1. Relative clause: "occasions that call for a party" uses a relative clause to add detail to "occasions," making the sentence more complex and descriptive.
2. Present simple tense: The answer uses the present simple tense throughout (e.g., "are," "want to share," "bring," "celebrate"), which is appropriate for talking about general truths or habits.
3. Infinitive of purpose: "to bring both families together" and "to celebrate love and commitment" use the infinitive form to explain the purpose of holding a party, which is a natural and effective structure in spoken English.
4. Compound sentence: "These are major life events, and people want to share their joy with friends and family." This compound sentence connects two related ideas smoothly, showing a good command of sentence structure.