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, Iand my friends go to park in picnic, In the afternoon, the weather is ranning, l don't umbrella, and I get wet. I feel like cold and headache. My friends go to hospital with me. The dacthor says I fever, he give me some medicine and go back home, rest.

Corrected essay:
Last Sunday, my friends and I went to the park for a picnic. In the afternoon, the weather was rainy. I didn't have an umbrella, and I 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 back home and rest.

Error analysis:
error_sentence: Last Sunday, Iand my friends go to park in picnic, In the afternoon, the weather is ranning, l don't umbrella, and I get wet.
correct_sentence: Last Sunday, my friends and I went to the park for a picnic.
error: Iand
error_type: Word Order Error
error_severity: 4
error_description: ① Space Error: Based on the sentence meaning, the lack of a necessary space between the word "I" and the conjunction "and" causes word adhesion and semantic ambiguity; 〈Iand〉 needs to be changed to 『I and』 to conform to the original meaning and syntactic rules; ② Word Order Error: According to English expression conventions, when a first-person pronoun and a third-person noun phrase are used as coordinate subjects, the third-person phrase should precede the first-person pronoun out of respect; therefore, the word order needs to be adjusted, changing 〈I and my friends〉 to 『my friends and I』 to align with English expression habits.

error_sentence: Last Sunday, Iand my friends go to park in picnic, In the afternoon, the weather is ranning, l don't umbrella, and I get wet.
correct_sentence: Last Sunday, my friends and I went to the park for a picnic.
error: go to park in picnic,
correction: and I went to the park for a picnic.
error_type: Verb Tense Error
error_severity: 4
error_description: ① Verb Tense Error: According to the context, the original tense is the simple past; the base form verb 〈go〉 should be changed to the simple past form 『went』 to match the context tense; ② Determiner Error: Based on the sentence meaning, the park here refers to a specific park, so the definite article 『the』 needs to be added before the singular countable noun 〈park〉 to comply with English grammar rules; according to English grammar rules, "picnic" in the phrase "go for a picnic" is a singular countable noun, so the indefinite article 『a』 needs to be added before 〈picnic〉 for determination to comply with English grammar rules; ③ Preposition Error: According to the English fixed phrase, the expression for "go for a picnic" is "go for a picnic"; the preposition here can be understood as indicating purpose, so 〈in〉 needs to be changed to 『for a』 to conform to the English fixed phrase.

error_sentence: Last Sunday, Iand my friends go to park in picnic, In the afternoon, the weather is ranning, l don't umbrella, and I get wet.
correct_sentence: In the afternoon, the weather was rainy. I didn't have an umbrella, and I got wet.
error: is ranning, l don't
correction: was rainy. I didn't have an
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Verb Tense Error: According to the context, the original tense is the simple past; the be-verb 〈is〉 should be changed to the simple past form 『was』 to match the context tense; ② Adjective Error: Based on the sentence meaning, the adjective "rainy" should be used to describe the weather; therefore, the incorrect word 〈ranning〉 needs to be changed to the adjective 『rainy』 to conform to the original meaning; ③ Punctuation Error: According to the sentence structure, 〈the weather is ranning〉 and 〈l don't umbrella〉 are two independent clauses and cannot be connected solely by a comma; thus, the comma 〈,〉 should be changed to a period 『.』; ④ Spelling Error: Based on the sentence meaning, the first-person subject pronoun "I" should be used here; thus, 〈l〉 in the original sentence is a spelling error and needs to be changed to 『I』; ⑤ Verb Tense Error: According to the context, the original tense is the simple past; the negative auxiliary verb 〈don't〉 should be changed to the simple past form 『didn't』 to match the context tense; ⑥ Sentence Structure Error: Based on the sentence meaning, the intention is to express "I didn't have an umbrella"; therefore, the predicate verb and the indefinite article before the singular noun need to be added, changing the sentence to 『I didn't have an umbrella』 to make the sentence structure complete and conform to the original meaning.

error_sentence: Last Sunday, Iand my friends go to park in picnic, In the afternoon, the weather is ranning, l don't umbrella, and I get wet.
correct_sentence: I didn't have an umbrella, and I got wet.
error: get
correction: got
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to the context, the original tense is the simple past, thus there is a verb tense error here. The base form verb 〈get〉 should be changed to the simple past form 『got』 to match the context tense.

