Writing prompt: The weekend is coming. Classmates, what are you planning to do? Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay of about 60 words about your plans for the weekend.
Writing hints: be going to; do cleaning; visit grandparents; have a good time

Student essay:
Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.

Corrected essay:
The weekend is coming. First, I am going to do my homework in the morning. In the afternoon, I am going to do cleaning with my mother. After two days, we are going to visit my grandpa and grandma, and we are going to the park to play. It will be a good time.

Error analysis:
error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: The weekend is coming. First, I am going to do my homework in the morning.
error: Weekend will coming, First
correction: The weekend is coming. First,
error_type: Auxiliary Error
error_severity: 5
error_description: ① Determiner Error: According to English usage, the definite article 『The』 indicates specificity. Phrases referring to specific time periods like 〈Weekend〉 usually require the article 『The』 for clarity, so 〈Weekend〉 is changed to 『The weekend』 to conform to English idiomatic expression; ② Auxiliary Error: Based on the context and prompts, the sentence describes planned future activities, requiring the simple future tense. The original phrase 〈will coming〉 is incorrectly formed; it should be changed to 『is coming』 to indicate a planned future action, fitting the context; ③ Punctuation Error: According to English grammar rules, the original clauses 〈Weekend will coming〉 and 〈First I am going to do...〉 are independent clauses and should be separated by a period 『.』; therefore, the comma 〈,〉 is replaced with a period 『.』 for correct sentence structure.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: First, I am going to do my homework in the morning. In the afternoon, I am going to do cleaning with my mother.
error: , in
correction: . In
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the original clauses 〈First I am going to...〉 and 〈in the afternoon〉 are independent clauses and should be separated by a period 『.』; therefore, 〈, in〉 is replaced with 『. In』 for correct sentence structure.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: In the afternoon, I am going to do cleaning with my mother.
error: clean
correction: cleaning
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: According to English grammar rules, when expressing a specific activity, the action following the verb 〈do〉 should be in the gerund form 『cleaning』, not the base form 〈clean〉; therefore, 〈do clean〉 is changed to 『do cleaning』 to comply with grammatical rules.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: In the afternoon, I am going to do cleaning with my mother. After two days, we are going to visit my grandpa and grandma, and we are going to the park to play.
error: ,
correction: . After
error_type: Conjunction Error
error_severity: 5
error_description: ① Punctuation Error: According to English grammar rules, the original clauses 〈I am going to do clean with my mother〉 and 〈two days, We are going to...〉 are independent clauses and should be separated by a period 『.』; therefore, the comma 〈,〉 is replaced with a period 『.』 for correct sentence structure; ② Conjunction Error: According to English expression habits and context, the intended meaning here is 'after two days'. The conjunction 『After』 indicates the logical sequence of events. The original phrase 〈two days〉 lacks a conjunction, failing to accurately express the temporal order of the action; therefore, it is changed to 『After two days』 to fit expression habits and context.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: After two days, we are going to visit my grandpa and grandma, and we are going to the park to play.
error: We
correction: we
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English writing conventions, words not at the beginning of a sentence should not be capitalized. In the original sentence, 〈We〉 is not at the beginning and does not require capitalization; therefore, 〈We〉 needs to be changed to 『we』 to conform to the convention.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: After two days, we are going to visit my grandpa and grandma, and we are going to the park to play.
correction: and
error_type: Conjunction Error
error_severity: 4
error_description: Conjunction Error: According to English expression habits, parallel structures should be connected by 『and』. In the original sentence, 〈visit my grandpa and grandma〉 and 〈we are going to park to play〉 are parallel structures, so 『and』 needs to be added for connection to conform to English expression habits.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: After two days, we are going to visit my grandpa and grandma, and we are going to the park to play.
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 place, thus requiring the definite article 『the』 before 〈park〉 to indicate specificity, changing it to 『to the park』 to comply with English grammar rules.

error_sentence: Weekend will coming, First I am going to do my homework in the morning, in the afternoon, I am going to do clean with my mother , two days, We are going to visit my grandpa and grandma, we are going to park to play , it will be a good time.
correct_sentence: After two days, we are going to visit my grandpa and grandma, and we are going to the park to play. It will be a good time.
error: , it
correction: . It
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the original clauses 〈we are going to park to play〉 and 〈it will be a good time〉 are independent clauses and should be separated by a period 『.』; therefore, 〈, it〉 is replaced with 『. It』 for correct sentence structure.