1. 用于本义，两者意为“与……一样好”，但 good 是，而 well 是。如：
正：He speaks English as well as her.
正：His English is as good as hers.
(1) as good as 意为“几乎”“差不多”(=almost)。如：
He as good as said I’m a liar. 他无异于说我撒谎。
We’re as good as ruined. 我们差不多完蛋了。
习语be as good as one’s word意思是“说话算数”。如：
You’ll find that she’s as good as her word. 你能了解到她这个人很讲信用。
(2) as well as 表示“而且”。如：
She’s clever as well as beautiful. 她不但漂亮，而且聪明。
He speaks Spanish as well as English and French. 他不仅会说英语和法语，而且会说西班牙语。
A as well as B=not only B but also A
Mary as well as her friends is going to Paris. 玛丽和她的朋友要去巴黎。
As well as breaking his leg, he hurt his arm. 他不但摔断了腿，而且还伤了胳膊。
He sings as well as playing the piano. 他不但会弹钢琴，而且会唱歌。
As well as eating [ate, eat] a seven-course meal, they drank three bottles of wine. 除吃了一顿有7道菜的饭之外，他们还喝了3瓶酒。