1.Modal verbs: "parents should definitely teach their children" uses the modal verb "should" to express obligation, showcasing a strong recommendation.
2.Noun phrase as subject: "the art of cooperation" serves as the subject of the sentence, using a complex noun phrase to describe a skill, enhancing the depth and complexity of the expression.
3.Infinitive phrase as adverbial: "to listen and respect others' opinions" functions as an adverbial to describe the purpose of teaching, adding complexity to the sentence.
4.Parallel structure: "build strong relationships and become effective team players" uses parallel structure to emphasize two key outcomes of learning cooperation, showcasing a complex sentence structure and diverse expression.