the original text and the entire essay, the past tense is used throughout to describe the festival experience; for the wish at the end of the sentence, the verb 〈have〉 needs to be changed to the past tense 『had』 to conform to the principle of tense consistency.

error_sentence: I hope you have a wonderful Mid Autumn festival.
correct_sentence: I hope you had a wonderful Mid-Autumn Festival.
error: Autumn festival
correction: -Autumn Festival
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English writing conventions, the proper noun 〈Mid Autumn festival〉 needs to be changed to 『Mid-Autumn Festival』 to conform to correct writing conventions, meaning "Mid-Autumn Festival".; ② Case Error: According to English writing conventions, when 〈festival〉 is part of the proper noun 〈Mid-Autumn festival〉, the first letter needs to be capitalized; therefore, it should be changed to 〈Festival〉 to conform to proper noun writing conventions.