good形容词，well为副词，前者修饰名词，后者修饰动词。well专指“身体好”，用法可相当于“fine”，good不能“身体好”。well还可做感叹，表示强调和犹豫。二词用法要牢记，千万不能弄混淆。
well的用法
一.用作形容词
1.好的 in a good state or position
It is well that no one saw you.
没人看到你真好。
2.明智的 sensible; a good idea
It would be well to start early.
早点开始的话是明智的。
3.健康的；痊愈的 in good health
Please get well soon.
请尽快康复吧。
二.用作副词
1.良好地；正常地；令人满意地 in a good, right or acceptable way
Well done!
做得好！
2.恰当地；合适地，可取地
The dress becomes you very well.
这件衣服你穿了很合适。
3.夸奖地，称赞地 satisfactorily with respect to conduct or action
They speak well of him.
大家对他赞誉有加。
4.有理由地，恰当地 can / could / may / might ~ with good reason
This theory lends itself well to our new data.
这个理论恰当地适用了我们的新数据。
5.很，相当 to a great extent or degree
This variant is a very space-conservative idiom that is well suited for frequently used
options.
这种变体是一种节省空间的习惯用法，很适合经常使用的选项。
三.用作名词
1.井，水井 [C] an issue of water from the earth : a pool fed by a spring
We have a pump for drawing water from the well.
我们用一个水泵从井里抽水。
2.泉；源泉 [C] source, origin
Life at the well became normal once again.
泉畔的生命又恢复常态。
四.用作动词
涌出，喷出；流出
Tears well in her eyes.
她的眼中涌出了泪水。
good的用法
一.用作形容词
1.好的；优质的；符合标准的；可接受的；
What good weather we're having!
天气多好啊！
2.令人愉快的；令人满意的
We had a really good time together.
我们一起玩得真痛快。
3.合情合理的；有说服力的；有充分根据的
They thought it was a good idea to make some offenders do community service.
他们认为让一些违法者去社区做义工是个好主意。
4.能干的；精通的；娴熟的；擅长于…的
He is good at managing money matters.
他很会理财。
5.助人为乐的，善良的；好心的
Her name is fragrant with good deeds.
她因做好事而芳名流传。
二.用作副词表示“好”
How is it going? Pretty good!
事情进展的如何？非常好！
三.用作名词
1.好处；用处；益处 [U]
I'm giving you this advice for your own good.
我劝你是为你好。
2.（复）goods：商品，货物
Good and inexpensive goods enjoy customers' high praise.
价廉物美的商品，深受顾客欢迎。
3.（the good） 有道德的人；高尚的人；好人
Christians believe the good will go to heaven when they die.
基督教徒相信好人死了进天堂。
4.合乎道德的行为；正直的行为；善行 [U]
Do social workers do a lot of good?
社会工作者的贡献大吗？
