Writing prompt: Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay.
Writing hints: summer vacation, village, river, go fishing, tree house...; Reference sentence patterns: There was... There were...
Assume you are Jimmy; based on the picture and hints, describe what you saw and did at your aunt's house last summer vacation.

Student essay:
I am Jimmy. Last summer vacation, I had a fun time in my aunt' s home. There was a beautiful village and river. My sister and I sat on the bank of river to going fishing. There were many kids played with each other in tree house. We were happ to stay here.

Corrected essay:
I am Jimmy. Last summer vacation, I had a fun time in my aunt's home. There was a beautiful village and a river. My sister and I sat on the bank of the river to go fishing. There were many kids playing with each other in the tree house. We were happy to stay there.

Error analysis:
error_sentence: Last summer vacation, I had a fun time in my aunt' s home.
correct_sentence: Last summer vacation, I had a fun time in my aunt's home.
error: ' s
correction: 's
error_type: Space Error
error_severity: 3
error_description: Space Error: According to English grammar rules, the noun possessive form requires 『's』 to be added directly after the noun without a space between the punctuation mark and the letter; therefore, 〈aunt' s〉 is corrected to 『aunt's』 to correctly represent the possessive relationship.
error_sentence: There was a beautiful village and river.
correct_sentence: There was a beautiful village and a river.
correction: a
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: In the parallel structure 〈a beautiful village and river〉, the second noun 〈river〉, being a singular countable noun, requires the determiner 『a』 to ensure structural symmetry and grammatical correctness; therefore, 『a』 is added before 〈river〉.
error_sentence: My sister and I sat on the bank of river to going fishing.
correct_sentence: My sister and I sat on the bank of the river to go fishing.
correction: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to English grammar rules, 『the』 is used to refer to specific, known things; here, it specifically refers to the previously mentioned 〈river〉, requiring the definite article 『the』 to clarify the reference; therefore, 『the』 is added before 〈river〉 to specify the intended meaning.
error_sentence: My sister and I sat on the bank of river to going fishing.
correct_sentence: My sister and I sat on the bank of the river to go fishing.
error: going
correction: go
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: In the infinitive structure, 〈to〉 should be followed by the base form of the verb 『go』, not the gerund 〈going〉; therefore, 〈going〉 is corrected to 『go』 to comply with grammatical rules.
error_sentence: There were many kids played with each other in tree house.
correct_sentence: There were many kids playing with each other in the tree house.
error: played
correction: playing
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: The verb form in 〈There were many kids played〉 leads to a sentence structure error; 〈played〉 should be changed to the present participle 『playing』 acting as a post-modifier, forming 『kids playing with each other』.
error_sentence: There were many kids played with each other in tree house.
correct_sentence: There were many kids playing with each other in the tree house.
correction: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: Based on the prompt, this refers specifically to the 〈tree house〉 shown in the picture, requiring the definite article 『the』 to clearly identify the unique object; therefore, 『the』 should be added before 〈tree〉.
error_sentence: We were happ to stay here.
correct_sentence: We were happy to stay there.
error: happ
correction: happy
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: According to the sentence's meaning, the intended word is 'happy'; therefore, 〈happ〉 is a misspelling of 『happy』 and needs to be corrected to 『happy』 for the sentence to make sense.
error_sentence: We were happ to stay here.
correct_sentence: We were happy to stay there.
error: here
correction: there
error_type: Adverb Error
error_severity: 3
error_description: Adverb Error: According to English grammar rules, when describing a location experienced in the past, the distal adverb 『there』 should be used instead of the proximal adverb 〈here〉; therefore, 〈here〉 is changed to 『there』 to maintain spatio-temporal consistency.