求翻译：如果教师不合格，一方面会造成孩子的学习基础不牢固，英语口语的语音、语调不标准；另一方面，错误的引导方式还会使孩子自信心和学习兴趣受到很大伤害。是什么意思？

If teachers are not qualified, it will cause a child's Learning Foundation is not solid, spoken English pronunciation and intonation are not standard on the other, wrong boot mode also causes the child confidence and interest in learning to be greatly hurt.