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:
Hello! I am go shopping in the supermaket three o'clock in the afternoon. Look! A little girl is buying some food. A youny lady is looking at a dress. Linda's mother is trying shoes. Linda's father is staying on the sofa. He is waitting for his wife.

Corrected essay:
Hello! I am shopping in the supermarket at three o'clock in the afternoon. Look! A little girl is buying some food. A young lady is looking at a dress. Linda's mother is trying on shoes. Linda's father is staying on the sofa. He is waiting for his wife.

Error analysis:
error_sentence: I am go shopping in the supermaket three o'clock in the afternoon.
correct_sentence: I am shopping in the supermarket at three o'clock in the afternoon.
error: go
error_type: Verb Choice Error
error_severity: 3
error_description: Verb Choice Error: According to English grammar rules, the structure of the present continuous tense is "be doing"; the word 〈go〉 in the original sentence does not fit this structure, thus it needs to be deleted, keeping 『am shopping』 to meet the tense requirement.

error_sentence: I am go shopping in the supermaket three o'clock in the afternoon.
correct_sentence: I am shopping in the supermarket at three o'clock in the afternoon.
error: supermaket
correction: supermarket at
error_type: Preposition Error
error_severity: 3
error_description: ① Spelling Error: Based on the sentence's meaning, the intended word is "supermarket", thus 〈supermaket〉 is a misspelling of 『supermarket』; it needs to be corrected to 『supermarket』 for clarity; ② Preposition Error: According to English usage conventions, the preposition 『at』 is missing before 〈three o'clock〉 in the original sentence; therefore, 〈three o'clock〉 should be changed to 『at three o'clock』 to indicate a specific time point, conforming to English grammar.

error_sentence: A youny lady is looking at a dress.
correct_sentence: A young lady is looking at a dress.
error: youny
correction: young
error_type: Spelling Error
error_severity: 2
error_description: ① Spelling Error: Based on the sentence's meaning, the intended word is "young", thus 〈youny〉 is a misspelling of 『young』; it needs to be corrected to 『young』 for clarity.

error_sentence: Linda's mother is trying shoes.
correct_sentence: Linda's mother is trying on shoes.
correction: on
error_type: Preposition Error
error_severity: 2
error_description: Preposition Error: According to English usage conventions, the verb 〈trying〉 in the original sentence could be misunderstood as "attempting", which doesn't fit the context; the phrasal verb 『trying on』 means "to test clothing by putting it on", which is a fixed phrase; missing the preposition 〈on〉 makes the meaning incomplete, therefore 『on』 needs to be added after 〈trying〉 to conform to English idiomatic expression and the prompt's requirement.

error_sentence: He is waitting for his wife.
correct_sentence: He is waiting for his wife.
error: waitting
correction: waiting
error_type: Spelling Error
error_severity: 2
error_description: Spelling Error: Based on the sentence's meaning, the intended word is "waiting", thus 〈waitting〉 is a misspelling of 『waiting』; it needs to be corrected to 『waiting』 for clarity.