Writing prompt: My Happiness

Student essay:
One day,My father brought a beautiful dog.I was happy.because I very like dog.They are very beautiful.So I felt very happiness.My dog,his name is jack.And I have a friend.he is jack,my dog .OK,we have many happiness in my life ,they are god give our best gift

Corrected essay:
One day, my father brought a beautiful dog. I was happy because I liked dogs very much. They are very beautiful. So I felt very happy. My dog's name is Jack. And I have a friend. He is Jack, my dog. We have much happiness in my life. They are God's best gift to us.

Error analysis:
error_sentence: One day,My father brought a beautiful dog.
correct_sentence: One day, my father brought a beautiful dog.
error: My
correction: my
error_type: Case Error
error_severity: 1
error_description: Case Error: 〈My〉 is not a proper noun, nor is it at the beginning of a sentence, so the first letter should be lowercase, therefore 〈My〉 is changed to 『my』.
error_sentence: I was happy.because I very like dog.
correct_sentence: I was happy because I liked dogs very much.
error: happy.because I very like dog
correction: happy because I liked dogs very much
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Punctuation Error: The conjunction adverb 〈because〉 should not be preceded by a period, so the 〈.〉 after 〈because〉 is deleted to conform to grammatical rules.; ② Sentence Structure Error: The structure 〈because I very like dog〉 is incorrect; considering the context, the intended meaning is "because I liked dogs very much", so 〈because I very like dog〉 is changed to 『because I liked dogs very much』 to make the meaning coherent and conform to grammatical rules.
error_sentence: So I felt very happiness.
correct_sentence: So I felt very happy.
error: happiness
correction: happy
error_type: PoS Confusion Error
error_severity: 3
error_description: PoS Confusion Error: The linking verb 〈felt〉 needs to be followed by an adjective as a predicative, so the noun 〈happiness〉 is changed to the adjective 『happy』 to conform to grammatical rules.
error_sentence: My dog,his name is jack.
correct_sentence: My dog's name is Jack.
error: ,his
correction: 's
error_type: Noun Possessive Error
error_severity: 3
error_description: Noun Possessive Error: The intention here is to express "the dog's name", 〈his〉 is incorrectly used as a possessive, so 〈,his〉 is changed to 『's』 to correctly express the possessive relationship.
error_sentence: My dog,his name is jack.
correct_sentence: My dog's name is Jack.
error: jack
correction: Jack
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English writing conventions, the first letter of a proper noun needs to be capitalized, 〈jack〉 is a proper noun representing a name, so 〈jack〉 needs to be changed to 『Jack』 to conform to conventions.
error_sentence: And I have a friend.he is jack,my dog .OK,we have many happiness in my life ,they are god give our best gift
correct_sentence: And I have a friend. He is Jack, my dog.
error: friend.he is jack
correction: friend. He is Jack
error_type: Space Error
error_severity: 2
error_description: ① Space Error: According to English writing conventions, a punctuation mark at the end of a sentence should be followed by a space before the first word of the next sentence, so a space is added after 〈.〉 to conform to writing conventions.; ② Case Error: According to English writing conventions, the first letter of a word at the beginning of a sentence needs to be capitalized, so 〈he〉 needs to be changed to 『He』 to conform to conventions.; ③ Case Error: According to English writing conventions, the first letter of a proper noun needs to be capitalized, 〈jack〉 is a proper noun representing a name, so 〈jack〉 needs to be changed to 『Jack』 to conform to conventions.
error_sentence: And I have a friend.he is jack,my dog .OK,we have many happiness in my life ,they are god give our best gift
correct_sentence: He is Jack, my dog. We have much happiness in my life.
error: .OK,we have many
correction: . We have much
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Word Redundancy Error: 〈OK,〉 appearing in the original sentence is illogical and disrupts the sentence structure, so 〈OK,〉 is deleted to standardize the sentence structure.; ② Case Error: According to English writing conventions, the first letter of a word at the beginning of a sentence needs to be capitalized, so 〈we〉 needs to be changed to 『We』 to conform to conventions.; ③ Determiner Error: 〈happiness〉 is an uncountable noun and needs to be modified by 『much』, so 〈many〉 is changed to 『much』 to conform to grammatical rules.
error_sentence: And I have a friend.he is jack,my dog .OK,we have many happiness in my life ,they are god give our best gift
correct_sentence: We have much happiness in my life. They are God's best gift to us.
error: ,they are god give our
correction: . They are God's
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Punctuation Error: 〈we have many happiness in my life〉 and 〈they are god give our best gift〉 contain independent subject-verb structures and can be independent sentences, so 〈,they 〉 is changed to 『. They』.; ② Sentence Structure Error: The original sentence is logically chaotic and grammatically incorrect; considering the context, the intended meaning is "They are God's best gift to us", so 〈they are god give our〉 is changed to 『They are God's』 to make the meaning coherent and conform to grammatical rules.
error_sentence: And I have a friend.he is jack,my dog .OK,we have many happiness in my life ,they are god give our best gift
correct_sentence: They are God's best gift to us.
correction: to us.
error_type: Other Error
error_severity: 2
error_description: Other Error: Considering the context, the intended meaning here is "They are God's best gift to us", the sentence lacks the complete object 『to us』 to clarify the object of the action, so 『to us』 is added after 〈gift〉 to make the sentence structure complete.