Writing prompt: Create a Green Campus

Student essay:
Dear friends,
I'm L from Senior Three. In order to create a green campus, l'd like to share my ideas. And l hope that everyone can do his or her bit.
First of all, we should know the importance of a green campus. For students, we can enjoy the green plants around us and have a good mood. It also does good to the air quality. For the school, it is a part of creating the harmonious atmosphere in campus. Therefore, everyone of us shall have the obligation of preserving the environment in campus and saving energy at school.
Many measures can be taken to create a green campus. First, we should have an environmental conscience. We can plant trees and flowers at some suitable place to make the environment more agreeable. What's more,we must save water and electricity. It is a way to save resource for today and tomorrow.
In brief, we should realize the significance of this activity and try every means in our reach. Only when everyone spares no effort to do these methods can we obtain a green campus.
That's all. Thank you.

Corrected essay:
Dear friends,
I'm L from Senior Three. In order to create a green campus, I'd like to share my ideas. And I hope that everyone can do his or her bit.
First of all, we should know the importance of a green campus. For students, we can enjoy the green plants around us and have a good mood. It also does good to the air quality. For the school, it is a part of creating a harmonious atmosphere on campus. Therefore, every one of us shall have the obligation of preserving the environment on campus and saving energy at school.
Many measures can be taken to create a green campus. First, we should have an environmental conscience. We can plant trees and flowers at some suitable places to make the environment more agreeable. What's more, we must save water and electricity. It is a way to save resources for today and tomorrow.
In brief, we should realize the significance of this activity and try every means in our reach. Only when everyone spares no effort to take these measures can we obtain a green campus.
That's all. Thank you.

Error analysis:
error_sentence: In order to create a green campus, l'd like to share my ideas.
correct_sentence: In order to create a green campus, I'd like to share my ideas.
error: l'd
correction: I'd
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the sentence meaning, it is known that the intention here is to express 'I', therefore 〈l'd〉 is a misspelling of 『I'd』, and it needs to be changed to 『I'd』 to make the sentence coherent.
error_sentence: And l hope that everyone can do his or her bit.

correct_sentence: And I hope that everyone can do his or her bit.

error: l
correction: I
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the sentence meaning, it is known that the intention here is to express 'I', therefore 〈l〉 is a misspelling of 『I』, and it needs to be changed to 『I』 to make the sentence coherent.
error_sentence: For the school, it is a part of creating the harmonious atmosphere in campus.
correct_sentence: For the school, it is a part of creating a harmonious atmosphere on campus.
error: the
correction: a
error_type: Determiner Error
error_severity: 3
error_description: Determiner Error: According to English expression habits, a singular countable noun 〈harmonious atmosphere〉 used in a general sense requires the indefinite article 『a』 instead of the definite article 〈the〉, therefore 〈the〉 is changed to 『a』 to conform to expression habits.
error_sentence: For the school, it is a part of creating the harmonious atmosphere in campus.
correct_sentence: For the school, it is a part of creating a harmonious atmosphere on campus.
error: in
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English expression habits, the preposition 〈in〉 is not suitable for describing the place where an action occurs; 『on campus』 is a fixed phrase meaning 'on the school grounds', therefore the original phrase 〈in campus〉 needs to be changed to 『on campus』 to conform to expression habits.
error_sentence: Therefore, everyone of us shall have the obligation of preserving the environment in campus and saving energy at school.

correct_sentence: Therefore, every one of us shall have the obligation of preserving the environment on campus and saving energy at school.

error: everyone
correction: every one
error_type: Pronoun Error
error_severity: 2
error_description: Pronoun Error: According to the sentence meaning, this part expresses 'each person'; the compound word 〈everyone〉 refers to the whole, while here it is necessary to point out individual responsibility, therefore 〈everyone〉 is written separately as 『every one』 to fit the sentence meaning.
error_sentence: Therefore, everyone of us shall have the obligation of preserving the environment in campus and saving energy at school.

correct_sentence: Therefore, every one of us shall have the obligation of preserving the environment on campus and saving energy at school.

error: in
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English expression habits, the preposition 〈in〉 is not suitable for describing the place where an action occurs; 『on campus』 is a fixed phrase meaning 'on the school grounds', therefore the original phrase 〈in campus〉 needs to be changed to 『on campus』 to conform to expression habits.
error_sentence: We can plant trees and flowers at some suitable place to make the environment more agreeable.
correct_sentence: We can plant trees and flowers at some suitable places to make the environment more agreeable.
error: place
correction: places
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to English grammar rules, the quantifier 〈some〉 needs to be followed by a plural noun to indicate multiple objects, while in the original sentence 〈place〉 is singular, therefore 〈place〉 is changed to its plural form 『places』 to conform to English grammar rules.
error_sentence: It is a way to save resource for today and tomorrow.

correct_sentence: It is a way to save resources for today and tomorrow.

error: resource
correction: resources
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to English grammar rules, 〈resource〉 in the original sentence should be in the plural form 『resources』 to express a general concept, therefore 〈resource〉 is changed to 『resources』 to conform to grammar rules.
error_sentence: Only when everyone spares no effort to do these methods can we obtain a green campus.

correct_sentence: Only when everyone spares no effort to take these measures can we obtain a green campus.

error: do these methods
correction: take these measures
error_type: Verb Choice Error
error_severity: 5
error_description: ① Verb Choice Error: According to the context, the sentence here means 'to take some measures'; in the original sentence, the collocation of 〈do〉 with 〈methods〉 is inappropriate and does not fit the sentence meaning, so 〈do〉 needs to be changed to 『take』 to fit the context; ② Noun Error: According to the context, the meaning here is 'measures'; 〈methods〉 emphasizes procedural steps and does not fit the context, so 〈methods〉 needs to be changed to 『measures』 to emphasize concrete actions, fitting the context.