Bike— Part 1 採点レポート

提案: 回答时时态和用词有错误，且过于简短。应直接用过去时说明过去情况，并给出简短原因或补充细节以显得自然连贯。例如："No, I didn't. My family couldn't afford one, so I usually walked to school." 注意使用过去时（didn't）和提供1–2个支持细节。

例: No, I didn't. My family couldn't afford one when I was a child, so I usually walked to school or took the bus.

提案: 回答不连贯且语法错误较多，句子分割不当，内容含糊。应先给出明确的观点，然后用一两个连贯的理由支持，并使用连接词（because, so, for example）。同时注意语法（主谓一致、完整句子）和词汇搭配（improve our health）。例如："Yes, I think bikes are popular because they are cheap and good for health."

例: Yes, I think bikes are quite popular in my country because they are affordable and help people stay healthy. For example, many students and office workers cycle to work to save money and get some exercise.

× Student: No, I haven't.

✓ Student: No, I didn't.

这句话是在回答过去是否拥有自行车（Did you have... when you were a child?），所以应使用一般过去时。原句用的是现在完成时（I haven't）且省略了宾语，使句子不完整且时态不匹配。建议使用完整的一般过去时答句："No, I didn't." 或更完整地说 "No, I didn't have one." 以明确与提问时态一致。

× Student: I think bikes are popular in my country because I think right back. Will help. Us to improve our healthy.

✓ Student: I think bikes are popular in my country because I think they help us improve our health.

这一连串句子存在多个问题： 1) 句子断裂与缺少主语/连词（"I think right back. Will help. Us to..."）属于句子结构和时态使用不当，应合并为完整句子。2) "right back" 用法不当，语义不明，应删去或换成合适表达。3) "Will help." 单独使用将导致时态与主句不一致，且缺少主语，正确用法是在主句中用一般现在时描述事实性观点："they help"。4) "Us to improve our healthy" 中 "our healthy" 是错误用法，正确名词是 "our health"，且不需要不定式结构，直接用动词不带 to 的结构（help + 宾语 + 动词原形）或用动名词（help ... improving）也可，但最自然的是 "help us improve our health"。 建议用句："I think bikes are popular in my country because I think they help us improve our health."（我认为自行车在我国很受欢迎，因为我认为它们有助于我们改善健康。）