一、从词性用法上比较
1.
good
只用作形容词，不用作副词，其副词形式用
well。如：
He
speaks
good
English.
他的英语说得好。
He
speaks
English
well.
他的英语说得好。
2.
well
既可用作副词，也可用作形容词。用作形容词时，其用法很有限，只表示“健康的”“恰当的”或“令人满意的”等。如：
She
is
very
well.
她身体很好。
Things
are
well
with
us.
我们事事如意。
注：一般说来，well
用作形容词时，只用作表语而不用作定语(如上例)，但在美国英语中，well
表示“身体健康”时有时也可用作定语。
二、从相关短语用法上比较
be
good
at
与
do
well
in：两者均可表示“擅长”。如：
He
is
good
at
languages.
他擅长学语言。
She
is
good
at
telling
stories.
她擅于讲故事。
They
all
did
very
well
in
the
examination.
他们这次都考得很不错。
注：表示擅长某一学科时，也可用be
good
in。如：
He
is
good
at
[in]
maths.
他擅长数学。
2.
as
good
as
与
as
well
as：用于本义时，两者均可表示“与……一样好”，但
good
是形容词而
well
是副词。如：
他说英语说得跟她一样好。
正：He
speaks
English
as
well
as
her.
正：His
English
is
as
good
as
hers.
但是，用于引申义时，两者的意思很不相同：as
good
as
意为“几乎”“差不多”(=almost)，as
well
as
意为“而且”。如：
The
work
is
as
good
as
finished.
工作差不多干完了。
He
as
good
as
said
I’m
a
liar.
他无异于说我撒谎。
She’s
clever
as
well
as
beautiful.
她不但漂亮而且聪明。
As
well
as
breaking
his
leg,
he
hurt
his
arm.
他不但摔断了腿,
而且还伤了胳膊。
