自行车— Part 1 評分報告

建議: 回答太简单且有重复，时态使用不够准确。应直接回应并用一至三句补充细节，例如说明什么时候得到的、骑车的频率或喜欢的原因；注意过去时的一致性并避免重复相同内容。

範例: Yes, I did. I got my first bike when I was seven and rode it almost every day to visit friends and explore my neighborhood, which made me more independent.

建議: 回答明确且有理由，但细节较少且句子连接可更自然。可以用连接词扩展并提供更具体的例子或比较（如城市/乡村差异、共享单车影响），同时把句子合并避免逗号拼接错误。

範例: Yes, bikes are still very popular in China because they are cheap and convenient; for example, many students and commuters use bicycles or shared bikes for short trips, especially in smaller cities where traffic is lighter.

× Yes, I have a bike.

✓ Yes, I had a bike.

学生在回答过去是否拥有某物时使用了现在时“have”，与问题“If you had a bike when you were a child”不一致。应使用过去时“had”来表达过去的情况。建议在谈论过去发生的事时统一使用过去时态，例如“I had a bike when I was a child.”。

× Yes, bikes are very popular in China because a lot of students can go to school by bike, it's convenient and it's cheap.

✓ Yes, bikes are very popular in China because many students can go to school by bike; they are convenient and cheap.

句子中使用了缩写逗号连接多个独立分句，且代词和形容词使用上有小问题：1) 用“a lot of students”可以改为更正式的“many students”；2) 后半句中指代应使用复数代词“they”来指代“bikes”，而不是重复“it's”；3) 用分号或句号分开独立分句更清晰。建议：在说一般事实时用现在时，用复数代词正确指代复数名词，并注意标点以分隔独立子句。