When answering this question, you can talk about the typical age or stage when children start to form their own opinions. Usually, children begin to develop independent thinking and personal preferences during early childhood, especially around the age of 5 to 7, when they start school and interact more with others. You can also mention that as children grow older and gain more experiences, their opinions become stronger and more independent. It’s also good to point out that every child is different, so the exact age can vary.

回答這個問題時，你可以談談孩子開始形成自己意見的典型年齡或階段。通常，孩子在幼兒期開始發展獨立思考和個人喜好，特別是在大約5至7歲時，當他們開始上學並且與他人更多互動。你也可以提到，隨著孩子長大並獲得更多經驗，他們的意見會變得更加堅定和獨立。同時指出每個孩子都不同，所以確切的年齡可能會有所差異也是很好的。