1.When answering this question, you can discuss the cognitive and developmental aspects of language learning in children. Many experts believe that the earlier children start learning a foreign language, the better, as young children have a greater capacity for absorbing new sounds and structures. 2.You can also consider the practical aspects, such as the availability of resources and the child's interest and motivation. Some might argue that starting in early childhood, around ages 3 to 5, is ideal, while others might suggest waiting until primary school when children have developed basic literacy skills in their native language.

1. 在回答这个问题时，你可以讨论儿童语言学习的认知和发展方面。许多专家认为，孩子越早开始学习外语越好，因为年幼的孩子更有能力吸收新的声音和结构。 2. 你也可以考虑实际方面，比如资源的可用性以及孩子的兴趣和动力。有些人可能认为在3到5岁左右的幼儿期开始学习是理想的，而另一些人则建议等到小学阶段，当孩子已经掌握了母语的基本读写技能后再开始。