health 和healthy的用法keep health 还是 keep healthy?是 stay health 还是stay healthy?哪个正确?

keep healthy
stay healthy
health 是名词
healthy 是形容词

keep healthy
stay healthy
health是名词。healthy是形容词。
health名词
n. 健康,卫生,保健
Fresh air and exercise are good for the health.
新鲜空气和运动有益于健康。
It is believed that health is above wealth.
一般人都相信健康重于财富。
Smoking is not good for your health.
吸烟对你的健康没有好处。
Smoking is bad for health.
吸烟对身体有害。
healthy形容词
a. 健康的
His grandpa is healthy.
他的祖父身体健康。
Although my uncle is old, he looks very strong and healthy.
我的叔叔虽然老了，但他看上去还是很健壮

keep healthy = stay in healthy = keep in good health 保持健康.
keep,stay 表示：保持,后面要接形容词作其表语,而不能接名词health.
heath 表示：健康,是名词.
healthy 表示：健康的,是形容词.
祝你学习进步,更上一层楼!(*^__^*)
有不会的可以再问我:）