自行车— Part 1 評分報告

建議: 注意句子结构和用词，保持简洁自然。可以把否定回答直接放在开头，随后提供原因或简短细节。避免语法错误（如'missing word'或时态不当），并控制句子数量不超过5句。建议：使用正确的短语（例如 'back then'），并加一到两句说明原因或回忆。

範例: No, I didn't have a bike when I was a child. Back then my family lived in a small apartment and there wasn't enough space to store one. Instead, I usually walked to school or took public transport.

建議: 注意时态和表达准确性，使用连接词使句子更连贯。避免拼写错误（如 'radio' 应为 'ride'），并用恰当的时间表达（例如 'twenty years ago' 用过去时，'now' 用现在时）。建议提供具体原因或比较细节，如城市化、公共交通或共享单车的影响。

範例: Bicycles were more popular about twenty years ago, but nowadays fewer people ride them as a main means of transport. This is mainly because cities have expanded and more people use cars or convenient public transit, although bike-sharing services have increased short-distance cycling in some areas.

× No, I didn't have back when I was a child.

✓ No, I didn't have one back when I was a child.

原句缺少宾语（一个自行车），导致句子不完整。使用过去时否定形式“didn't have”是正确的，但需要加上代词或名词作为宾语。建议在“have”后加上“one”或“a bike”，完整表达意思。例如：“No, I didn't have one back when I was a child.”

× The bikes are popular twenty years ago, but now fewer people radio bike as a transportation to

✓ Bikes were popular twenty years ago, but now fewer people ride bikes as a means of transportation.

原句中“are popular twenty years ago”时态错误，描述过去情况应使用一般过去时“were”；“radio bike”是拼写/词汇错误，应为“ride bikes”；“as a transportation to”搭配不当，正确表达为“as a means of transportation”或“as transportation”。建议注意时间状语与动词时态一致，动词拼写与常用固定搭配。