Bike— Part 1 채점 보고서

제안: 你的回答有语法错误和不自然的表达。首先，回答过去的拥有情况应该直接用过去式，例如“Yes, I did”或“No, I didn’t”。其次，不需要两次否定回应，且可以补充一句简短原因或细节来丰富回答。建议练习用一到两句自然的过去式陈述并加入简单原因。

예시: No, I didn't. My family couldn't afford a bike when I was young, so I usually walked to school.

제안: 回答过于简短，缺乏细节和支持性信息。建议在肯定或否定后用1–2个连贯的句子补充原因、比较或举例，使用连接词使回答更自然和完整。

예시: Yes, they are. In many cities people use bikes for short trips because traffic is heavy and cycling is cheaper than driving.

× No, I'm not. No, I didn't.

✓ No, I didn't.

原句中學生回答“Did you have a bike when you were a child?”時說“No, I'm not.”不合適。詢問的是過去是否擁有自行車，應使用過去時的否定回答“No, I didn't.”。這裡的問題屬於代詞/助動詞用法不當（在列表中更接近「Incorrect use of pronouns」或助動詞錯誤），正確做法是在回答過去時問題時使用適當的助動詞和時態。建議：遇到以“Did”開頭的過去式問句，否定回答使用“No, I didn't.”，不要使用“I am not.”或“I'm not.”。

× Yes, they are.

✓ Yes, they are.

此句為對現時一般情況的肯定回答，語法正確，時態與主語一致。無需修改。