Pinyin Annotation Test The following are more or less interchangeable: 很A A得很/得不行/得不得了 The place is so lively, the children are very/so/extremely happy. 这个地方这么热闹,孩子们高兴得很/得不行/得不得了。 See https://www.chinesezerotohero.com/grammar-reference/