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:
3 o'clock afternoon, Linda is seeing some people who are doing something. First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress. Finally, Linda's mom are trying the shoes, Linda's father is waiting for them who stay on the sofa.

Corrected essay:
At 3 o'clock in the afternoon, Linda sees some people who are doing something. First, she sees a little girl. The girl is buying some food. Then, she sees a young lady. The lady is looking at a dress. Finally, Linda's mom is trying on the shoes, and Linda's father, who is staying on the sofa, is waiting for them.

Error analysis:
error_sentence: 3 o'clock afternoon, Linda is seeing some people who are doing something.
correct_sentence: At 3 o'clock in the afternoon, Linda sees some people who are doing something.
correction: At
error_type: Preposition Error
error_severity: 3
error_description: Preposition Error: According to English expression conventions, time expressions require the preposition 〈At〉 to introduce a complete adverbial phrase of time; therefore, 『At』 is added at the beginning of the sentence to form a standard time expression.

error_sentence: 3 o'clock afternoon, Linda is seeing some people who are doing something.
correct_sentence: At 3 o'clock in the afternoon, Linda sees some people who are doing something.
correction: in the
error_type: Preposition Error
error_severity: 3
error_description: ① Preposition Error: According to English expression conventions, the time expression 〈afternoon〉 lacks the necessary preposition 'in' to conform to the correct expression for periods of time in English, so 『in』 is added to make the sentence more idiomatic; ② Determiner Error: According to English adverbial expressions of time, the fixed expression for 'in the afternoon' is 'in the afternoon', requiring the definite article 'the' before 'afternoon', thus the correct form here is 『in the afternoon』.

error_sentence: 3 o'clock afternoon, Linda is seeing some people who are doing something.
correct_sentence: At 3 o'clock in the afternoon, Linda sees some people who are doing something.
error: is seeing
correction: sees
error_type: Verb Tense Error
error_severity: 3
error_description: Verb Tense Error: The main clause describes Linda's current state of observation, which should use the simple present tense 〈sees〉 instead of the present continuous tense 〈is seeing〉 to maintain temporal consistency with the overall context.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: First, she sees a little girl.
error: see
correction: sees
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: According to English grammar rules, the subject 〈she〉 is third-person singular, requiring the verb to change accordingly to 『sees』 to maintain subject-verb agreement; therefore, it needs to be changed to 『sees』 to comply with the subject-verb agreement rule.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: First, she sees a little girl. The girl is buying some food.
error: , the
correction: . The
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: The sentence 〈she see a little girl, the girl is buying some food〉 contains two independent clauses that need to be separated by a period.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: The girl is buying some food. Then, she sees a young lady.
error: , then
correction: . Then
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: The preceding clause 〈The girl is buying...〉 and the following clause 〈she sees a young lady〉 are independent clauses and need to be separated by a period.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: Then, she sees a young lady.
error: see
correction: sees
error_type: Subject-Verb Agreement Error
error_severity: 3
error_description: Subject-Verb Agreement Error: According to English grammar rules, the subject 〈she〉 is third-person singular, requiring the verb to change accordingly to 『sees』 to maintain subject-verb agreement; therefore, it needs to be changed to 『sees』 to comply with the subject-verb agreement rule.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: Then, she sees a young lady. The lady is looking at a dress.
error: , the
correction: . The
error_type: Punctuation Error
error_severity: 3
error_description: Punctuation Error: The sentence 〈she see a young lady, the lady is looking at dress〉 contains two independent clauses that need to be separated by a period; therefore, the 〈,〉 is changed to 『. 』 to comply with English grammar rules.

error_sentence: First, she see a little girl, the girl is buying some food, then, she see a young lady, the lady is looking at dress.
correct_sentence: The lady is looking at a dress.
correction: a
error_type: Determiner Error
error_severity: 3
error_description: Determiner Error: According to English grammar rules, the noun 〈dress〉 lacks the necessary determiner 〈a〉 to indicate an unspecified singular object; therefore, 『a』 is added to make the sentence more idiomatic.

error_sentence: Finally, Linda's mom are trying the shoes, Linda's father is waiting for them who stay on the sofa.
correct_sentence: Finally, Linda's mom is trying on the shoes, and Linda's father, who is staying on the sofa, is waiting for them.
error: are trying
correction: is trying on
error_type: Subject-Verb Agreement Error
error_severity: 4
error_description: ① Subject-Verb Agreement Error: The subject 〈Linda's mom〉 in the sentence is singular, so the verb 〈are〉 needs to be changed to the singular form 『is』; ② Preposition Error: According to English fixed phrases, 〈trying〉 lacks the necessary preposition 〈on〉 to express the action of trying on, so 『on』 is added to complete the sentence.

error_sentence: Finally, Linda's mom are trying the shoes, Linda's father is waiting for them who stay on the sofa.
correct_sentence: Finally, Linda's mom is trying on the shoes, and Linda's father, who is staying on the sofa, is waiting for them.
correction: and
error_type: Conjunction Error
error_severity: 3
error_description: Conjunction Error: The coordinate clauses 〈Linda's mom is trying on the shoes〉 and 〈Linda's father〉 need to be connected by the conjunction 『and』 to avoid a comma splice error; therefore, 『and』 is added to make the sentence more idiomatic.

error_sentence: Finally, Linda's mom are trying the shoes, Linda's father is waiting for them who stay on the sofa.
correct_sentence: Finally, Linda's mom is trying on the shoes, and Linda's father, who is staying on the sofa, is waiting for them.
error: is waiting for them who stay
correction: , who is staying
error_type: Verb Tense Error
error_severity: 3
error_description: ① Verb Tense Error: According to English grammar rules, the relative clause 〈who is staying〉 needs to use the present continuous tense to be consistent with the main clause tense 〈is waiting〉, so the verb 〈stay〉 is changed to the continuous tense 『is staying』; ② Sentence Structure Error: The non-restrictive relative clause should follow the antecedent, so 『who is staying』 should follow 〈Linda's father〉.

error_sentence: Finally, Linda's mom are trying the shoes, Linda's father is waiting for them who stay on the sofa.
correct_sentence: Finally, Linda's mom is trying on the shoes, and Linda's father, who is staying on the sofa, is waiting for them.
correction: , is waiting for them
error_type: Sentence Structure Error
error_severity: 4
error_description: Sentence Structure Error: The original sentence incorrectly joins the relative clause and the main clause; adding a comma and adjusting the structure to 『, who is staying..., is waiting...』 clarifies the logical relationship.