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:
In the next week. I and friends go to the picnic in park. The aftertoon start rain. I forget take umbrella, get wet. I feel very cold and headache. Friends save my to the hospital. Doctor say my fever. He give me medicine and go home shy.

Corrected essay:
Last week, my friends and I went for a picnic in the park. In the afternoon, it started to rain. I forgot to take an umbrella, so I got wet. I felt very cold and had a headache. My friends took me to the hospital. The doctor said I had a fever. He gave me medicine and I went home and rested.

Error analysis:
error_sentence: In the next week. I and friends go to the picnic in park.
correct_sentence: Last week, my friends and I went for a picnic in the park.
error: In the next week. I and friends go to the
correction: Last week, my friends and I went for a
error_type: Word Redundancy Error
error_severity: 5
error_description: ① Word Redundancy Error: According to English time expression conventions, 〈in the〉 in the time adverbial 〈In the next week〉 is redundant; using the adverbial phrase directly is sufficient, so the redundant prepositional phrase is deleted and changed to 『next week』; ② Adjective Error: Based on the principle of context tense consistency, the time adverbial 〈next week〉 is grammatically incorrect for describing past events; it needs to be adjusted to an adverbial phrase indicating past time, thus changed to 『last week』; ③ Pronoun Error: According to English grammar rules, 〈I and friends〉 lacks a possessive pronoun to modify 〈friends〉; a determiner needs to be added, thus changed to 『my friends and I』; ④ Word Order Error: According to English pronoun order norms, 〈I and friends〉 does not follow the convention of 'third person before first person'; the order needs to be adjusted and a possessive pronoun added, thus changed to 『my friends and I』; ⑤ Verb Tense Error: Based on the past time reference of the time adverbial 〈last week〉, the predicate verb 〈go〉 needs to be changed to the past tense to maintain tense consistency, thus changed to 『went』; ⑥ Preposition Error: According to English collocations, 〈to〉 in 〈go to the picnic〉 does not fit the usage of 'go for + activity noun', thus changed to 『go for a picnic』; ⑦ Determiner Error: According to English article usage rules, the definite article 〈the〉 in 〈go to the picnic〉 specifies a particular picnic, but the context does not specify it; it needs to be changed to an indefinite article for general reference, thus changed to 『go for a picnic』.

error_sentence: I and friends go to the picnic in park.
correct_sentence: Last week, my friends and I went for a picnic in the park.
correction: the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: According to English grammar rules, the singular countable noun 〈park〉 must be preceded by a determiner. Since the context does not explicitly mention a specific park name but implies a specific place known to both speaker and listener, the definite article 『the』 needs to be added for specific reference, changing it to 『the park』 to comply with grammatical rules.

error_sentence: The aftertoon start rain.
correct_sentence: In the afternoon, it started to rain.
error: The aftertoon start
correction: In the afternoon, it started to
error_type: Verb Tense Error
error_severity: 5
error_description: ① Preposition Error: According to English time expression norms, the time adverbial 〈The afternoon〉 lacks a preceding preposition; 〈in〉 needs to be added to form the fixed phrase, thus changed to 『In the afternoon』; ② Spelling Error: According to English spelling rules, 〈aftertoon〉 is misspelled; the correct form should be 『afternoon』, thus changed to 『afternoon』; ③ Pronoun Error: According to English grammar rules, 〈start rain〉 lacks a dummy subject and requires an infinitive structure; the dummy subject 『it』 is added and the structure adjusted, changing it to 『it started to rain』; ④ Verb Tense Error: Based on the principle of context tense consistency, 〈start〉 is in the present simple tense, but the sentence describes a past event; it needs to be changed to the past tense, thus changed to 『started』; ⑤ Nonfinite Verb Form Error: According to English verb collocation rules, 〈start rain〉 does not conform to the 'start + to do' usage; it needs to be changed to an infinitive structure, thus changed to 『started to rain』 to comply with grammar.

error_sentence: I forget take umbrella, get wet.
correct_sentence: I forgot to take an umbrella, so I got wet.
error: forget take
correction: forgot to take an
error_type: Verb Tense Error
error_severity: 5
error_description: ① Verb Tense Error: Based on the principle of context tense consistency, the action of 〈forget〉 occurred in the past and should use the past tense form; therefore, the base verb 〈forget〉 is changed to the past tense verb 『forgot』 to meet the grammatical requirements of the simple past tense; ② Nonfinite Verb Form Error: According to English infinitive structure norms, when the verb 〈take〉 serves as an adverbial of purpose, it needs to form a complete infinitive structure with 『to』; therefore, the infinitive marker 『to』 is added before the base verb 〈take〉, forming the correct infinitive phrase 『to take』; ③ Determiner Error: According to English article usage rules, the singular countable noun 〈umbrella〉, when mentioned for the first time and referring generally, requires an indefinite article; since 〈umbrella〉 begins with a vowel sound, the article 『an』 is added, changing 〈umbrella〉 to 『an umbrella』 to comply with article usage norms.

error_sentence: I forget take umbrella, get wet.
correct_sentence: I forgot to take an umbrella, so I got wet.
error: get
correction: so I got
error_type: Conjunction Error
error_severity: 5
error_description: ① Conjunction Error: According to English compound sentence connection norms, when there is a causal relationship between two clauses, a conjunction is needed. The original sentence lacks a causal conjunction; therefore, the result conjunction 『so』 is added in the appropriate place to make the sentence structure complete; ② Pronoun Error: The original phrase 〈get wet〉 lacks a subject; according to the sentence meaning, the pronoun 『I』 needs to be added to make the sentence structure complete; ③ Verb Tense Error: Based on the principle of context tense consistency, the action represented by 〈get〉 occurred in the past and should use the past tense form. Therefore, the present simple verb 〈get〉 is changed to the past tense verb 『got』 to meet the grammatical requirements of the simple past tense.

