Writing prompt: Should We Keep Animals in Zoos?

Student essay:
After learning unit 5,teacher especially organized a seminar of the subject entitled"Whether we should keep animals in zoos?
About 40% of participants agreed to keep animals in zoos.They thought that if we do that,citizen can appoach animals to watch them.Without any danger,animals can be taken good care of by the zoo keepers.
However,60% of participants objected to this opinion.Animals would like to live in the wild.The caged animals couldn't live freely.
In my opinion,animals should be kept in zoos.In this way,scientists can do more research about them. What's more,variety of endangered animals can avoid the threat of dying out.
To protect animals,people should form the habit to save what we use in daily life.The sourse of them is nature.Nature is the home of both animals and human beings!

Corrected essay:
After learning Unit 5, the teacher especially organized a seminar on the subject entitled "Whether we should keep animals in zoos?"
About 40% of participants agreed to keep animals in zoos. They thought that if we do that, citizens can approach animals to watch them. Without any danger, animals can be taken good care of by the zookeepers.
However, 60% of participants objected to this opinion. Animals would like to live in the wild. The caged animals can't live freely.
In my opinion, animals should be kept in zoos. In this way, scientists can do more research about them. What's more, a variety of endangered animals can avoid the threat of dying out.
To protect animals, people should form the habit of saving what we use in daily life. The source of them is nature. Nature is the home of both animals and human beings!

Error analysis:
error_sentence: After learning unit 5,teacher especially organized a seminar of the subject entitled"Whether we should keep animals in zoos?
About 40% of participants agreed to keep animals in zoos.
correct_sentence: After learning Unit 5, the teacher especially organized a seminar on the subject entitled "Whether we should keep animals in zoos?"
About 40% of participants agreed to keep animals in zoos.
error: unit 5,teacher
correction: Unit 5, the teacher
error_type: Determiner Error
error_severity: 4
error_description: ① Case Error: According to English proper noun capitalization rules, the course unit name 〈unit 5〉 as a specific title requires initial capitalization, so it is changed to 『Unit 5』 to conform to standard format; ② Space Error: According to English punctuation rules, a space should be kept after a comma, so 〈Unit 5,teacher〉 is corrected to 『Unit 5, the teacher』, and the missing determiner is also added; ③ Determiner Error: According to English grammar rules, the common noun 〈teacher〉 is specific in this context and requires the definite article 『the』, i.e., 『the teacher』, to clearly indicate the referent.

error_sentence: After learning unit 5,teacher especially organized a seminar of the subject entitled"Whether we should keep animals in zoos?
About 40% of participants agreed to keep animals in zoos.
correct_sentence: After learning Unit 5, the teacher especially organized a seminar on the subject entitled "Whether we should keep animals in zoos?"
About 40% of participants agreed to keep animals in zoos.
error: of
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English collocations, to express "a seminar on a certain subject," the preposition 『on』 should be used instead of 〈of〉, so 〈of the subject〉 is changed to 『on the subject』, conforming to the standard expression "seminar on something."

error_sentence: After learning unit 5,teacher especially organized a seminar of the subject entitled"Whether we should keep animals in zoos?
About 40% of participants agreed to keep animals in zoos.
correct_sentence: After learning Unit 5, the teacher especially organized a seminar on the subject entitled "Whether we should keep animals in zoos?"
About 40% of participants agreed to keep animals in zoos.
error: entitled"Whether
correction: entitled "Whether
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, a space needs to be maintained between punctuation marks (like quotation marks) and adjacent words, so 〈entitled"〉 is corrected to 『entitled "』 to ensure correct formatting.

error_sentence: After learning unit 5,teacher especially organized a seminar of the subject entitled"Whether we should keep animals in zoos?
About 40% of participants agreed to keep animals in zoos.
correct_sentence: After learning Unit 5, the teacher especially organized a seminar on the subject entitled "Whether we should keep animals in zoos?"
About 40% of participants agreed to keep animals in zoos.
correction: "
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to direct quotation rules, quotation marks must be completely closed, so a closing quotation mark is added, correcting 〈"Whether we should keep animals in zoos?〉 to 『"Whether we should keep animals in zoos?"』 to ensure complete punctuation.

error_sentence: They thought that if we do that,citizen can appoach animals to watch them.
correct_sentence: They thought that if we do that, citizens can approach animals to watch them.
error: citizen can appoach
correction: citizens can approach
error_type: Noun Number Error
error_severity: 4
error_description: ① Noun Number Error: According to the sentence meaning, 〈citizen〉 is a countable noun and refers to a group, requiring the plural form, so the singular noun 〈citizen〉 is changed to 『citizens』 to maintain logical consistency; ② Spelling Error: According to English morphology, 〈appoach〉 is correctly spelled as 『approach』; the word originates from Latin appropiare, meaning "to draw near," and its spelling rules must be followed.

error_sentence: Without any danger,animals can be taken good care of by the zoo keepers.

correct_sentence: Without any danger, animals can be taken good care of by the zookeepers.

error: zoo keepers
correction: zookeepers
error_type: Space Error
error_severity: 1
error_description: Space Error: According to compound word writing conventions, 〈zoo keepers〉 should be combined into 『zookeepers』 (without a space), as this word is a fixed job title, similar to the formation of "firefighters."

error_sentence: However,60% of participants objected to this opinion.
correct_sentence: However, 60% of participants objected to this opinion.
error: However,60
correction: However, 60
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English punctuation rules, a space needs to be maintained after a comma with the subsequent content, so 〈However,60〉 is corrected to 『However, 60』 to ensure correct punctuation usage.

error_sentence: The caged animals couldn't live freely.

correct_sentence: The caged animals can't live freely.

error: could
correction: ca
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to the principle of tense consistency in context, this sentence discusses the current living conditions of animals and should use the present tense 『can't』 to express the current state, not the past tense 〈couldn't〉, so 〈couldn't〉 is changed to 『can't』 to maintain tense uniformity.

error_sentence: What's more,variety of endangered animals can avoid the threat of dying out.

correct_sentence: What's more, a variety of endangered animals can avoid the threat of dying out.

correction: a
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to fixed phrase structure, the indefinite article 『a』 needs to be added before 〈variety of〉 to form the complete expression 『a variety of』, meaning "various," so the missing article is supplied.

error_sentence: To protect animals,people should form the habit to save what we use in daily life.
correct_sentence: To protect animals, people should form the habit of saving what we use in daily life.
error: to save
correction: of saving
error_type: Nonfinite Verb Form Error
error_severity: 4
error_description: ① Preposition Error: According to English idiomatic usage, the noun 〈habit〉 should be followed by the preposition 『of』 instead of 〈to〉, so 〈habit to save〉 is changed to 『habit of saving』, conforming to the standard usage "habit of doing something"; ② Nonfinite Verb Form Error: According to grammatical rules, the preposition 〈of〉 should be followed by a gerund form, so the infinitive 〈to save〉 is changed to 『of saving』, forming the correct gerund structure.

error_sentence: The sourse of them is nature.
correct_sentence: The source of them is nature.
error: sourse
correction: source
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to English vocabulary spelling rules, 〈sourse〉 is correctly spelled as 『source』 (note the letter order s-o-u-r-c-e); the word originates from Latin sors, meaning "origin," and its spelling structure must be followed.