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:
It's 3:00, Linda is in the shop hall now. She sees a little girl is buying some food. A young lady is looking at a dress, Oh, who's that woman? She is Linda's mother, her mother is trying the shoes, Linda's father is staying on the sofa, he's waiting for Linda's mother.

Corrected essay:
It's 3:00 p.m.. Linda is in the shopping mall now. She sees a little girl buying some food. A young lady is looking at a dress. Oh, who's that woman? She is Linda's mother. Her mother is trying on the shoes. Linda's father is staying on the sofa. He's waiting for Linda's mother.

Error analysis:
error_sentence: It's 3:00, Linda is in the shop hall now.
correct_sentence: It's 3:00 p.m..
error: ,
correction: p.m..
error_type: Format Error
error_severity: 4
error_description: ① Format Error: According to English writing conventions, time expressions indicating afternoon require "p.m.". The original sentence lacks "p.m." after 〈3:00〉, which is a format error; 『p.m.』 should be added to complete the time expression; ② Punctuation Error: The comma in 〈3:00,〉 is used improperly and should be deleted. Also, the punctuation for the time expression "3:00 p.m." is incorrect; 〈3:00,〉 should be changed to 『3:00 p.m..』 to conform to English punctuation standards.

error_sentence: It's 3:00, Linda is in the shop hall now.
correct_sentence: Linda is in the shopping mall now.
error: shop hall
correction: shopping mall
error_type: Noun Error
error_severity: 3
error_description: Noun Error: According to English usage, the phrase 〈shop hall〉 is a noun error. 〈shop hall〉 is not standard English usage; the fixed noun phrase 『shopping mall』 should be used to mean a shopping center. Therefore, 〈shop hall〉 needs to be changed to 『shopping mall』 to accurately describe the setting.

error_sentence: She sees a little girl is buying some food.
correct_sentence: She sees a little girl buying some food.
error: is
error_type: Word Redundancy Error
error_severity: 3
error_description: Word Redundancy Error: According to English grammar rules, when the perception verb 〈sees〉 is followed by an object complement indicating an ongoing action, the present participle form should be used. In the original sentence 〈She sees a little girl is buying some food.〉, the use of 〈is〉 is redundant, leading to a nonfinite verb form error. 〈is〉 should be deleted, changing the sentence to 『She sees a little girl buying some food.』, making the sentence structure conform to English usage.

error_sentence: A young lady is looking at a dress, Oh, who's that woman?
correct_sentence: A young lady is looking at a dress.
error: ,
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English writing conventions, the comma 〈,〉 is inappropriate for connecting the two independent clauses “A young lady...dress” and “Oh, who's...”. Two independent clauses cannot be joined directly by a comma; the comma 〈,〉 needs to be changed to a period 『.』 to correctly separate the sentences, making “A young lady is looking at a dress” and “Oh, who's that woman?” independent sentences, conforming to English writing standards.

error_sentence: She is Linda's mother, her mother is trying the shoes, Linda's father is staying on the sofa, he's waiting for Linda's mother.
correct_sentence: She is Linda's mother. Her mother is trying on the shoes.
error: , her
correction: . Her
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the coordinate independent clauses 〈She is Linda’s mother〉 and 〈her mother is trying the shoes〉 need to be separated by a period to avoid a comma splice error. The comma 〈,〉 in the original sentence fails to correctly separate the sentence components, constituting a punctuation error. It needs to be changed to a period 『.』 to make the sentence structure clear. Therefore, 〈, her〉 should be changed to 『. Her』 to conform to English writing standards.

error_sentence: She is Linda's mother, her mother is trying the shoes, Linda's father is staying on the sofa, he's waiting for Linda's mother.
correct_sentence: Her mother is trying on the shoes.
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English usage, when the verb 〈trying〉 expresses the action of trying on clothes/shoes, it needs to be paired with the preposition "on" to form the fixed phrase "try on". In the original sentence 〈her mother is trying the shoes〉, the preposition "on" is missing after 〈trying〉, which is a preposition error. 〈trying〉 needs to be changed to 『trying on』 to accurately express the action of trying on shoes.

error_sentence: She is Linda's mother, her mother is trying the shoes, Linda's father is staying on the sofa, he's waiting for Linda's mother.
correct_sentence: Her mother is trying on the shoes.
error: ,
correction: .
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the comma 〈,〉 fails to correctly separate sentence components. The original sentence part 〈her mother is trying the shoes, Linda's father is staying on the shoes〉 contains two independent clauses, 〈Her mother is trying the shoes〉 and 〈Linda's father is staying on the shoes〉, which cannot be joined by a comma. The comma 〈,〉 needs to be changed to a period 『.』 to make the sentence structure clear and conform to English writing standards.

error_sentence: She is Linda's mother, her mother is trying the shoes, Linda's father is staying on the sofa, he's waiting for Linda's mother.
correct_sentence: Linda's father is staying on the sofa. He's waiting for Linda's mother.
error: , he
correction: . He
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, the coordinate independent clauses 〈Linda’s father is staying on the sofa〉 and 〈he’s waiting for Linda’s mother〉 need to be separated by a period. The comma 〈,〉 in the original sentence is a punctuation error and should be changed to a period 『.』. Therefore, 〈, he〉 should be modified to 『. He』 to make the sentence structure clear and conform to writing standards.