Writing prompt: The First Christmas without Homework

Student essay:
My name is U.I'm an American which is living in New York.Last week,I went to Beijing to have a trip.I went there by plane November 3.At 4 o'clock,I arrived in Beijing.I stayed there for four days.On the first day,I went to the Great Wall. It's so beatiful and majestic that I was very surprise.The next day I went to the Forbidden City.It's the place where the emperors lived.It's very large and beatiful.I think the emperors that lived there must be very happy.On the third day,I went to the Bird's Nest Stadium and the Water Cube.I have only seen them on TV.When I walked close,I was shocked by the beauty of it and I took many photos of it.On the last day,I finished my perfect trip and I am looking forward to go to Beijing next time.

Corrected essay:
My name is U. I'm an American who is living in New York. Last week, I went to Beijing to have a trip. I went there by plane on November 3. At 4 o'clock, I arrived in Beijing. I stayed there for four days. On the first day, I went to the Great Wall. It's so beautiful and majestic that I was very surprised. The next day I went to the Forbidden City. It's the place where the emperors lived. It's very large and beautiful. I think the emperors who lived there must have been very happy. On the third day, I went to the Bird's Nest Stadium and the Water Cube. I had only seen them on TV. When I walked close, I was shocked by the beauty of them and I took many photos of them. On the last day, I finished my perfect trip and I am looking forward to going to Beijing next time.

Error analysis:
error_sentence: My name is U.I'm an American which is living in New York.
correct_sentence: My name is U. I'm an American who is living in New York.
error: U.I'm
correction: U. I'm
error_type: Space Error
error_severity: 1
error_description: Space Error: According to English writing conventions, words must be separated by spaces, so 〈U.I'm〉 is changed to 『U. I'm』 to conform to the convention.

error_sentence: My name is U.I'm an American which is living in New York.
correct_sentence: I'm an American who is living in New York.
error: which
correction: who
error_type: Relative Word Error
error_severity: 3
error_description: Relative Word Error: The antecedent 〈American〉 refers to a person, so the relative pronoun 『who』 should be used; therefore, 〈which〉 is changed to 『who』 to comply with grammatical rules.

error_sentence: I went there by plane November 3.At 4 o'clock,I arrived in Beijing.
correct_sentence: I went there by plane on November 3. At 4 o'clock, I arrived in Beijing.
error: November 3.At
correction: on November 3. At
error_type: Preposition Error
error_severity: 2
error_description: ① Preposition Error: The preposition 『on』 is needed before a date to indicate a specific time, so 『on』 is added before 〈November〉 to comply with English time expression rules; ② Space Error: A space is required after a period to separate sentences, so 〈November 3.At〉 is changed to 『November 3. At』 to conform to punctuation conventions.

error_sentence: It's so beatiful and majestic that I was very surprise.
correct_sentence: It's so beautiful and majestic that I was very surprised.
error: beatiful
correction: beautiful
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the sentence meaning, it is intended to express 'beautiful', so 〈beatiful〉 is a misspelling of 『beautiful』; it needs to be changed from 〈beatiful〉 to 『beautiful』 to make the sentence coherent.

error_sentence: It's so beatiful and majestic that I was very surprise.
correct_sentence: It's so beautiful and majestic that I was very surprised.
error: surprise
correction: surprised
error_type: PoS Confusion Error
error_severity: 3
error_description: PoS Confusion Error: 〈was〉 is a linking verb, followed by an adjective as a predicative, while 〈surprise〉 is the base form of a verb; therefore, 〈surprise〉 is changed to 『surprised』 to comply with grammatical rules.

error_sentence: It's very large and beatiful.
correct_sentence: It's very large and beautiful.
error: beatiful
correction: beautiful
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the sentence meaning, it is intended to express 'beautiful', so 〈beatiful〉 is a misspelling of 『beautiful』; it needs to be changed from 〈beatiful〉 to 『beautiful』 to make the sentence coherent.

error_sentence: I think the emperors that lived there must be very happy.
correct_sentence: I think the emperors who lived there must have been very happy.
error: that
correction: who
error_type: Relative Word Error
error_severity: 3
error_description: Relative Word Error: The antecedent 〈emperors〉 refers to people, so the relative pronoun 『who』 should be used; therefore, 〈that〉 is changed to 『who』 to comply with grammatical rules.

error_sentence: I think the emperors that lived there must be very happy.
correct_sentence: I think the emperors who lived there must have been very happy.
error: be
correction: have been
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: Speculation about past emperors requires the present perfect tense to express past possibility, so 〈be〉 is changed to 『have been』 to fit the contextual tense.

error_sentence: I have only seen them on
correct_sentence: I had only seen them on TV.
error: have
correction: had
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: The verb 〈went〉 in the previous sentence is in the past tense; the past perfect tense is needed here to indicate the sequence of actions, so 〈have〉 is changed to 『had』 to fit the contextual tense.

error_sentence: TV.When
correct_sentence: I had only seen them on TV. When I walked close, I was shocked by the beauty of them and I took many photos of them.
error: TV.When
correction: TV. When
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: A space is required after a period to separate sentences, so 〈TV.When〉 is changed to 『TV. When』 to conform to punctuation conventions.

error_sentence: I walked close,I was shocked by the beauty of it
correct_sentence: When I walked close, I was shocked by the beauty of them and I took many photos of them.
error: it
correction: them
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: This refers to the previously mentioned 〈Bird's Nest Stadium and the Water Cube〉, which is plural, so 〈it〉 is changed to 『them』 to comply with grammatical rules.

error_sentence: and I took many photos of it.
correct_sentence: When I walked close, I was shocked by the beauty of them and I took many photos of them.
error: it
correction: them
error_type: Pronoun Error
error_severity: 3
error_description: Pronoun Error: This refers to the previously mentioned 〈Bird's Nest Stadium and the Water Cube〉, which is plural, so 〈it〉 is changed to 『them』 to comply with grammatical rules.

error_sentence: On the last day,I finished my perfect trip and I am looking forward to go to Beijing next time.
correct_sentence: On the last day, I finished my perfect trip and I am looking forward to going to Beijing next time.
error: go
correction: going
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: In the phrase 'look forward to', 〈to〉 is a preposition and should be followed by the gerund form, so 〈go〉 is changed to 『going』 to comply with grammatical rules.