error_sentence: I feel very cold and headache.
correct_sentence: I felt very cold and had a headache.
error: feel
correction: felt
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to English grammar rules, when describing a state or action that occurred in the past, the predicate verb needs to be in the past tense. In the original sentence, 〈feel〉 is in the present simple form, which is inconsistent with the past time context; therefore, the base verb 〈feel〉 is changed to the past tense verb 『felt』 to maintain tense consistency and accurately express the past state.

error_sentence: I feel very cold and headache.
correct_sentence: I felt very cold and had a headache.
correction: had a
error_type: Verb Choice Error
error_severity: 3
error_description: Verb Choice Error: According to English verb-object collocation rules, the noun 〈headache〉, when used as a symptom description, needs to be paired with an action verb. The original sentence lacks a predicate verb that matches 〈headache〉; therefore, 『had a』 is added to form the fixed expression 『had a headache』, conforming to the idiomatic structure 'have + a + symptom noun'.

error_sentence: Friends save my to the hospital.
correct_sentence: My friends took me to the hospital.
error: Friends save my
correction: My friends took me
error_type: Verb Choice Error
error_severity: 5
error_description: ① Pronoun Error: According to English noun possessive expression norms, when the common noun 〈Friends〉 is used alone, a possessive determiner needs to be added to clarify the relationship. According to the sentence meaning, 『My』 should be added to form 『My friends』, which both complies with grammatical rules and clearly expresses the relationship; ② Verb Choice Error: Based on the context's action description, 〈save〉 (to preserve) does not match the intended meaning of 'carrying'; the more accurate verb 『took』 (carried/took) should be used to reflect the actual action, thus 〈save〉 is changed to 『took』 to fit the semantic logic; ③ Pronoun Error: According to English pronoun case usage rules, when a personal pronoun functions as the object of a verb, the objective case form should be used. The original sentence incorrectly uses the possessive adjective 〈my〉; it should be changed to the objective pronoun 『me』 to form the correct verb-object structure.

error_sentence: Doctor say my fever.
correct_sentence: The doctor said I had a fever.
error: Doctor say my
correction: The doctor said I had a
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Determiner Error: According to English article usage rules, when referring to a specific and known professional identity, the definite article needs to be added for specific reference. Adding 『The』 before 〈Doctor〉 forms 『The doctor』, which aligns with the convention of referring to a specific doctor in a medical context and satisfies grammatical norms; ② Verb Tense Error: Based on the principle of English tense consistency, when describing a past conversation, the reporting verb needs to be in the past tense. In the original sentence, 〈say〉 is in the present simple tense, inconsistent with the past time context, thus changed to the past tense 『said』 to accurately express the past speech act; ③ Pronoun Error: According to English subjective case usage norms, when serving as the subject of a sentence, a subjective pronoun should be used. The original sentence incorrectly uses the possessive adjective 〈my〉; it should be changed to the subjective pronoun 『I』 to ensure the correct subject form; ④ Sentence Structure Error: According to basic English sentence structure requirements, a complete sentence must contain a subject and a predicate. The original phrase 〈my fever〉 lacks a predicate component; therefore, it is restructured into the subject-verb-object structure 『I had a fever』 to make the sentence grammatically complete; ⑤ Determiner Error: Following English symptom expression norms, the countable noun 〈fever〉, when indicating a medical symptom, needs to be paired with an indefinite article. Adding 『a』 forms the fixed phrase 『a fever』, which aligns with medical English expression conventions and meets the usage requirements for singular countable nouns.

error_sentence: He give me medicine and go home shy.
correct_sentence: He gave me medicine and I went home and rested.
error: give
correction: gave
error_type: Verb Tense Error
error_severity: 2
error_description: Verb Tense Error: According to English grammar rules, when describing a state or action that occurred in the past, the predicate verb needs to be in the past tense. In the original sentence, 〈give〉 is in the present simple form, which is inconsistent with the past time context; therefore, the base verb 〈give〉 is changed to the past tense verb 『gave』 to maintain tense consistency and accurately express the past state.

error_sentence: He give me medicine and go home shy.
correct_sentence: He gave me medicine and I went home and rested.
error: go home shy
correction: I went home and rested
error_type: Conjunction Error
error_severity: 5
error_description: ① Pronoun Error: According to basic English syntactic structure requirements, a declarative sentence must contain a clear subject. The original sentence lacks the performer of the action; based on the prompt's context, the first-person subjective pronoun 『I』 needs to be added as the subject, forming the complete subject-verb structure 『I went home』; ② Verb Tense Error: According to English past tense usage rules, when describing a completed action, the predicate verb needs to be in the past tense. The original verb 〈go〉 is in the present simple tense, inconsistent with the past time frame, thus changed to the past tense 『went』, forming the structure 『I went home』 which conforms to the tense requirement; ③ Conjunction Error: Following English parallel structure norms, when narrating two consecutive actions, a coordinating conjunction is needed to connect them. Adding 『and』 between 『went home』 and 『rested』 forms 『went home and rested』, which complies with English parallel structure and clarifies the logical relationship between the two actions; ④ Verb Choice Error: Based on semantic analysis of the prompt, 〈shy〉 (bashful) is an adjective and completely inconsistent with the contextual requirement of 'go home and rest well'. It should be changed to the action verb 『rested』 (to rest), accurately expressing the logical subsequent action after returning home.