Writing prompt: Based on the given hints and referring to the picture, write a short essay.
Last Sunday, I went for a picnic in the park with my friends. It started raining in the afternoon. I forgot my umbrella and got wet. I felt cold and had a headache. My friends took me to the hospital. The doctor said I had a fever. He gave me some medicine and told me to go home and rest well.
Writing hints: picnic; rain; umbrella; get wet; hospital; fever; medicine.

Student essay:
Last Sunday, I with my friends w3nt to park . Afternoon was rainy, I did't have umbrella, I geted wet. I was cool and headache. My friends with me went to hospital. Doctor said me is fever. And he give medicine.

Corrected essay:
Last Sunday, my friends and I went to the park. In the afternoon, it was rainy, but I didn't have an umbrella, so I got wet. I was cold and had a headache. My friends took me to the hospital. The doctor said I had a fever, and he gave me medicine.

Error analysis:
error_sentence: Last Sunday, I with my friends w3nt to park .
correct_sentence: Last Sunday, my friends and I went to the park.
error: I with
error_type: Word Order Error
error_severity: 5
error_description: ① Word Order Error: English convention for coordinate subjects places the third person before the first person out of respect; here, 〈I with〉 should be removed from 〈I with my friends〉, and 『and I』 should be added after 〈my friends〉 to conform to standard English expression.
error_sentence: Last Sunday, I with my friends w3nt to park .
correct_sentence: Last Sunday, my friends and I went to the park.
error: w3nt to
correction: and I went to the
error_type: Conjunction Error
error_severity: 5
error_description: ① Conjunction Error: 『my friends and I』 is the standard English expression, so the preposition 〈with〉 needs to be changed to the conjunction 『and』 to better conform to standard English expression; ② Spelling Error: According to the context, this describes a past action, so 〈w3nt〉 should be spelled as 『went』, which is the correct past tense form of the verb; ③ Determiner Error: In English, "go to the park" is a fixed phrase, so the definite article 〈the〉 needs to be added here to form the complete structure 『went to the park』, conforming to the fixed English phrase.
error_sentence: Afternoon was rainy, I did't have umbrella, I geted wet.
correct_sentence: In the afternoon, it was rainy, but I didn't have an umbrella, so I got wet.
error: Afternoon
correction: In the afternoon, it
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Preposition Error: The word afternoon cannot stand alone at the beginning of a sentence as a time adverbial; the fixed phrase in English for "in the afternoon" is the prepositional phrase 『in the afternoon』 used as a time adverbial. The preposition 『in』 is missing here, so 〈Afternoon〉 needs to be changed to 『In the afternoon』 to conform to English grammar rules and fixed phrases; ② Determiner Error: According to English grammar rules, when afternoon serves as a time adverbial, the fixed phrase is 『in the afternoon』, requiring the determiner 『the』 before 〈Afternoon〉 to ensure the standard expression of the time adverbial; ③ Sentence Structure Error: The meaning here is "it rained in the afternoon." The sentence lacks a subject. In English, 『it』 is commonly used as the subject when describing weather conditions, so 『, it 』 should be added before 〈was〉 to form a complete subject-verb-object structure, conforming to English syntactic rules.
error_sentence: Afternoon was rainy, I did't have umbrella, I geted wet.
correct_sentence: In the afternoon, it was rainy, but I didn't have an umbrella, so I got wet.
error: I did't have
correction: but I didn't have an
error_type: Conjunction Error
error_severity: 5
error_description: ① Conjunction Error: According to the context, there should be a semantic contrast, "It was rainy, but I didn't have an umbrella," so the conjunction 『but 』 should be added before 〈I〉 to indicate the contrast and make the sentences more coherent; ② Contraction Error: The correct contraction for the past tense auxiliary verb 〈did't〉 should be 『didn't』 to conform to English spelling rules; the letter "n" was omitted; ③ Determiner Error: According to English grammar rules, the singular countable noun 〈umbrella〉 requires the indefinite article 『an』 before it for modification, conforming to English grammar rules.
