Writing prompt: My Weekend

Student essay:
Last weekend, I went to the Great Wall with my family.
In front of the city gate, we met a foreign boy,"Excuse me,"he said,"Where can I buy tickets?"
He said he called Mike, he came from the US. I also introduced myself to him.
"Shall we visit the Great Wall together?"I said."I can introduce you to the Great Wall and its history."
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.We exchanged the address. We have agreed to contact us by writing letters.
I like this new friend very much, we have a lot of same hobby, I hope we can travel together in the future.

Corrected essay:
Last weekend, I went to the Great Wall with my family.
In front of the city gate, we met a foreign boy. "Excuse me," he said, "Where can I buy tickets?"
He said he was called Mike, and he came from the US. I also introduced myself to him.
"Shall we visit the Great Wall together?" I said. "I can introduce you to the Great Wall and its history."
"Good!" he said and smiled. "I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall: the Great Wall was built during the Warring States period, which was led by Qin Shihuang to defend against the enemy's invasion.
We talked a lot, and we were happy. We exchanged addresses. We agreed to contact each other by writing letters.
 I like this new friend very much. We have a lot of the same hobbies. I hope we can travel together in the future.

Error analysis:
error_sentence: In front of the city gate, we met a foreign boy,"Excuse me,"he said,"Where can I buy tickets?
correct_sentence: In front of the city gate, we met a foreign boy. "Excuse me," he said, "Where can I buy tickets?
error: boy,"Excuse me,"he said,"Where
correction: boy. "Excuse me," he said, "Where
error_type: Punctuation Error
error_severity: 3
error_description: ① Punctuation Error: According to English writing conventions, a period should be used to separate the main clause before direct speech, so 〈boy,〉 in the original sentence needs to be changed to 『boy.』 to conform to writing conventions; ② Space Error: According to English writing conventions, a space needs to be added between the quotation mark and the pronoun, so 〈"he〉 in the original sentence needs to be changed to 『" he』 to conform to writing conventions; ③ Space Error: According to English writing conventions, a space needs to be added between the comma and the direct speech, so 〈said,"〉 in the original sentence needs to be changed to 『said, "』 to conform to writing conventions.
error_sentence: "
He said he called Mike, he came from the US.
correct_sentence: "
He said he was called Mike, and he came from the US.
correction: was
error_type: Verb Voice Error
error_severity: 3
error_description: Verb Voice Error: According to the context, the meaning here is "he was called Mike," so the passive voice should be used. The passive voice structure in the original sentence is incomplete, so 〈called〉 needs to be changed to 『was called』 to fit the context.
error_sentence: "
He said he called Mike, he came from the US.
correct_sentence: "
He said he was called Mike, and he came from the US.
correction: and
error_type: Conjunction Error
error_severity: 3
error_description: Conjunction Error: According to English grammar rules, 〈He said he called Mike〉 and 〈he came from the US〉 in the original sentence have complete subject-verb structures. As parallel structures, 『and』 needs to be added to connect them to conform to English grammar rules.
error_sentence: "Shall we visit the Great Wall together?"I said.
correct_sentence: "Shall we visit the Great Wall together?" I said.
error: together?"I
correction: together?" I
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, a space needs to be added between the quotation mark and the pronoun, so 〈together?"I〉 in the original sentence needs to be changed to 『together?" I』 to conform to writing conventions.
error_sentence: "I can introduce you to the Great Wall and its history.
correct_sentence: "I can introduce you to the Great Wall and its history.
error: "I
correction: "I
error_type: Other Error
error_description: Other Error: There is no actual modification between input and output here, possibly a labeling error.
error_sentence: "
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.
correct_sentence: "
"Good!" he said and smiled.
error: Good!"He
correction: Good!" he
error_type: Space Error
error_severity: 2
error_description: ① Space Error: According to English writing conventions, a space needs to be added between the quotation mark and the pronoun, so 〈"He〉 in the original sentence needs to be changed to 『" he』 to conform to writing conventions; ② Case Error: According to English writing conventions, the pronoun after the quotation should not be capitalized, so 〈He〉 needs to be changed to lowercase 『he』 to conform to writing conventions.
error_sentence: "
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.
correct_sentence: he said and smiled. "I can't wait to visit the Great Wall!"

error: smiled,"I
correction: smiled. "I
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: According to English grammar rules, the original sentences 〈He said and smiled〉 and 〈I can't wait to visit the Great Wall〉 have complete subject-verb structures. A comma 〈,〉 cannot be used to separate two independent sentences, so 〈,〉 needs to be changed to 『.』 to conform to English grammar rules.
error_sentence: "
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.
correct_sentence: On the way, I talked about the history of the Great Wall: the Great Wall was built during the Warring States period, which was led by Qin Shihuang to defend against the enemy's invasion.

