高考真题直通车：
You don’t look very______ .Are youill?
No,I’m just a bit tired.
A.good B.well C.strong D. healthy
许多人以后是同义词，可以互换使用，其实不然。
1. healthy [ˈhelθi] adj.
健康的;健壮的;有益于健康的;反映健康的
反义词： unhealthy
health [helθ]n.
人的身体(或精神)状况;健康;医疗;保健;卫生
be in good health保持健康；keep fit保持健康stay healthy/keep healthy保持健康
另外，healthful adj.有益于健康的[ˈhelθfl]
You will have a longer life if you eat healthful food.
如果你吃有益健康的食品，就会活得更长久。
《外研社英语同义词辨析词典》
The air at the seaside is healthful.
海边的空气有利于健康。
当我们谈到人生、财富、健康、养老、医疗等问题时候，这个健康就是healthy，是抽象的健康，也指大健康，长远的经常性的健康，是泛指；也可以是做定语的那个健康都是healthy。
a healthy child/animal/tree
健康的孩子 / 动物 / 树
Mary gave birth to a healthy baby girl.
玛丽生了个健康的女婴。
She was delivered of a healthy boy.
她生下一个健康的男孩儿。
She gave birth to a healthy baby-boy.
她生了一个健康的男婴。
She preached about the benefits of a healthy lifestyle.
她宣扬了健康生活的好处。
Keep healthy by exercising regularly.
经常锻炼以保持健康。
Keep healthy by eating well and exercising regularly.
通过良好饮食和经常性锻炼保持健康。
a healthy diet/climate/lifestyle
对健康有益的饮食 / 气候 / 生活方式
Most of us need to lead more balanced lives to be healthy and happy.
我们中大多数人需要过更为平衡的生活，以保持健康和快乐。
What I really want is to live healthily for as long as possible.
我真正想要的是健康长寿。
First, some basic facts about healthy eating!
首先，说说健康饮食的几点基本事实！
You should try to combine exercise with a healthy diet.
你应该把锻炼和健康饮食结合起来。
More information on healthy foods should be provided at the point of sale.
销售点应提供更多有关健康食品的资料。
Healthy people do not need vitamin supplements.
健康的人不需要额外补充维生素。
Though old, my grandpa looks very strong and healthy.
我爷爷虽然老了，但他看上去还是很健壮。
2. well：暂时的或某一时期的“健康的”，一般多是对话，说话人表示自己身体没有问题，是健康的，是一种表达。well尤用以谈自己的健康、询问别人的健康或评价身体情况。
有些特指的那种健康之意。通常但只作表语。
I'm not feeling very well.
我感觉身体不太好。
Is he well enough to travel?
他身体怎么样，能够旅行吗？
Get well soon! 愿早日康复！
He's not a well man.
他身体不太好。（老旧的说法，现在不常用）
Previous to this, she'd always been well.
这以前，她身体一向很好。
I don't feel very well today.
我今天感觉不太舒服。
答案：B