error_sentence: Afternoon was rainy, I did't have umbrella, I geted wet.
correct_sentence: In the afternoon, it was rainy, but I didn't have an umbrella, so I got wet.
error: I geted
correction: so I got
error_type: Conjunction Error
error_severity: 5
error_description: ① Conjunction Error: Based on the context, the meaning is "because I didn't have an umbrella, so I got wet," therefore the conjunction 『so 』 should be added before 〈I〉 to indicate the cause-and-effect relationship between the two clauses, making the logic clearer; ② Spelling Error: The simple past tense of the verb get is got, so 〈geted〉 should be changed to 『got』 to conform to English spelling rules.
error_sentence: I was cool and headache.
correct_sentence: I was cold and had a headache.
error: cool and
correction: cold and had a
error_type: Adjective Error
error_severity: 5
error_description: ① Adjective Error: According to the sentence's meaning, cool means "pleasantly low temperature," often used in neutral or positive contexts, while cold means "uncomfortably low temperature." It's clear the author felt unwell, so 〈cool〉 does not fit the intended meaning of "cold" and should be changed to 『cold』 to match the context; ② Verb Choice Error: Following the subject "I," there is a subject-complement structure and a subject-verb-object structure. A predicate verb is needed. The English verb phrase for headache is 『have a headache』. Since this is in the simple past tense, 『had a』 should be added before 〈headache〉 to fit the context and meaning; ③ Determiner Error: The fixed phrase for having a headache is 『have a headache』, so 『a 』 needs to be added before 〈headache〉 to conform to the fixed English phrase.
error_sentence: My friends with me went to hospital.
correct_sentence: My friends took me to the hospital.
error: with me went to
correction: took me to the
error_type: Word Redundancy Error
error_severity: 5
error_description: ① Verb Choice Error: According to the context, the meaning is "my friends took me to the hospital." 〈with〉 is a preposition, so a predicate verb is missing. The prepositional phrase 〈with me〉 should be changed to the verb phrase 『took me』 to match the original meaning; ② Word Redundancy Error: The fixed English phrase for taking someone somewhere is "take somebody to somewhere." Here, 〈went〉 is redundant and needs to be deleted to conform to the fixed phrase, resulting in the correct expression 『took me to』; ③ Determiner Error: The fixed English phrase for going to the hospital is "go to the hospital," so the definite article 『the 』 needs to be added before 〈hospital〉 in the original sentence to conform to the fixed English phrase.
error_sentence: Doctor said me is fever. And he give medicine.
correct_sentence: The doctor said I had a fever, and he gave me medicine.
error: Doctor said me is fever. And he give
correction: The doctor said I had a fever, and he gave me
error_type: Subject-Verb Agreement Error
error_severity: 5
error_description: ① Determiner Error: The noun doctor, referring to a profession, requires a definite article for modification, and since it's at the beginning of the sentence, 〈Doctor〉 should be changed to 『The doctor』; ② Sentence Structure Error: In 〈said me〉, said introduces an object clause. The subject-verb-object structure of the following object clause should be complete, so it should be changed to 『said I had a fever』 to conform to English syntactic rules; ③ Determiner Error: The fixed English phrase for having a fever is "have a fever," so the indefinite article 『a』 needs to be added before 〈fever〉 to conform to the fixed English phrase; ④ Verb Tense Error: This describes a past action, requiring the simple past tense of the verb, so 〈give〉 should be changed to the simple past form 『gave』 to conform to English verb tense rules; ⑤ Punctuation Error: According to the sentence meaning, the actions in 〈Doctor said me is fever. And he give medicine.〉 are sequential, so the period 〈.〉 should be changed to a comma 『,』 and the capitalization adjusted to 『, and』; ⑥ Pronoun Error: This involves a double object structure introduced by give. The fixed English pattern is "give somebody something." Here, 〈medicine〉 corresponds to something, so 『me』 needs to be added before 〈medicine〉 to complete the double object structure.