as good as和as well as區別如下：

1、用於本義，兩者意為“與……一樣好”，但 good 是形容詞，而 well 是副詞。如：他說英語說得跟她一樣好。正：He speaks English as well as her.正：His English is as good as hers.

2、用於引申義，兩者的意思很不相同：(1) as good as 意為“幾乎”“差不多”(=almost)。如：He as good as said I’m a liar.他無異於說我撒謊。習語be as good as one’s word意思是“說話算數”。如：You’ll find that she’s as good as her word.你能瞭解到她這個人很講信用。(2) as well as 表示“而且”。如：She’s clever as well as beautiful.她不但漂亮，而且聰明。

3、A as well as B=not only B but also A該結構連線兩個成分作主語時，其後謂語通常與前面一個主語保持一致。如：Mary as well as her friends is going to Paris.瑪麗和她的朋友要去巴黎。擴充套件資料：（1）Freedom tastes as good as they say it does. 自由的味道如同他們所說的那麼美好。（2）But not as good as you might think. 但事實可能沒你想的那麼好。（3）My dear wife, you are just as good as cured. 親愛的老婆，現在你簡直就跟病好了一樣！（4）It means facing difficulties without denial, as well as fully enjoying thebeauty of each moment. 它意味著不拒絕面對困難，同樣也完全地享受目前每一秒鐘的美好。（5）Your wife as well as you is friendly to me. 不僅你而且你的妻子也對我很友好。

good的用法:

1.Goodisproperlyusedasanadjectivewithlinkingverbssuchasbe,seem, 應該作為形容詞與連繫動詞一起用,如be,seem或 :Thefuturelooksgood.未來一片坦途。eg:Thesouptastesgood.湯的味道不錯。

2.Itshouldnotbeusedasanadverbwithotherverbs:它不能用作副詞來修飾動詞:eg:Thecarrunswell(notgood).汽車行駛正常(不是good)。

3.Thus,Thedressfitswellandlooksgood.SeeUsageNoteatwell2因此裙子很合身,看起來不錯.well的用法:用作形容詞來形容人時,well通常指健康狀況,但是good的意思更加廣泛。在語法評論中,沒有區別就沒有差別一直是第一性原則,也許正是因為如此,一些批評家堅持認為feelgood這一表達方式不能用來指健康。誠然,feelwell與feelgood有區別,但是兩者都可用來指健康。所以一位患有慢性病的病人完全可以對醫生說Ifeelgoodtoday(我今天感覺不錯),這句話暗示著病痛相對減輕了。相反,Ifeelwelltoday(我今天感到全好了)也可以,如果病人確信病症已消失了。

作為習語用作介詞時，as well as的涵義是“還有”、“不但…而且…”。1.在A as well as B的結構裡，語意的重點在 A，不在 B。因此，“He can speak Spanish as well as English．”的譯文應該是：“他不但會說英語，而且會講西班牙語”，決不能譯作：“他不但會說西班牙語，而且會講英語”。如果這樣翻譯，就是本末倒置了。

2.as

well as和 not only… but also…同義，但前者的語意重點和後者的語意重點恰好顛倒。 如果 as well as用作連詞引出比較從句，其義為“和…一樣好”。因此，“He speaks Spanish as well as English．”應譯作：“他說西班牙語像說英語一樣好”。語意的重點依舊在前部，不在後半部。 注意 as well as以下的用法： She called on you as well as I． 不但我來看你，她也拜訪了你。 She called on you as well as me． 她不但拜訪了我，也拜訪了你。 在下列句中，as well as表示“像…一樣”的涵義： She as well as you is an English teacher． 她像你一樣也是英文教師。 這裡的謂語動詞用is，不用are，因為句中的主語是she，不是she和you。as good as…意思是 相等於，就像，幾乎如；實際上，其實，實在。例句: A brave fellow is as good as his words, a swift horse needs no spurring. 勇者一言，快馬一鞭。 A change of work is as good as a rest 調換一下工作是很好的休息 A miss is as good as a mile 失之毫釐,謬以千里

如果都是用

as...as

表示"和...一樣”的意思的話good是形容詞,well是副詞,所以good只能用在be動詞後面,well用在動作後面例如：He is as good as me.他和我一樣好He does as well as me.他做的和我一樣好as well as 還有一個意思是“以及”的意思,和"and"差不多例如：I like apples,orange as well as bananas.