Writing prompt: What Is a Good Teacher?

Student essay:
I think a good teacher explain should have many answers.First,When the student make a mistakes the teacher must be strict and kind because as a teacher must be teach her student how to do it.Second,In spare time the good teacher can be amusing and interesting with her students. Third,the good teacher should favourite students mustn't have difference between the good students and the quite poor students .Next,When the student ill a good teacher should care about the student.Finally,I think a good teacher should be rich in knowledge and must explain things clearly.
That's all.

Corrected essay:
I think a good teacher should explain and have many answers. First, when a student makes a mistake the teacher must be strict and kind because a teacher must teach their students how to do it. Second, in spare time a good teacher can be amusing and interesting with their students. Third, a good teacher should not favour students or show differences between the good students and the quite poor students. Next, when a student is ill a good teacher should care about the student. Finally, I think a good teacher should be rich in knowledge and must explain things clearly.
That's all.

Error analysis:
error_sentence: I think a good teacher explain should have many answers.
correct_sentence: I think a good teacher should explain and have many answers.
error: explain should
correction: should explain and
error_type: Conjunction Error
error_severity: 5
error_description: ① Word Order Error: The modal verb 〈should〉 must precede the main verb. According to English modal verb word order rules, 〈explain should〉 is adjusted to the standard structure 『should explain』 to form a standard verb phrase structure; ② Conjunction Error: A conjunction is needed between two parallel actions. According to English parallel structure rules, 『and』 is added after 『should explain』 to form a complete connection.

error_sentence: First,When the student make a mistakes the teacher must be strict and kind because as a teacher must be teach her student how to do it.
correct_sentence: First, when a student makes a mistake the teacher must be strict and kind because a teacher must teach their students how to do it.
error: When the student make a mistakes
correction: when a student makes a mistake
error_type: Subject-Verb Agreement Error
error_severity: 5
error_description: ① Case Error: The word 〈When〉 at the beginning of the clause is not the first word of the sentence. According to English capitalization rules, it is changed to lowercase 『when』; ② Determiner Error: A generic singular countable noun requires an indefinite article. According to English article rules, the specific determiner 〈the〉 is changed to the generic 『a』 to refer to any student; ③ Subject-Verb Agreement Error: The singular subject 〈student〉 requires a third-person singular verb. According to the principle of subject-verb agreement, 〈make〉 is changed to 『makes』 to conform to the principle of subject-verb agreement; ④ Noun Number Error: The context refers to "the act of making a mistake" rather than specific errors. According to semantic requirements, the plural 〈mistakes〉 is changed to the abstract singular 『mistake』 to match the sentence meaning.

error_sentence: First,When the student make a mistakes the teacher must be strict and kind because as a teacher must be teach her student how to do it.
correct_sentence: First, when a student makes a mistake the teacher must be strict and kind because a teacher must teach their students how to do it.
error: as
error_type: Word Redundancy Error
error_severity: 3
error_description: Word Redundancy Error: The redundant conjunction 〈as〉 causes logical confusion. According to English clause norms, it is deleted and 〈because〉 is used to directly introduce the adverbial clause of reason, making the sentence structure clearer.

error_sentence: First,When the student make a mistakes the teacher must be strict and kind because as a teacher must be teach her student how to do it.
correct_sentence: First, when a student makes a mistake the teacher must be strict and kind because a teacher must teach their students how to do it.
error: be teach her student
correction: teach their students
error_type: Word Redundancy Error
error_severity: 5
error_description: ① Word Redundancy Error: A modal verb should be followed by the base form of the verb. According to modal verb usage, the redundant 〈be〉 is deleted, and it should be changed to the single verb form 『teach』 to express the complete action; ② Pronoun Error: Avoid gender-specific pronouns. According to modern English norms, 〈her〉 is changed to the neutral plural 『their』 to correspond with the generic subject; ③ Noun Number Error: The pronoun 『their』 needs to be paired with a plural noun. According to the principle of pronoun agreement, 〈student〉 is changed to 『students』 to maintain logical coherence.

error_sentence: Second,In spare time the good teacher can be amusing and interesting with her students.
correct_sentence: Second, in spare time a good teacher can be amusing and interesting with their students.
error: In
correction: in
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English punctuation rules, the first letter of a phrase after a comma should be lowercase. The incorrectly capitalized 〈In〉 is changed to lowercase 『in』 to conform to the spelling rules for non-proper nouns within a sentence.

error_sentence: Second,In spare time the good teacher can be amusing and interesting with her students.
correct_sentence: Second, in spare time a good teacher can be amusing and interesting with their students.
error: the
correction: a
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: When referring to a general category of teachers, an indefinite article is needed. According to English article rules, the specific determiner 〈the〉 is changed to the generic 『a』 to refer to any good teacher, rather than a specific one.

error_sentence: Second,In spare time the good teacher can be amusing and interesting with her students.
correct_sentence: Second, in spare time a good teacher can be amusing and interesting with their students.
error: her
correction: their
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: Avoid gender-specific pronouns. According to modern English norms, 〈her〉 is changed to the neutral plural 『their』 to correspond with the generic subject, conforming to modern English usage.

error_sentence: Third,the good teacher should favourite students mustn't have difference between the good students and the quite poor students .Next,When the student ill a good teacher should care about the student.
correct_sentence: Third, a good teacher should not favour students or show differences between the good students and the quite poor students.
error: the
correction: a
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: When referring to a general category of teachers, an indefinite article is needed. According to English article rules, the specific determiner 〈the〉 is changed to the generic 『a』 to refer to any good teacher, rather than a specific one.

error_sentence: Third,the good teacher should favourite students mustn't have difference between the good students and the quite poor students .Next,When the student ill a good teacher should care about the student.
correct_sentence: Third, a good teacher should not favour students or show differences between the good students and the quite poor students.
error: favourite students mustn't have difference
correction: not favour students or show differences
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Sentence Structure Error: The original phrase structure 〈favourite students mustn't have difference〉 is fragmented and semantically unclear. It is reconstructed into the complete verb phrase 『should not favor students or show differences』 to express the meaning that a teacher should not favor students or differentiate between them; ② Noun Number Error: The abstract concept "difference" needs to be in plural form. According to English idiomatic usage, the singular 〈difference〉 is changed to the more idiomatic 『show differences』.

error_sentence: Third,the good teacher should favourite students mustn't have difference between the good students and the quite poor students .Next,When the student ill a good teacher should care about the student.
correct_sentence: Third, a good teacher should not favour students or show differences between the good students and the quite poor students. Next, when a student is ill a good teacher should care about the student.
error: .Next,When the student
correction: . Next, when a student is
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Space Error: According to English typesetting conventions, there should be no space between a period and the preceding word, and a space is required after the period before starting a new sentence. 〈students .Next〉 is changed to 『students. Next』 to conform to the convention; ② Case Error: The subordinating conjunction 〈When〉, not being at the beginning of a sentence, should be lowercase. According to English capitalization rules, it is changed to 『when』 to conform to the rules; ③ Determiner Error: Misuse of the definite article occurs again. According to the context's requirement for generic reference, 〈the〉 is changed to 『a』 to conform to the rules; ④ Sentence Structure Error: The adjective 〈ill〉 needs to be combined with a linking verb to form a complete predicate. According to basic English sentence pattern rules, 『is』 is added to form the predicative structure 『is ill』 to correctly express the state of the student being ill.