he has been healyhy/health since he stopped smoking 用哪个?加不加Y 还有health和healthy用法

healthy,healthy是形容词,意思是健康的,而health是名词,意思是健康.具体用法如下：healthy 健康的,健壮的 That book is not healthy reading for a child.那本书很不健康,不适宜孩子阅读.有益于健康的 Swimming is a...