Bike— Part 1 채점 보고서

제안: 回答太简短，缺乏细节和扩展。建议首先直接回答，然后用一到两句补充说明（比如什么时候有、那辆自行车的特点、是否经常骑或和谁一起骑），并使用连接词使回答更连贯。注意总句数不超过5句，语言自然。

예시: Yes, I did. I got my first bike when I was eight, and it was a bright red mountain bike. I rode it almost every day after school with my friends, which helped me learn balance and build confidence.

제안: 回答有观点但表达略显笨拙，语法和用词需改进。建议先立场句，然后用一到两句具体理由和例子支持，使用连接词（for example, because, so）使逻辑更清晰，并避免笼统表述。

예시: Yes, I think bikes are very popular in my country because they are a cheap and healthy way to travel. For example, many people cycle to work or school to avoid traffic jams, and this also helps reduce air pollution in cities.

× I think bikes are popular in my country because it's safe and it can avoid air pollution.

✓ I think bikes are popular in my country because they are safe and can help avoid air pollution.

原句中用的是单数代词 "it" 指代复数名词 "bikes"，这是代词使用错误（代词须与所指名词在数上保持一致）。此外，第二个从句中主语可以省略（连用 'can' 时不必重复代词），并且语义上更自然的表达是 "help avoid air pollution"。建议：当代词指代复数名词时使用复数代词（如 they）；在并列谓语或情态动词结构中，可省略重复主语或用复数形式。