i want to buy a book.哪个是谓语，want to buy吗？还是want？

Question

i want to buy a book.哪个是谓语，want to buy吗？还是want？want to？哪个是宾语～ 还有
i like to swim.哪个是谓语？

Answer 1

是的，want to buy 是谓语。语法上称这种 动词+动词不定式 为“复合谓语”，即后面的不定式动作 to buy 是对主要谓语动词 want 的语义补充。