Part 1
考官
Did you have a bike when you were a child?
考生
Yes, I once have a bike with four wheels when I was a child.
考官
Do you think bikes are popular in your country?
考生
Yes they are. They were popular back in 1980s and in and nowadays they seem to be popular again.
Did you have a bike when you were a child?
分数: 62.0建议: Improve grammar and naturalness: use correct tense and articles, and make the sentence more concise. Add a brief supporting detail (where/why) using a linking word. Limit to 1–3 sentences.
示例: Yes, I had a bike with four wheels when I was a child. It was a small, red balance bike that my parents bought for me, so I could learn to ride safely before moving on to a regular two-wheeler.
Do you think bikes are popular in your country?
分数: 68.0建议: Correct grammar and improve coherence: use consistent tense and clear linking words; avoid repetition. Give a specific reason or example to support your view. Keep answer within 2–3 sentences.
示例: Yes, they are. Bicycles were very popular in the 1980s, and recently they've become popular again because more people use them for short commutes and leisure cycling, especially in cities with new bike lanes.
× Yes, I once have a bike with four wheels when I was a child.
✓ Yes, I once had a bike with four wheels when I was a child.
The sentence refers to a past time ('when I was a child'), so the main verb must be in the simple past. 'Have' is present tense; the correct past form is 'had'. Use simple past for completed past events. Suggestion: use 'had' for single past facts (I had a bike).
× They were popular back in 1980s and in and nowadays they seem to be popular again.
✓ They were popular back in the 1980s, and nowadays they seem to be popular again.
When referring to a decade, English requires the definite article 'the' plus the decade with an 's' (the 1980s). The original also contains an extra 'in' before 'nowadays' which is unnecessary. Use a comma and the conjunction 'and' to join clauses. Suggestion: write 'the 1980s' and remove the extra 'in'.