"I want to help the elderly"是表达想要帮助老年人的英文句子。如果想要更具体地表达如何帮助老年人,可以说"I want to help the elderly by volunteering at a senior center, providing companionship, or assisting with daily tasks."(我想通过在老年中心做志愿者、提供陪伴或协助日常任务等方式来帮助老年人。)同时,也可以加入一些情感色彩,例如"I feel that it's important to support the elderly community and show them respect and care."(我认为支持老年社区、向他们展示尊重和关爱很重要。)