Bike— Part 1 채점 보고서

제안: 回答切题，也提供了颜色、年龄和用途等具体细节。注意统一过去时：描述童年经历时，应将“ride”和“play”改为“rode”和“played”；最后一句也可改成过去时，说明那辆自行车当时很方便。

예시: Yes, I had a small red bike when I was seven. I rode it to school and often used it to play with my friends after class. It was a convenient way to get around.

제안: 回答了自行车受欢迎的原因，但有明显的主谓一致和表达问题：“bikes”应搭配“are”，“to company”应改为“to work”。“its carbon dioxide free”表达不完整，可改为“they don't produce carbon emissions”。建议用清晰的句子说明便利性和环保优势，并补充一个具体使用场景。

예시: Yes, I think bikes are quite popular in my country. They are a convenient way to get to school or work, especially for short journeys. Also, they don't produce carbon emissions, so they are better for the environment.

× I always ride to school and play with my friends.

✓ I always rode to school and played with my friends.

这句话是在描述你七岁时的习惯，语境是过去，因此应使用一般过去时：ride 改为 rode，play 改为 played。

× I think bikes is a convenient vehicle for people to ride to school or to company its carbon dioxide free.

✓ I think bikes are convenient vehicles for people to ride to school or to work.

主语 bikes 是复数，因此 be 动词应使用 are，而不是 is。改写后的 vehicles 也与复数主语 bikes 保持一致。

× I think bikes is a convenient vehicle for people to ride to school or to company its carbon dioxide free.

✓ I think bikes are convenient vehicles for people to ride to school or to work.

company 是可数名词，单数形式通常需要冠词；不过这里表达“去上班”时，使用 to work 更自然，也不需要冠词。

× I think bikes is a convenient vehicle for people to ride to school or to company its carbon dioxide free.

✓ I think bikes are convenient vehicles for people to ride to school or to work. They are carbon-dioxide-free.

its 是物主代词，表示“它的”；原句想表达“它们是……”，应使用 They are。注意，it's 是 it is 的缩写，也不能用来指代复数的 bikes。