Writing prompt: Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay. It is 3 PM. Based on the information provided below about Linda, use the present continuous tense to describe what Linda sees and hears at the mall:
Writing hints:
A little girl: buy some food
A young lady: look at a dress
Linda's mother: try on the shoes
Linda's father: stay on the sofa; wait for

Student essay:
now is 3:00 at afternoon i am in the shoproom i see a girl buy some food. a young lady is looking for the clothes i am taking the shoes my father is waiting for me.

Corrected essay:
Now it is 3:00 in the afternoon, and I am in the shop room. I see a girl buying some food. A young lady is looking at a dress. My mother is trying on the shoes. My father is waiting for me.

Error analysis:
error_sentence: now is 3:00 at afternoon i am in the shoproom i see a girl buy some food.
correct_sentence: Now it is 3:00 in the afternoon, and I am in the shop room.
error: now
correction: Now it
error_type: Sentence Structure Error
error_severity: 4
error_description: ① Sentence Structure Error: According to English grammar rules, a complete subject-verb structure is required when expressing time. The original sentence 〈now is 3:00〉 lacks the subject 〈it〉, making the sentence incomplete. 〈it〉 should be added after 〈now〉 to form "Now it is 3:00", completing the sentence structure; ② Case Error: According to English writing conventions, the first letter of the word at the beginning of a sentence must be capitalized. In the original sentence, 〈now〉 is not capitalized as the first word, which does not meet the requirement. 〈now〉 should be changed to the capitalized form 『Now』 to comply with English writing requirements.

error_sentence: now is 3:00 at afternoon i am in the shoproom i see a girl buy some food.
correct_sentence: Now it is 3:00 in the afternoon, and I am in the shop room.
error: at afternoon i
correction: in the afternoon, and I
error_type: Conjunction Error
error_severity: 3
error_description: ① Conjunction Error: According to English grammar rules, the original sentence lacks a conjunction between the two independent clauses 『Now it is 3:00 in the afternoon』 and 『I am in the shop room』. The conjunction 〈and〉 should be added to make the sentence structure complete and grammatically correct; ② Preposition Error: When expressing the time period "in the afternoon", the fixed English expression is "in the afternoon". Using 〈at afternoon〉 in the original sentence is incorrect. The preposition 〈at〉 should be changed to 〈in〉, and the determiner 〈the〉 should be added to express the time correctly; ③ Case Error: According to English writing conventions, the first-person singular pronoun 〈i〉 should be capitalized in a sentence. In the original sentence, 〈i〉 is not capitalized, which does not meet the requirement. It needs to be changed to the capitalized form 『I』 to make the sentence writing correct.

error_sentence: now is 3:00 at afternoon i am in the shoproom i see a girl buy some food.
correct_sentence: Now it is 3:00 in the afternoon, and I am in the shop room. I see a girl buying some food.
error: shoproom i
correction: shop room. I
error_type: Punctuation Error
error_severity: 2
error_description: ① Space Error: In the original sentence, "shoproom" is a compound noun, which should be split into "shop room" according to English conventions. The original sentence lacks the necessary space and needs correction by adding a space; ② Punctuation Error: In the original sentence, there is no punctuation separating the two independent clauses 〈i am in the shoproom〉 and 〈i see a girl buy some food〉. According to English grammar, independent clauses should be separated by a period. A period should be added after "shop room" to make the sentence structure clear and grammatically correct; ③ Case Error: According to English writing conventions, the first-person singular pronoun 〈i〉 should be capitalized in a sentence. In the original sentence, 〈i〉 is not capitalized, which does not meet the requirement. It needs to be changed to the capitalized form 『I』 to make the sentence writing correct.

error_sentence: now is 3:00 at afternoon i am in the shoproom i see a girl buy some food.
correct_sentence: I see a girl buying some food.
error: buy
correction: buying
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: According to English grammar rules, when the sensory verb 〈see〉 is followed by an object complement, the present participle form is required to indicate an ongoing action. In the original phrase "see a girl buy some food", 〈buy〉 is the base form of the verb, which does not meet the grammatical requirement. 〈buy〉 should be changed to the present participle form 『buying』 to form the structure "see a girl buying some food", making the sentence grammatically correct and accurately expressing the meaning "see a girl buying food".

error_sentence: a young lady is looking for the clothes i am taking the shoes my father is waiting for me.
correct_sentence: A young lady is looking at a dress.
error: a
correction: A
error_type: Case Error
error_severity: 1
error_description: Case Error: According to English writing conventions, the first letter of the word at the beginning of a sentence must be capitalized. In the original sentence, the indefinite article 〈a〉 at the beginning is not capitalized, which does not meet the requirement. 〈a〉 should be changed to the capitalized form 『A』 to make the sentence comply with English writing conventions.

error_sentence: a young lady is looking for the clothes i am taking the shoes my father is waiting for me.
correct_sentence: A young lady is looking at a dress. My mother is trying on the shoes.
error: for the clothes i am taking
correction: at a dress. My mother is trying on
error_type: Verb Choice Error
error_severity: 4
error_description: ① Verb Choice Error: According to English usage, "look for" means "to search", while the context of the original sentence is "to gaze at" a dress, which should use "look at". Using 〈look for〉 in the original sentence is a misuse of the phrasal verb; 〈for〉 needs to be changed to 『at』; ② Noun Error: In the original sentence, 〈clothes〉 means "clothing (general term)", which does not match the specific "dress" indicated by the picture prompt and context. 〈clothes〉 should be changed to 『a dress』 to make the expression fit the context; ③ Sentence Structure Error: The content of the original sentence "i am taking the shoes" does not fit the prompt's intention. According to the prompt requirements and context, content related to "My mother is trying on" needs to be added to fully describe the subsequent scene and make the sentence logically coherent.

error_sentence: a young lady is looking for the clothes i am taking the shoes my father is waiting for me.
correct_sentence: My mother is trying on the shoes. My father is waiting for me.
error: my
correction: . My
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the two independent sentences "i am taking the shoes" and "my father is waiting for me" need to be separated by a period. In the original sentence, the two independent sentences are not separated by a period, leading to a confusing sentence structure. A period 『.』 should be added at the end of the preceding sentence, changing it to 『. My』 to make the sentence structure clear.