1.Causative verbs: "Laughter is an excellent icebreaker, helping to ease tension" uses the causative verb "helping" to show how laughter can cause or contribute to easing tension, demonstrating a complex grammatical structure.
2.Present participle phrases as adverbials: "making everyone feel more at ease and connected" uses the present participle "making" as an adverbial to describe the result of laughter, adding depth and complexity to the sentence.
3.Noun phrase as subject: "A shared sense of belonging" serves as the subject of the sentence, using a relatively complex noun phrase to describe an abstract concept, enhancing the depth and complexity of the expression.