Writing prompt: Using the given vocabulary and sentence patterns, and referring to the picture, write a short essay. Assume you are Linda; this is a picture of your room. Please use the 'There be' sentence structure and the information provided below to describe your room. Writing hints: a bed; a bedside table; a wardrobe; some books on the shelf; lamp; on the wall.

Student essay:
This is my bedroom. It's not big but very nice. There is one bed in the room. There is a long desk between the beds. There are some books on the desk. There is a new computer on the desk, too. There is a photo on the wall. It's my sister and me. we look happy. There is a map of China on the wall, too. The bedroom is big and nice.

Corrected essay:
This is my bedroom. It's not big but very nice. There is one bed in the room. There is a long desk near the bed. There are some books on the desk. There is a new computer on the desk, too. There is a photo on the wall. It's a photo of my sister and me. We look happy. There is a map of China on the wall, too. The bedroom is big and nice.

Error analysis:
error_sentence: There is a long desk between the beds.
correct_sentence: There is a long desk near the bed.
error: between the beds
correction: near the bed
error_type: Noun Number Error
error_severity: 2
error_description: ① Preposition Error: According to the context describing only “one bed” in the room, using the prepositional phrase 〈between the beds〉, which implies a relationship between two or more items, is logically incorrect. Based on standard spatial relationship expression, it should be changed to 『near the bed』 to accurately describe the positional relationship of the item to the single bed; ② Noun Number Error: According to the subject-verb agreement principle in English grammar, the plural noun 〈beds〉 in the original sentence contradicts the singular limitation “one bed” mentioned earlier. Considering the context needs to emphasize the objective fact of a single bed, the plural noun 〈beds〉 is corrected to the singular form 『bed』 to maintain numerical consistency with the context.
error_sentence: It's my sister and me.
correct_sentence: It's a photo of my sister and me.
correction: a photo of
error_type: Noun Error
error_severity: 2
error_description: Noun Error: The original sentence 〈It's my sister and me〉 lacks a core noun component, resulting in an incomplete meaning. According to the requirement for a complete predicate structure, the core noun component 『a photo of』 needs to be added as the central element of the predicate, modifying the sentence to 『It's a photo of my sister and me』 to clearly express the complete meaning “This is a photo including my sister and me”.
error_sentence: we look happy.
correct_sentence: We look happy.
error: we
correction: We
error_type: Case Error
error_severity: 1
error_description: Case Error: According to the rule of capitalizing the first letter of a sentence in English writing conventions, when the original sentence 〈we look happy〉 functions as an independent sentence, its subject pronoun 〈we〉, being at the beginning of the sentence, must be capitalized. Therefore, the lowercase pronoun 〈we〉 is corrected to the standard capitalized form 『We』, resulting in the complete sentence 『We look happy』 to comply with English punctuation and capitalization standards.