Bike— Part 1 Báo cáo

Gợi ý: 回答基本直接，也给出了原因，但“the bike is expensive”表达不够自然，因为这里是泛指自行车，应改为“bikes were expensive”或“a bike was expensive”。此外，答案只有一个原因，内容略单薄，可以补充家庭经济情况或童年时期的替代交通方式。建议使用“because”或“so”连接细节，并控制在2—3句话内。

Ví dụ: No, I didn’t, because bikes were quite expensive when I was a child. My family couldn’t really afford one, so I usually walked to school or played with my friends at home.

Gợi ý: 回答虽然直接，但只有“Yes”，没有解释、细节或例子，无法充分展示语言能力。建议先明确表达观点，再说明自行车受欢迎的原因，例如价格低、环保、方便，最后可以补充一个具体场景或人群。回答可使用“because”“especially”或“for example”等连接词，扩展到2—3句话。

Ví dụ: Yes, bikes are quite popular in my country because they are affordable and environmentally friendly. Many people use them for short trips, especially when they want to avoid traffic in busy city centres.

× No, I didn't because the bike is expensive.

✓ No, I didn't because the bike was expensive.

问题类型：过去时错误。问题发生在过去的“when you were a child”，因此原因中的动词也应使用过去时。“is”是一般现在时，应改为“was”。