1 health 是名詞,意為“健康,健康狀況”。
He is in good health . 他身體健康。
Health is better than wealth . 健康勝于財富。
2 healthy 是形容詞,意為“健康的”,指身體。
She looks healthy . 她看上去很健康。
He takes exercise every day to keep healthy . 他每天運動保持身體健康。
He is a healthy old man. 他是一位健康的老人。
3 healthful 是形容詞,意為“有益健康的,衛(wèi)生的”,多指運動、食物、氣候等。
The climate near the sea is healthful . 海邊的氣候有益于健康。
Swimming is a healthful exercise. 游泳是一項有益健康的運動。