Writing prompt: Writing
Last Friday afternoon, your class participated in an interesting extracurricular activity. The activities included sports, various interest groups, and an English corner. These activities are beneficial for students' overall development. Please write an English narrative describing this interesting extracurricular activity.
Writing hints: out-class activity; be interested in; take part in; development; English corner

Student essay:
Last Friday afternoon, our classmates took part in an interesting activites. It includes sport activities, many kinds of groups and Einglish Coner. These activies are good for students develop.

Corrected essay:
Last Friday afternoon, our classmates took part in an interesting activity. It included sports activities, many kinds of group activities and an English corner. These activities are good for students' development.

Error analysis:
error_sentence: Last Friday afternoon, our classmates took part in an interesting activites.
correct_sentence: Last Friday afternoon, our classmates took part in an interesting activity.
error: activites
correction: activity
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to English grammar rules, the indefinite article a/an needs to modify a singular countable noun. Therefore, there is a noun number error here. The plural form 〈activites〉 needs to be changed to 『activity』 to conform to the context and English grammar rules.
error_sentence: It includes sport activities, many kinds of groups and Einglish Coner.
correct_sentence: It included sports activities, many kinds of group activities and an English corner.
error: includes sport
correction: included sports
error_type: Verb Tense Error
error_severity: 4
error_description: ① Verb Tense Error: According to the context, the main clause describes an activity last Friday and requires the past tense of the predicate verb. Therefore, the simple present third-person singular form 〈includes〉 should be changed to the past tense 『included』; ② Noun Number Error: According to English grammar rules, 〈sport〉 used as a modifier needs to be in the plural form to indicate multiple sports activities. Therefore, the singular form 〈sport〉 needs to be changed to 『sports』 to conform to English grammar rules.
error_sentence: It includes sport activities, many kinds of groups and Einglish Coner.
correct_sentence: It included sports activities, many kinds of group activities and an English corner.
error: groups and Einglish Coner
correction: group activities and an English corner
error_type: Noun Error
error_severity: 4
error_description: ① Noun Error: According to the context, the intended meaning is 'many types of interest group activities', requiring a plural countable noun phrase. Therefore, 〈groups〉 'groups' should be changed to 『group activities』 to clearly refer to interest group activities; ② Spelling Error: In the phrase 'English corner', the word 'English' is misspelled. 〈Einglish Coner〉 needs to be changed to 『English corner』 to conform to spelling norms; ③ Determiner Error: 'English corner' as a singular countable noun appearing for the first time requires the indefinite article 『an』 before it to conform to English grammar rules.
error_sentence: These activies are good for students develop.
correct_sentence: These activities are good for students' development.
error: activies
correction: activities
error_type: Spelling Error
error_severity: 1
error_description: Spelling Error: According to the original sentence meaning, the plural form of 'activity' is needed here, the correct plural formation is 'change y to i, add es'. Therefore, there is a spelling error here. The incorrect spelling 〈activies〉 needs to be changed to 『activities』 to conform to spelling norms.
error_sentence: These activies are good for students develop.
correct_sentence: These activities are good for students' development.
error: develop
correction: ' development
error_type: PoS Confusion Error
error_severity: 4
error_description: ① Noun Possessive Error: According to the original sentence meaning, the intended expression is 'students' development'. Therefore, the noun possessive form is required. 〈students〉 should be changed to the possessive form 『students'』 to match the original meaning; ② PoS Confusion Error: According to English grammar rules, a noun form is required after a noun possessive. The verb 〈develop〉 needs to be changed to the noun 『development』 to conform to English grammar rules.