Part 1
試験官
Did you have a bike when you were a child?
受験者
I have.
試験官
Do you think bikes are popular in your country?
受験者
I don't know.
Did you have a bike when you were a child?
スコア: 25.0提案: Bạn nên trả lời trực tiếp ở thì quá khứ và mở rộng câu, tránh câu quá ngắn và ngữ pháp sai. Hãy bắt đầu bằng một câu chủ đề rõ ràng (Yes/No + thông tin), sau đó thêm 1–2 câu chi tiết cụ thể (ai cho, loại xe, kỷ niệm). Dùng liên từ đơn giản nếu cần để nối ý.
例: Yes, I did. I had a blue bicycle that my parents bought me when I was seven, and I used to ride it to school every day. It was a simple single-speed bike but it gave me a lot of freedom and happy memories.
Do you think bikes are popular in your country?
スコア: 20.0提案: Bạn nên đưa ra quan điểm rõ ràng thay vì trả lời "I don't know". Trả lời trực tiếp, rồi bổ sung lý do và ví dụ cụ thể (thói quen, phương tiện phổ biến, hạ tầng). Dùng liên từ để giải thích (because, although, however).
例: Yes, I think bikes are quite popular, especially in smaller cities and among commuters, because they are affordable and convenient for short journeys. However, in large cities many people prefer motorbikes or cars due to traffic and longer distances.
× I have.
✓ I did.
The examiner asked about a past possession ('Did you have a bike when you were a child?') so the student must use the past tense. 'I have' is present tense and incorrect here. Use 'I did' or 'Yes, I did' to answer a past simple question. Suggestion: match the tense of the question—use past simple for past-time questions, e.g. 'Yes, I did' or 'Yes, I had a bike.'
× I don't know.
✓ I'm not sure.
The question 'Do you think bikes are popular in your country?' asks for an opinion in the present. 'I don't know' is grammatically acceptable but sounds abrupt. A more natural response is 'I'm not sure' or 'I don't know much about that.' However if focusing on grammar types from the list, this is not a tense error but a register choice; still prefer 'I'm not sure' to indicate current uncertainty. Suggestion: use present simple for general opinions and more idiomatic expressions, e.g. 'I'm not sure' or 'I don't think so.'