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 friend to go to the park. To have pinpic. At the afternoon. The weather is beging to rain. I forget to take umbrella. The rain wet my body. I feel very heaache. My friends send me go to hospital. The doctor say me is have a fever. He give me some medicine. And tell me have a rest.

Corrected essay:
Last Sunday, I went to the park with my friends to have a picnic. In the afternoon, it began to rain. I forgot to take an umbrella, and the rain wet my body. I had a headache. My friends sent me to the hospital. The doctor said I had a fever. He gave me some medicine. And he told me to have a rest.

Error analysis:
error_sentence: Last Sunday. I with my friend to go to the park.
correct_sentence: Last Sunday, I went to the park with my friends to have a picnic.
error: . I with my friend to go
correction: , I went
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Punctuation Error: According to English writing conventions, the time adverbial 〈Last Sunday〉 and the main clause 〈I with my friend to go to the park〉 need to be separated by a comma, so 〈Last Sunday.〉 is changed to 『Last Sunday,』.; ② Sentence Structure Error: According to English grammar rules, the sentence 〈 I with my friend to go to the park〉 lacks a predicate verb and has a chaotic structure; based on the context, this sentence intends to express “I went to the park with my friend for a picnic,” and the time adverbial 〈Last Sunday〉 clearly indicates past tense, so the predicate verb 『went』 is needed to express the action of going to the park, making the non-finite structure 〈to go〉 redundant and should be deleted.

error_sentence: I with my friend to go to the park. To have pinpic. At the afternoon.
correct_sentence: Last Sunday, I went to the park with my friends to have a picnic. In the afternoon, it began to rain.
error: . To have pinpic. At
correction: with my friends to have a picnic. In
error_type: Preposition Error
error_severity: 4
error_description: ① Punctuation Error: According to English grammar rules, the infinitive phrase 〈To have pinpic〉 cannot stand alone as a sentence and needs to be connected to the main clause with a comma, so 〈. To have pinpic〉 is changed to 『to have a picnic』.; ② Spelling Error: According to the meaning of the sentence, it intends to express “picnic,” so 〈pinpic〉 is misspelled and should be changed to 『picnic』.; ③ Determiner Error: The countable noun 『picnic』 lacks a determiner; to make the reference clear, 『a』 needs to be added before 『picnic』 to indicate “a picnic”.; ④ Preposition Error: 〈afternoon〉 represents a period of time, so the preposition "in" should be used, thus 〈At the afternoon〉 is changed to 『In the afternoon』.

error_sentence: At the afternoon. The weather is beging to rain.
correct_sentence: In the afternoon, it began to rain.
error: . The weather is beging
correction: , it began
error_type: Verb Tense Error
error_severity: 4
error_description: ① Punctuation Error: The time adverbial 『In the afternoon』 and the main clause 〈The weather is beging to rain〉 should be separated by a comma, so 〈. The weather〉 is changed to 『, it 』.; ② Pronoun Error: According to English expression habits, weather changes should use the impersonal subject 『it』 instead of 〈The weather〉, because “weather” is an abstract concept, and using “it” makes the sentence easier to understand and more concise, so 〈The weather〉 is changed to 『it』.; ③ Verb Tense Error: According to the time marker 〈Last Sunday〉 in the preceding text, all events occurred in a past time context, so 〈is beging〉 should be changed to the past tense 『began』 to represent an action that happened in the past.

error_sentence: I forget to take umbrella.
correct_sentence: I forgot to take an umbrella, and the rain wet my body.
error: forget
correction: forgot
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: The verb 〈forget〉 has an incorrect tense; according to the context, the events in the text all happened in the past, so 〈forget〉 should be changed to 『forgot』 to conform to the temporal logic of describing past events.