error_sentence: I feel like cold and headache.
correct_sentence: I felt cold and had a headache.
error: feel like
correction: felt
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Verb Tense Error: According to the context, the original tense is the simple past, thus there is a verb tense error here. The base form verb 〈feel〉 should be changed to the simple past form 『felt』 to match the context tense; ② Word Redundancy Error: The English phrasal verb "feel like" means "to want," whereas according to the sentence meaning, it refers to "I felt cold"; the linking verb "feel" meaning "to sense" should be used, so the redundant preposition 〈like〉 needs to be deleted to conform to the original meaning.

error_sentence: I feel like cold and headache.
correct_sentence: I felt cold and had a headache.
correction: had a
error_type: Sentence Structure Error
error_severity: 4
error_description: Sentence Structure Error: Based on the sentence meaning, it refers to "I had a headache"; the conjunction 〈and〉 should connect two parallel verb phrases, so the predicate verb is missing here, resulting in a sentence structure error. According to the English fixed phrase, the verb phrase for "headache" is "have a headache"; therefore, 『had a』 needs to be added before the singular countable noun 〈headache〉 to complete the verb phrase, conforming to the fixed phrase and the original meaning.

error_sentence: My friends go to hospital with me.
correct_sentence: My friends took me to the hospital.
error: go to hospital with me
correction: took me to the hospital
error_type: Verb Choice Error
error_severity: 4
error_description: ① Verb Choice Error: The English phrasal verb "go (to) somewhere with somebody" means "to go somewhere together with someone"; based on the prompt and sentence meaning, the phrasal verb "take somebody to somewhere" more accurately expresses the active behavior of "bringing someone somewhere," so 〈go to hospital with me〉 needs to be changed to 『took me to hospital』 to conform to the original meaning; ② Determiner Error: Based on the sentence meaning, "hospital" here refers to a specific one, so the definite article 『the』 needs to be added before the singular noun 〈hospital〉 to indicate specificity and comply with English grammar rules.

error_sentence: The dacthor says I fever, he give me some medicine and go back home, rest.
correct_sentence: The doctor said I had a fever. He gave me some medicine and told me to go back home and rest.
error: dacthor says I fever, he give
correction: doctor said I had a fever. He gave
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Spelling Error: According to English spelling conventions, the correct spelling for "医生" is "doctor"; the incorrect word 〈dacthor〉 needs to be changed to 『doctor』 to comply with English spelling conventions; ② Verb Tense Error: According to the context, the original tense is the simple past, thus there is a verb tense error here. The verb 〈says〉 should be changed to the simple past form 『said』 to match the context tense; ③ Sentence Structure Error: 〈I fever〉 is the content of the object clause following the verb 〈said〉; 『had a』 needs to be added to form complete sentence components for the object clause to conform to the original meaning and syntactic rules; ④ Punctuation Error: According to English writing conventions, 〈The doctor said I had a fever〉 and 〈he give...〉 contain independent subject-verb structures and can stand as separate sentences, so 〈, he give...〉 needs to be changed to 〈. He give...〉 to form two independent sentences; ⑤ Verb Tense Error: According to the context, the original tense is the simple past, thus there is a verb tense error here. The base form verb 〈give〉 should be changed to the simple past form 『gave』 to match the context tense.

error_sentence: The dacthor says I fever, he give me some medicine and go back home, rest.
correct_sentence: He gave me some medicine and told me to go back home and rest.
correction: told me to
error_type: Verb Choice Error
error_severity: 3
error_description: Verb Choice Error: According to the English fixed phrase, the verb phrase "tell somebody to do something" means "to tell someone to do something," implying an instruction. Based on the prompt and the sentence meaning, it refers to "the doctor told me to go home and rest well"; "go home and rest well" is equivalent to "do something." The predicate verb with an instructional meaning and the infinitive marker "to" are missing here, constituting a verb choice error. 『told me to』 needs to be added before 〈go back home〉 to conform to the English fixed phrase and the original meaning.

error_sentence: The dacthor says I fever, he give me some medicine and go back home, rest.
correct_sentence: He gave me some medicine and told me to go back home and rest.
error: ,
correction: and
error_type: Conjunction Error
error_severity: 3
error_description: Conjunction Error: According to English syntactic rules, the last two verb phrases expressing actions in the same clause should be connected by the coordinating conjunction "and"; therefore, there is a conjunction error here. The comma 〈,〉 needs to be changed to the coordinating conjunction 『and』 to comply with English syntactic rules.