"I want to become a basketball star" 这句话来源于英语语境中对于篮球明星的描述，其中"I want" 是表示主语的意愿，"to become" 是表示变成的动词，"a basketball star" 是表示目标的名词短语。
一些英文例句及其中文翻译如下：
"I've always dreamed of becoming a basketball star." 我一直梦想着成为篮球明星。
"I'm working hard to achieve my goal of becoming a basketball star." 我正在努力实现成为篮球明星的目标。
"It's my pfelong ambition to become a basketball star." 成为篮球明星是我一生的抱负。