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.
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.
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
1.be good at 与 do well in两者均可表示“擅长”.
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.
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.
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