After a year of hard work, he finally achieves his dream of starting a business.

achieves 是动词 achieve 的第三人称单数现在时形式。achieve 由前缀 a-（表示"朝向"）和词根 chieve（来自古法语，意为"完成"）组成，意思是"实现、达成"某个目标或梦想。