Bike— Part 1 채점 보고서

제안: Correct the basic word choice and make the response more natural and slightly more detailed (but still concise). Use the word "bike" not "back", start with a clear topic sentence, then add one brief supporting detail (e.g., who you rode with or how often). Keep under five sentences and use a linking word if adding detail.

예시: Yes, I had a bike when I was a child. I used to ride it to school and around my neighborhood with my friends, which helped me stay active and independent.

제안: Make the sentence more fluent and fix vocabulary errors (use "bike" or "bicycle", not "back"). Remove filler sounds (uh) and reorganize with a topic sentence followed by a specific supporting detail. Use a linking word such as "for example" or "for instance" to connect the idea of popularity with the example of bike-sharing systems.

예시: Yes, bikes are very popular in China. For example, there are many bike-sharing services in cities where people can scan a QR code to unlock a bicycle for short trips or commuting.

× Yes, I had a back when I was a child.

✓ Yes, I had a bike when I was a child.

The student used 'back' which is a wrong word choice (lexical error) instead of 'bike'. This is an incorrect use of vocabulary rather than a grammar rule in the list, but it best matches 'Incorrect use of adjectives or adverbs' among available types because a word form is wrong. Suggestion: Replace incorrect lexical items with the correct noun; here use 'bike'. Ensure pronunciation and spelling are checked to avoid similar mistakes. Note: If mapping strictly to the provided list, this could also be considered a sentence structure or vocabulary error, but the clear correction is to use the noun 'bike' to match the question and tense.

× Yes, actually in China there have uh, there are so many sharing back in the city and people can scan the QR code to unlock the bicycle to travel around the city or to commute.

✓ Yes, actually in China there are so many shared bikes in the city, and people can scan a QR code to unlock a bicycle to travel around the city or to commute.

Multiple issues: 'there have uh, there are' is redundant and ungrammatical; 'sharing back' is incorrect word choice and form. The main grammatical problem fits 'Incorrect use of prepositions' because the preposition 'in' must pair correctly with 'the city' and the noun phrase should be 'shared bikes' not 'sharing back'. Also 'scan the QR code' is better as 'scan a QR code'. Suggestions: Remove redundancy ('there have uh,'), use correct adjective form 'shared' for the bikes, use the plural noun 'bikes', and use 'in the city' for location. Use 'a QR code' unless a specific code is already known. Ensure subject-verb agreement ('there are') is used correctly.