error: and his
error_type: Word Redundancy Error
error_severity: 4
error_description: Word Redundancy Error: According to the context, 〈and his〉 in the original sentence is irrelevant to the subsequent content, causing word redundancy, so 〈and his〉 needs to be deleted to make the sentence more concise.
error_sentence: "
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.
correct_sentence: On the way, I talked about the history of the Great Wall: the Great Wall was built during the Warring States period, which was led by Qin Shihuang to defend against the enemy's invasion.

error: build and defend
correction: defend against
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Word Redundancy Error: According to the context, the simultaneous appearance of 〈build〉 and 〈defend〉 in the original sentence confuses the meaning, causing word redundancy, so 〈build and〉 needs to be deleted to make the sentence more concise; ② Preposition Error: According to English expression habits, the meaning here is "to defend against the enemy's invasion," and 『defend against』 is a fixed phrase, so 『against』 needs to be added after 〈defend〉 to conform to expression habits.
error_sentence: "
"Good!"He said and smiled,"I can't wait to visit the Great Wall!"
On the way, I talked about the history of the Great Wall and his: the Great Wall was built during the Warring States period,which was led by Qin Shihuang to build and defend the enemy's invasion--
We talked a lot, and we were happy.
correct_sentence: On the way, I talked about the history of the Great Wall: the Great Wall was built during the Warring States period, which was led by Qin Shihuang to defend against the enemy's invasion.

error: invasion--
correction: invasion.
error_type: Punctuation Error
error_severity: 1
error_description: Punctuation Error: According to English writing conventions, the em dash 〈--〉 is used improperly and the sentence should end with a period, so 〈invasion--〉 needs to be changed to 『invasion.』 to conform to writing conventions.
error_sentence: We exchanged the address.
correct_sentence: We exchanged addresses.
error: the address
correction: addresses
error_type: Noun Number Error
error_severity: 2
error_description: Noun Number Error: According to the context, 〈address〉 in the original sentence should be in the plural form 『addresses』 to indicate that both parties exchanged addresses, to fit the context.
error_sentence: We have agreed to contact us by writing letters.

correct_sentence: We agreed to contact each other by writing letters.

error: have
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to the context, the simple past tense should be used, while 〈have agreed〉 in the original sentence is in the present perfect tense, so 〈have agreed〉 needs to be changed to the simple past tense 『agreed』 to fit the context.
error_sentence: We have agreed to contact us by writing letters.

correct_sentence: We agreed to contact each other by writing letters.

error: us
correction: each other
error_type: Pronoun Error
error_severity: 2
error_description: Pronoun Error: According to the context, the sentence meaning here is "contact each other." 〈us〉 in the original sentence fails to correctly express mutual contact, so 〈us〉 is changed to 『each other』 to fit the context.
error_sentence: I like this new friend very much, we have a lot of same hobby, I hope we can travel together in the future.
correct_sentence: I like this new friend very much. We have a lot of the same hobbies.
error: , we
correction: . We
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the original sentences 〈I like this new friend very much〉 and 〈we have a lot of same hobby〉 have complete subject-verb structures. A comma 〈,〉 cannot be used to separate two independent sentences and needs to be changed to a period. After the change, 〈we〉 is at the beginning of the sentence, and its first letter needs to be capitalized, so 〈, we〉 needs to be changed to 『. We』 to conform to English grammar rules.
error_sentence: I like this new friend very much, we have a lot of same hobby, I hope we can travel together in the future.
correct_sentence: We have a lot of the same hobbies.
error: same hobby,
correction: the same hobbies.
error_type: Noun Number Error
error_severity: 4
error_description: ① Determiner Error: According to English grammar rules, the definite article 『the』 indicates specificity, so 『the』 needs to be added before 『same』 in the original sentence to refer to a specific object; ② Noun Number Error: According to English grammar rules, 〈hobby〉 in the original sentence should be in the plural form 『hobbies』 to be consistent with the preceding 〈a lot of〉, so 〈hobby〉 should be changed to 『hobbies』 to conform to English grammar rules; ③ Punctuation Error: According to English grammar rules, the original sentences 〈we have a lot of same hobby〉 and 〈I hope we can travel together in the future〉 have complete subject-verb structures. A comma 〈,〉 cannot be used to separate two independent sentences, so 〈,〉 needs to be changed to 『.』 to conform to English grammar rules.