error_sentence: I forget to take umbrella. The rain wet my body.
correct_sentence: I forgot to take an umbrella, and the rain wet my body.
error: umbrella. The
correction: an umbrella, and the
error_type: Determiner Error
error_severity: 2
error_description: Determiner Error: The countable noun 〈umbrella〉 lacks an indefinite article to specify the quantity, and the noun 〈umbrella〉 begins with a vowel sound, so 『an』 needs to be added before the noun 〈umbrella〉 for modification.

error_sentence: I feel very heaache.
correct_sentence: I had a headache.
error: feel very heaache
correction: had a headache
error_type: Verb Choice Error
error_severity: 4
error_description: ① Verb Choice Error: According to the sentence meaning, it intends to express “I have a headache”; when 〈feel〉 is used as a linking verb, it should be followed by an adjective, but 『headache』 is a countable noun, and according to English expression habits, “have + noun” is usually used to express “being sick,” and the entire text uses the simple past tense, so to maintain tense consistency, 〈feel〉 is changed to 『had』.; ② Determiner Error: 『headache』 is a singular countable noun and needs an indefinite article 『a』 before it to clarify the quantity.; ③ Spelling Error: According to the sentence meaning, it intends to express “headache,” so 〈heaache〉 is misspelled and should be changed to 『headache』.

error_sentence: My friends send me go to hospital.
correct_sentence: My friends sent me to the hospital.
error: send me go to
correction: sent me to the
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Verb Tense Error: The verb 〈send〉 has an incorrect tense; according to the context, the entire text describes events that happened in the past, so to ensure consistency in past tense, the past tense form 『sent』 should be used to represent an action that occurred in the past, thus 〈send〉 is changed to 『sent』.; ② Word Redundancy Error: According to the context, 〈go〉 is semantically redundant with 〈send〉, so 〈go〉 needs to be deleted to ensure the fluency of the sentence.; ③ Determiner Error: The singular countable noun 〈hospital〉 lacks a determiner to specify the object; the determiner 『the』 needs to be added to modify the noun 〈hospital〉 to comply with grammatical rules.

error_sentence: The doctor say me is have a fever.
correct_sentence: The doctor said I had a fever.
error: say me is have
correction: said I had
error_type: Word Redundancy Error
error_severity: 4
error_description: ① Verb Tense Error: According to the context, the entire text describes events that happened in the past, so to ensure consistency in past tense, 〈say〉 should be changed to the past tense 『said』, and 〈have〉 should be changed to 『had』.; ② Pronoun Error: In 〈say me is have〉, the personal pronoun 〈me〉 is used incorrectly; 〈me〉 is the objective case of the personal pronoun, used as an object or predicative in a sentence, and cannot be a subject, while “I” is the subjective case of the personal pronoun and can be a subject in a sentence, so 〈me〉 is changed to 『I』.; ③ Word Redundancy Error: The object clause introduced by 〈say〉 already has the predicate verb 『had』, making the linking verb 〈is〉 redundant, so 〈is〉 needs to be deleted.

error_sentence: He give me some medicine.
correct_sentence: He gave me some medicine.
error: give
correction: gave
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: The verb 〈give〉 has an incorrect tense; according to the context, the entire text describes past events, so to ensure tense consistency, 〈give〉 needs to be changed to 『gave』 to represent the doctor's action of providing medicine in the past.

error_sentence: And tell me have a rest.
correct_sentence: And he told me to have a rest.
error: tell me
correction: he told me to
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Sentence Structure Error: According to English grammar rules, the sentence 〈And tell me have a rest〉 lacks a subject; 『he』 needs to be added to clarify the agent of the action 〈tell〉, so 〈tell me 〉 is changed to 『he told me』.; ② Verb Tense Error: According to the context, the entire text describes past events, so 『tell』 needs to be changed to the past tense 『told』 to fit the context of describing past events.; ③ Nonfinite Verb Form Error: The sentence 〈And tell me have a rest〉 already has the predicate verb 〈tell〉; 『to』 needs to be added before 〈have〉 to form a complete infinitive structure, indicating “the specific action the doctor told me to do”.