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 p.m.Linda see a little girl is buying some food. A young lady is looking at a dress. And Linda's mother is trying the shoes. Her father is staying on the sofa and wait for her mother.

Corrected essay:
Now it is 3:00 p.m. Linda sees a little girl buying some food. A young lady is looking at a dress. And Linda's mother is trying on the shoes. Her father is staying on the sofa and waiting for her mother.

Error analysis:
error_sentence: Now is 3:00 p.m.
correct_sentence: Now it is 3:00 p.m. Linda sees a little girl buying some food.
correction: it
error_type: Sentence Structure Error
error_severity: 3
error_description: Sentence Structure Error: According to English grammar rules, a complete subject-verb-complement structure is required when expressing time. The original sentence 〈Now is〉 lacks a subject and has an incomplete structure; the formal subject 〈it〉 should be added, changing 〈Now is〉 to 『Now it is』 to form a complete subject-verb-complement structure.
error_sentence: Linda see a little girl is buying some food.
correct_sentence: Now it is 3:00 p.m. Linda sees a little girl buying some food.
error: see
correction: sees
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: According to English grammar rules, when the subject is a third-person singular, the present tense verb must be in its singular form. In the original sentence, the subject 〈Linda〉 is third-person singular, while the verb 〈see〉 is in its base form, violating subject-verb agreement rules. 〈see〉 should be changed to the third-person singular form 『sees』 to maintain subject-verb agreement.
error_sentence: Linda see a little girl is buying some food.
correct_sentence: Now it is 3:00 p.m. Linda sees a little girl buying some food.
error: is
error_type: Nonfinite Verb Form Error
error_severity: 3
error_description: Nonfinite Verb Form Error: According to English grammar rules, after a sensory verb like 〈sees〉, a present participle should be used as an object complement to indicate an ongoing action. In the original sentence, 〈is〉 should be deleted from 〈is buying〉.
error_sentence: And Linda's mother is trying the shoes.
correct_sentence: And Linda's mother is trying on the shoes.
correction: on
error_type: Preposition Error
error_severity: 3
error_description: Preposition Error: According to English usage, when “try” means “to try on clothes,” it is an intransitive verb and needs to be paired with the preposition “on” to form the fixed phrase “try on”. The original phrase 〈trying the shoes〉 lacks the preposition 〈on〉, making the meaning incomplete; 『on』 should be added to form “trying on the shoes,” making the expression conform to standard usage and semantic requirements.
error_sentence: Her father is staying on the sofa and wait for her mother.
correct_sentence: Her father is staying on the sofa and waiting for her mother.
error: wait
correction: waiting
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: According to English grammar rules, in a parallel structure connected by “and,” the tenses of the verbs should be consistent. In the original sentence, the first part 〈is staying〉 is in the present continuous tense, indicating an ongoing action, while the second part 〈wait〉 is in the base form, resulting in inconsistent tenses. 〈wait〉 should be changed to the present participle form 『waiting』 to match the preceding present continuous structure, accurately expressing the currently ongoing action.