自行车— Part 1 評分報告

建議: 回答直接但有语法和表达问题。需要用更自然的句子并注意时态和词汇搭配。建议用一到两句开门见山的主题句，然后补充一两句说明原因或细节，注意动词词组（learn to ride a bike）和时间表达（when I was 18 / at 18）。避免冗长重复。

範例: No, I didn't have a bike as a child. I only learned to ride a bicycle when I was 18, so before that I used public transport or walked short distances.

建議: 回答内容相关且信息具体，但有语法错误和用词不准的问题（主谓一致，使用present continuous或present simple更合适）。建议先给出总体评价，再用1–2句具体例子支持，使用连接词如 "for example" 或 "because" 来增强连贯性。尽量用更地道表达如 "bike-sharing" 或 "shared bikes"。

範例: Yes, bikes are very popular in China because bike-sharing services have made short trips cheaper and more convenient. For example, many people now use shared bikes by scanning a QR code on their phone to unlock them.

× No, I didn't have a bike when I was a child because I started learning bicycle since I was 18 years old.

✓ No, I didn't have a bike when I was a child because I started learning to ride a bicycle when I was 18 years old.

问题类型：使用动词 + -ing 或不定式的错误。句中“started learning bicycle”搭配不当。动词“learn”或“start”后跟的宾语和动词形式需正确：表示学骑自行车应使用短语“learn to ride a bicycle”或“start learning to ride a bicycle”。另外，时间状语“不应使用 since + 具体过去年龄”而应使用 when 引出过去时间点。因此改为“started learning to ride a bicycle when I was 18 years old”。建议：记住常见搭配“learn to do sth.”、“start to do sth.”或“start doing sth.”，以及使用 when 引出过去某个年龄点。

× Well, bikes is becoming a convenient lifestyle for people in China and we can see many bicycles on the streets right now.

✓ Well, bikes are becoming part of a convenient lifestyle for people in China, and we can see many bicycles on the streets right now.

问题类型：主谓一致错误。“bikes”是复数名词，谓动词应使用复数形式“are”，而不是“is”。另外，原句中“becoming a convenient lifestyle”表达不自然，改为“becoming part of a convenient lifestyle”更符合英语习惯。建议：检查主语的单复数并使谓语动词一致；多用常见搭配如“are becoming part of a lifestyle”。

× People can use the bicycles by themselves by scanning the code.

✓ People can use the bicycles themselves by scanning the QR code.

问题类型：介词使用不当。短语“by themselves”在此处可以改为“themselves”更自然；“scanning the code”缺少明确指代，常见表达为“scanning the QR code”。此外，两处 by 连用显得冗余。建议：去掉多余的介词，使用更具体的名词（如 QR code）并简化结构。