Writing prompt: Reflections on Reading David Copperfield

Student essay:
I was amazed at the main characte.
In his early childhood, I think he was the happiest boy in the world. Though he had not a father, he was surrounded by other people.They tried their best to help him.In their company, he grew up healthily and happily.
But when Mr. Murdstone who became his stepfather later appeared in his life, his happiness was replaced with sadness. He becam unluckily and sad.. He and the housekeeper was totally in Mr. Mudstones' power. The cold man was determined to crush the little boy, so he behaved badly to the boy in the way that I can't believe. Things became even worse when David's mother passed away. David experienced many serious things from which he suffered a lot.
Luckily, he found his aunt and she accepted him. After some ups and downs, he finally achieved happy endings and new life.
As far as I am concerned, he is a brave boy . When he meets difficulties, he never gives up and tries his best to solve the problems that many people think impossible. He challenges his bad life and stays optimistic. I admire him and cheer for him

Corrected essay:
I was amazed at the main character.
In his early childhood, I think he was the happiest boy in the world. Though he did not have a father, he was surrounded by other people. They tried their best to help him. In their company, he grew up healthily and happily.
But when Mr. Murdstone, who became his stepfather later, appeared in his life, his happiness was replaced with sadness. He became unlucky and sad. He and the housekeeper were totally in Mr. Murdstone's power. The cold man was determined to crush the little boy, so he behaved badly to the boy in a way that I can't believe. Things became even worse when David's mother passed away. David experienced many serious things from which he suffered a lot.
Luckily, he found his aunt, and she accepted him. After some ups and downs, he finally achieved a happy ending and a new life.
As far as I am concerned, he is a brave boy. When he meets difficulties, he never gives up and tries his best to solve the problems that many people think impossible. He challenges his bad life and stays optimistic. I admire him and cheer for him.

Error analysis:
error_sentence: I was amazed at the main characte.

correct_sentence: I was amazed at the main character.

error: characte
correction: character
error_type: Spelling Error
error_severity: 1
error_description: Spelling Error: According to the sentence meaning, it is clear that the intended word here is “character”; therefore, 〈characte〉 is a misspelling of 『character』, and it needs to be corrected to 『character』 to make the sentence coherent.

error_sentence: Though he had not a father, he was surrounded by other people.
correct_sentence: Though he did not have a father, he was surrounded by other people.
error: had not
correction: did not have
error_type: Verb Choice Error
error_severity: 3
error_description: Verb Choice Error: When expressing negation, 『have』 as a main verb requires the auxiliary verb “do” to form a negative sentence; therefore, 〈had not〉 is changed to 『did not have』 to comply with English grammar rules.

error_sentence: But when Mr. Murdstone who became his stepfather later appeared in his life, his happiness was replaced with sadness.
correct_sentence: But when Mr. Murdstone, who became his stepfather later, appeared in his life, his happiness was replaced with sadness.
correction: ,
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: The non-restrictive relative clause 〈who became his stepfather later〉 needs to be separated from the main clause by a comma; therefore, a comma 『,』 is added after 〈Murdstone〉 to ensure clear sentence structure.

error_sentence: But when Mr. Murdstone who became his stepfather later appeared in his life, his happiness was replaced with sadness.
correct_sentence: But when Mr. Murdstone, who became his stepfather later, appeared in his life, his happiness was replaced with sadness.
correction: ,
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: The non-restrictive relative clause 〈who became his stepfather later〉 needs to be separated from the main clause by a comma; therefore, a comma 『,』 is added after 〈later〉 to ensure clear sentence structure.

error_sentence: He becam unluckily and sad..
correct_sentence: He became unlucky and sad.
error: becam unluckily
correction: became unlucky
error_type: PoS Confusion Error
error_severity: 3
error_description: ① Spelling Error: According to the sentence meaning, it is clear that the intended word here is “became”; therefore, 〈becam〉 is a misspelling of 『became』, and it needs to be corrected to 『became』 to make the sentence coherent; ② PoS Confusion Error: 『became』 is a linking verb and should be followed by an adjective as a predicative; therefore, the adverb 〈unluckily〉 is changed to the adjective 『unlucky』 to comply with grammar rules.

error_sentence: He becam unluckily and sad..
correct_sentence: He became unlucky and sad.
error: ..
correction: .
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: The period is repeated at the end of the sentence; therefore, 〈..〉 is changed to 『.』 to conform to punctuation rules.

error_sentence: He and the housekeeper was totally in Mr. Mudstones' power.
correct_sentence: He and the housekeeper were totally in Mr. Murdstone's power.
error: was
correction: were
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: The subject 〈He and the housekeeper〉 is plural, so the verb should be 『were』; therefore, 〈was〉 is changed to 『were』 to maintain subject-verb agreement.

error_sentence: He and the housekeeper was totally in Mr. Mudstones' power.
correct_sentence: He and the housekeeper were totally in Mr. Murdstone's power.
error: Mudstones'
correction: Murdstone's
error_type: Noun Possessive Error
error_severity: 3
error_description: ① Spelling Error: According to the sentence meaning, it is clear that the intended name here is “Murdstone”; therefore, 〈Mudstone〉 is a misspelling of 『Murdstone』, and it needs to be corrected to 『Murdstone』 to make the sentence coherent; ② Noun Possessive Error: The possessive form of 〈Mudstones'〉 is incorrect; therefore, 〈Mudstones'〉 is changed to 『Murdstone's』 to correctly express “Murdstone's power”.

error_sentence: The cold man was determined to crush the little boy, so he behaved badly to the boy in the way that I can't believe.
correct_sentence: The cold man was determined to crush the little boy, so he behaved badly to the boy in a way that I can't believe.
error: the
correction: a
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: Here, 〈way〉 is used in a general sense and requires the indefinite article 『a』 for modification; therefore, 〈the〉 is changed to 『a』 to fit the meaning, indicating a non-specific manner.

error_sentence: Luckily, he found his aunt and she accepted him.
correct_sentence: Luckily, he found his aunt, and she accepted him.
correction: ,
error_type: Punctuation Error
error_description: Punctuation Error: A comma 『,』 needs to be added between the coordinate clauses 〈he found his aunt〉 and 〈she accepted him〉, and a comma should be used before the conjunction 〈and〉 to separate them.

error_sentence: After some ups and downs, he finally achieved happy endings and new life.

correct_sentence: After some ups and downs, he finally achieved a happy ending and a new life.

error: happy endings and
correction: a happy ending and a
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: Considering the context, the original sentence expresses that he achieved one final happy outcome after experiencing difficulties, not multiple outcomes; 〈endings〉 does not fit the meaning and the singular form 『ending』 should be used to denote a single happy conclusion, thus 〈happy endings〉 is changed to 『a happy ending』; ② Determiner Error: 〈new life〉 requires an indefinite article 『a』 for modification because it signifies “a type of new life”; therefore, 『a』 is added before 〈new〉 to correctly express the sentence meaning.

error_sentence: I admire him and cheer for him
correct_sentence: I admire him and cheer for him.
correction: .
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: The original sentence is a declarative sentence, and a period is missing at the end; therefore, a period 『.』 is added after 〈him〉 to ensure sentence completeness.