Writing prompt: The Advantages and Disadvantages of Private Cars

Student essay:
As the standard of living is getting higher, more and more people are buying cars.I think private cars have the advantages and disadvantages.
First of all, private cars save time and physical strength for people.It is very important for the fast paced society. In addition,private cars give people private space in public places so that people can focus on work or study.However, people getting much too comfortable cause unhealthy bodies and laziness.What's worse, so horrible is the inevitable traffic accident.
In my opinion, now that the private cars are an indispensable part of people's lives in modern city,We should take advantages of private cars and make them serve us better. Meantime we hope that satisfactory solutions to these negative problems will be found soon.

Corrected essay:
As the standard of living is getting higher, more and more people are buying cars. I think private cars have advantages and disadvantages.
First of all, private cars save time and physical strength for people. It is very important for the fast-paced society. In addition, private cars give people private space in public places so that people can focus on work or study. However, people getting much too comfortable causes unhealthy bodies and laziness. What's worse, so horrible are the inevitable traffic accidents.
In my opinion, now that private cars are an indispensable part of people's lives in modern cities, we should take advantage of private cars and make them serve us better. Meantime we hope that satisfactory solutions to these negative problems will be found soon.

Error analysis:
error_sentence: I think private cars have the advantages and disadvantages.

correct_sentence: I think private cars have advantages and disadvantages.

error: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to English expression habits, the determiner 〈the〉 is unnecessary when describing abstract concepts 〈advantages〉 and 〈disadvantages〉, therefore 〈the〉 is deleted to make the expression conform to grammatical rules.

error_sentence: It is very important for the fast paced society.
correct_sentence: It is very important for the fast-paced society.
correction: -
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: Judging from the context, the intention here is to express 'fast-paced'; when the compound adjective 〈fast paced〉 is used as a pre-modifier, it needs to be connected with a hyphen, therefore 〈fast paced〉 is modified to 『fast-paced』 to conform to punctuation usage norms.

error_sentence: However, people getting much too comfortable cause unhealthy bodies and laziness.
correct_sentence: However, people getting much too comfortable causes unhealthy bodies and laziness.
error: cause
correction: causes
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: The subject 〈people getting much too comfortable〉 is a gerund phrase with a singular meaning; based on the principle of subject-verb agreement, the predicate verb 〈cause〉 should also be changed to the singular form 『causes』.

error_sentence: What's worse, so horrible is the inevitable traffic accident.

correct_sentence: What's worse, so horrible are the inevitable traffic accidents.

error: is
correction: are
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: The subject 〈the inevitable traffic accidents〉 is a plural phrase; based on the principle of subject-verb agreement, the predicate verb 〈is〉 should also be changed to the plural form 『are』.

error_sentence: What's worse, so horrible is the inevitable traffic accident.

correct_sentence: What's worse, so horrible are the inevitable traffic accidents.

error: accident
correction: accidents
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: Judging from the sentence meaning, the intention here is to express the general phenomenon of traffic accidents, which requires the plural form for generalization, therefore the singular form 〈accident〉 is modified to the plural form 『accidents』 to match the sentence meaning.

error_sentence: In my opinion, now that the private cars are an indispensable part of people's lives in modern city,We should take advantages of private cars and make them serve us better.
correct_sentence: In my opinion, now that private cars are an indispensable part of people's lives in modern cities, we should take advantage of private cars and make them serve us better.
error: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: The plural noun 〈private cars〉, as a categorical concept, expresses a general reference and does not require the definite article 〈the〉 before it, therefore 〈the〉 is deleted to conform to English article usage rules.

error_sentence: In my opinion, now that the private cars are an indispensable part of people's lives in modern city,We should take advantages of private cars and make them serve us better.
correct_sentence: In my opinion, now that private cars are an indispensable part of people's lives in modern cities, we should take advantage of private cars and make them serve us better.
error: city,We
correction: cities, we
error_type: Noun Number Error
error_severity: 3
error_description: ① Noun Number Error: Judging from the sentence meaning, the intention here is to refer to cities in general, expressing a plural concept, so the plural form should be used, therefore the singular form 〈 city〉 is modified to the plural form 『cities』 to match the sentence meaning; ② Case Error: According to English writing conventions, 〈We〉 after the comma should be lowercase 『we』 to conform to sentence connection norms.

error_sentence: In my opinion, now that the private cars are an indispensable part of people's lives in modern city,We should take advantages of private cars and make them serve us better.
correct_sentence: In my opinion, now that private cars are an indispensable part of people's lives in modern cities, we should take advantage of private cars and make them serve us better.
error: advantages
correction: advantage
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to English expression habits, in the fixed phrase 『take advantage of』, 『advantage』 must be in the singular form to conform to idiomatic collocation rules.