Bike— Part 1 채점 보고서

제안: 回答要更简洁、语法准确并提供具体细节。注意年龄数字错误（“a 2”应为“2”或“两岁”），并修正时间点（学会骑车的年龄不应大于拥有自行车的年龄）。把句子分成主题句和1-2个支持句，使用连接词使表达更连贯。例如说明什么时候得到自行车、什么时候学会去学校的习惯等。

예시: I had a small white bike when I was about two years old. I learned to ride it with training wheels at around three, and later took off the wheels when I grew more confident. Because my school was nearby, I used to ride it there almost every day, which helped me become a confident cyclist.

제안: 回答内容明确但有拼写和用词错误（如“write backs”应为“ride back”或“ride to”）以及小语法问题。可以用一两个具体例子或比较来丰富内容，并使用连接词如“for example”或“also”。保持句子清晰且不冗长。

예시: Yes, bicycles are very popular in China because they are cheap, convenient and environmentally friendly. For example, many schoolchildren ride their bikes to school, and a lot of adults choose cycling for their daily commute because it avoids traffic and is good exercise.

× Yes, I had a small white bike when I was a 2 when I was a child.

✓ Yes, I had a small white bike when I was 2 as a child.

句中“a 2”使用了冠词 a 加上数字，造成单数/复数和冠词使用错误。表示年龄时不需冠词，应直接说“when I was 2”或“when I was two”。建议：表示年龄时省略冠词，使用数字或单词（two）。

× I learned to ride it with training wheels when I was about 12 years old and I used to ride it every day to school around my.

✓ I learned to ride it with training wheels when I was about 12 years old, and I used to ride it every day to school.

原句末尾“around my.” 不完整且含有多余词；另外句子需要更自然的停顿和连词连接。删除不完整的片段并用逗号连接两个过去习惯动作，使句子符合过去时叙述（used to + 动词）。建议：去掉无意义的词，保持时态一致并用逗号或连接词清晰分隔。

× Yes, bicycles are very popular in China because they are cheap, convenient and environmentally friendly.

✓ Yes, bicycles are very popular in China because they are cheap, convenient, and environmentally friendly.

该句总体正确，但在列举形容词时应在倒数第二项后加逗号（牛津逗号可选，但在英语写作中常用以避免歧义）。这里属于标点细节，非语法核心错误。建议：列举三项及以上时在倒数第二项前加逗号以提高清晰度。

× Many schoolchildren write backs to school and a lot of adults right back to work.

✓ Many schoolchildren ride bikes to school and a lot of adults ride back to work.

原句中“write backs”和“right back”是词形混淆错误：应为“ride back”或“ride to”，表示骑车回去。这里属于动词拼写/用法错误，应使用动词 ride。建议：注意同音或近形词的正确拼写与语义，使用与语境匹配的动词（ride）。