Writing prompt: Keeping Pets

Student essay:
Nowadays,more and more people prefer to keep pets.
On the one hand,keeping pets has some benefits.First,it can bring happiness to the old and let the young learn how to become more responsible people.Second,it can help people know more about animals and take good care of animals.
On the other hand,there are also some troubles when we are keeping pets.Firstly,pets like dogs are always noisy and bark at strangers.If some pets are so naughty that make your things dirty and messy,you will be angry with them but you ca do nothing to them.Secondly,it will take additional cost to keep pets.What's more,it's possible to destroy the ecological balance.
In my opinion,pets can help people a lot.For example,guide dogs are the blind's eyes that lead to anywhere.However,I don't thing that it's a good idea to raise pets.When you go for a trip with your family,the pets won't be fed or looked after.

Corrected essay:
Nowadays, more and more people prefer to keep pets.
On the one hand, keeping pets has some benefits. First, it can bring happiness to the old and let the young learn how to become more responsible people. Second, it can help people know more about animals and take good care of them.
On the other hand, there are also some troubles when we are keeping pets. Firstly, pets like dogs are always noisy and bark at strangers. If some pets are so naughty that they make your things dirty and messy, you will be angry with them but can do nothing to them. Secondly, it will take additional costs to keep pets. What's more, it's possible to destroy the ecological balance.
In my opinion, pets can help people a lot. For example, guide dogs are the blind's eyes that lead them anywhere. However, I don't think that it's a good idea to raise pets. When you go on a trip with your family, the pets won't be fed or looked after.

Error analysis:
error_sentence: Second,it can help people know more about animals and take good care of animals.

correct_sentence: Second, it can help people know more about animals and take good care of them.

error: animals
correction: them
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: According to the principle of pronoun agreement in English, the latter phrase 〈take good care of animals〉 is repetitive with the preceding text; the pronoun 『them』 should be used to replace 〈animals〉 to avoid repetition and maintain clear referential relationships between sentences.

error_sentence: If some pets are so naughty that make your things dirty and messy,you will be angry with them but you ca do nothing to them.
correct_sentence: If some pets are so naughty that they make your things dirty and messy, you will be angry with them but can do nothing to them.
correction: they
error_type: Sentence Structure Error
error_severity: 3
error_description: Sentence Structure Error: According to the structural requirements of the “so...that” resultative adverbial clause, the clause 〈that make...〉 lacks a subject; 『they』 needs to be added as the subject of the clause (referring to the preceding subject) to form a complete subject-verb structure 『that they make...』.

error_sentence: If some pets are so naughty that make your things dirty and messy,you will be angry with them but you ca do nothing to them.
correct_sentence: If some pets are so naughty that they make your things dirty and messy, you will be angry with them but can do nothing to them.
error: you ca
correction: can
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Word Redundancy Error: According to English parallel sentence structure rules, the second subject 〈you〉 in 〈you will be angry with them but you can do nothing to them〉 is redundant and should be deleted to maintain sentence logical coherence, changing it to 『but can do nothing...』; ② Spelling Error: According to English modal verb spelling conventions, 〈ca〉 is a misspelling (missing the letter n); the correct form should be 『can』 to express “ability or permission”.

error_sentence: Secondly,it will take additional cost to keep pets.
correct_sentence: Secondly, it will take additional costs to keep pets.
error: cost
correction: costs
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to English countable noun usage rules, when 〈cost〉 in 〈additional cost〉 is used as a countable noun to indicate specific expenses, the plural form 『costs』 is required to represent multiple additional fees, conforming to context and grammatical requirements.

error_sentence: For example,guide dogs are the blind's eyes that lead to anywhere.
correct_sentence: For example, guide dogs are the blind's eyes that lead them anywhere.
error: to
correction: them
error_type: Pronoun Error
error_severity: 4
error_description: ① Preposition Error: According to transitive verb usage rules, 〈lead〉 as a transitive verb is directly followed by an object; the redundant preposition 〈to〉 needs to be deleted to form the correct collocation 『lead blind people』; ② Pronoun Error: According to English transitive verb object requirements, 『them』 needs to be added as an object to refer to the blind people mentioned earlier, making the structure 『help them』 complete.

error_sentence: However,I don't thing that it's a good idea to raise pets.
correct_sentence: However, I don't think that it's a good idea to raise pets.
error: thing
correction: think
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to homophone differentiation rules, 〈thing〉 (noun, object) and 『think』 (verb, to believe) are similar in pronunciation but different in meaning; here, the verb 『think』 is needed to express an “opinion”.

error_sentence: When you go for a trip with your family,the pets won't be fed or looked after.
correct_sentence: When you go on a trip with your family, the pets won't be fed or looked after.
error: for
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English fixed collocation rules, 〈go for a trip〉 does not conform to idiomatic expression and should be changed to 『go on a trip』; 〈for〉 needs to be changed to 『on』. This is the standard way to say “go on a trip”.