1.Adjective phrase as a subject complement: "remarkable ability to cope with changes" is used as a subject complement to describe children, demonstrating a complex grammatical structure.
2.Present participle as an adverbial: "Being in a constant state of learning and development" uses the present participle "being" as an adverbial to describe the state of children, adding depth and complexity to the sentence.
3.Comparative structure: "they aren't as entrenched in routines or habits as adults tend to be" uses a comparative structure to contrast children with adults, enhancing the clarity and richness of the expression.
4.Noun phrase as a subject: "This openness" serves as the subject of the sentence, using a relatively complex noun phrase to describe a characteristic of children, enhancing the depth and complexity of the expression.