as well和as well as的区别为：侧重点不同、含义不同、用法不同。
一、侧重点不同
1.as well
解析：as well一般不用否定句，通常放在句末，强调时可放在句中。
2.as well as
解析：as well as是书面语用词。
二、含义不同
1.as well
释义：也，还。
2.as well as
释义：既…又…，除…之外（也），此外。
三、用法不同
1.as well
用法：在用法上相当于“too”，译为：“也，还“，放在句子末尾使用。
例句：I'll come with you if you like. I might as well.
译文：如果你想的话，我会和你在一起来。我无所谓。
2.as well as
用法：as well as常译作“不但、而且；还有”。在连接两个物或人的时候，侧重点通常在前者，注意这里用的谓语动词是单数形式，因为as well as 连接的两个人和物，侧重点在前者，这里的主语只有as well as前面的部分，因此用谓语单数形式。
例句：It is in his best interests as well as yours.
译文：这符合他的最大利益，同时也符合你的利益。
一、侧重点不同
1、as well
解析：as well一般不用否定句，通常放在句末，强调时可放在句中。
2、as well as
解析：as well as是书面语用词。
二、含义不同
1、as well
释义：也，还。
2、as well as
释义：既…又…，除…之外（也），此外。
三、用法不同
1、as well
用法：在用法上相当于“too”，译为：“也，还“，放在句子末尾使用。
例句：
I like Tom and Tom likes me as well.
我喜欢汤姆而且汤姆也喜欢我。
Her novels are well written and commercial as well.
她的小说写得好，销路也广。
2、as well as
用法：as well as常译作“不但、而且；还有”。在连接两个物或人的时候，侧重点通常在前者，注意这里用的谓语动词是单数形式，因为as well as连接的两个人和物，侧重点在前者，这里的主语只有as well as前面的部分，因此用谓语单数形式。
例句：
Nursing is a vocation as well as a profession.
护理工作既是职业又是救死扶伤的责任。
A teacher should entertain as well as teach.
教师不仅要教书，也要激起学生的兴趣。
本回答被网友采纳这一对短语仅差一字之微,意义相近,故很易引起混淆.
作为习语用作介词时,as well as的涵义是“还有”、“不但…而且…”.值得注意的是,在A as well as B的结构里,语意的重点在 A,不在 B.因此,“He can speak Spanish as well as English．”的译文应该是：“他不但会说英语,而且会讲西班牙语”,决不能译作：“他不但会说西班牙语,而且会讲英语”.如果这样翻译,就是本末倒置了.as well as和 not only… but also…同义,但前者的语意重点和后者的语意重点恰好颠倒.
如果 as well as用作连词引出比较从句,其义为“和…一样好”.因此,“He speaks Spanish as well as English．”应译作：“他说西班牙语像说英语一样好”.语意的重点依旧在前部,不在后半部.
请注意 as well as以下的用法：
She called on you as well as I．
不但我来看你,她也拜访了你.
She called on you as well as me．
她不但拜访了我,也拜访了你.
在下列句中,as well as表示“像…一样”的涵义：
She as well as you is an English teacher．
她像你一样也是英文教师.
这里的谓语动词用is,不用are,因为句中的主语是she,不是she和you.
As well是副词短语,其义为“也”,相当于too,它一般放在句末,有时和连词and或but搭配使用.例：
He is a worker,and a poet as well．
他是工人,但也是诗人.
China possesses enormous quantities of coal and is rich in other minerals as well．
中国拥有大量煤炭,其他的矿藏也很丰富.
Mr．Liu can speak English,but he can speak Cantonese as well．
刘先生会说英语,但他也能讲广东话.
综合
As Well的用法
99年高考11小题 __ you've got a chance,you might as well make full use of it .
A Now that B After C Althopugh D As soon as
大部分学生对此题意思弄不太清楚,主要是对as well理解得不对,造成失误.现把as well的用法简单总结如下：
一、as well常用于肯定句句尾,表示“还,也”等意思.
1.He knows French,and he knows English as well.
他懂法语,他也懂英语.
2.Wang Hai is a worker and a militiaman as well.
王海是个工人,也是个民兵.s
二、as well后接as,边接两个同类项,表示“不但,而且,和跟”等意思,强调as well前面的人或事物.
1.He came as well as his brother.
不仅他哥哥来了,而且他也来了.
2.He gave me clothes as well as food.
他既给我食物,又给我衣服.
三、as well as和动词连用,表示同类事物相比较,结果一样好.
1.He can speak English as well as you do.
他英语说得和你一样好.
2.She sings as well as her sister.
她和她姐姐唱得一样好.
四、as well和may(might)连用,作谓语的一部分,may(might)as well表示请求、建议,might比may语气更委婉,意思是“最好、何不、不如”等.
1.You may as well tell me the truth.
你最好对我说实话.
2.You might as well go.
你还不如走呢.
99年高考11题中might as well就是表示“建议”,意思可理解为had better,弄明白了might as well的意思,此题的答案就一目了然了,答案应选A,句子大意是“既然你得到了机会,你最好要充分利用它.”
一、as well 用法：
1、as well常用作状语，作“又；也”解，相当于too或also，常位于句末，无须用逗号与句子分开。如：
I am going to London and my sister is going as well（＝going，too）. 我要到伦敦去，我妹妹也要去。
I not only play the guitar，I sing as well（＝I also sing ）. 我不但弹吉他，而且还演唱。
2、as well 在口语中也可用于句中，作“也好，也行”或“倒不如”解，用来缓和语气。如： You may as well go、 你去也好。
The weather was so bad that we might（just）as well have stayed at home. 天气太坏了，早知道如此，倒不如呆在家里为好。
3、as well 可以直接用于just后，用作应答语（可视为It's just as well、的省略），作“幸亏，幸而；无妨；没关系”解。如： —We were too late to see the film. 我们去得太晚了，没有看上电影。 —Just as well、I hear it isn't very good. 不必遗憾，我听说电影也不怎么样。 二、as well as 用法
1、as well as常用来连接两个并列的成分，作“也，还”解。它强调的是前一项，后一项只是顺便提及。因此连接并列主语时，谓语动词与前一项一致；而用not only ...but also...连接时，谓语动词与后一项一致。如： Your wife as well as you is friendly to me. 不仅你而且你的妻子也对我很友好。
（＝Not only you but also your wife is friendly to me、）
Electric energy can be changed into light energy as well as into sound energy. 电能既可以被转变成声能，又可以被转变成光能。
2、as well as 用来表示同级比较，指“一样好”。如： You look as well as you did ten years ago.
你的身体看起来还和十年前一样好。 He plays the guitar as well as you. 他的吉他弹得和你一样好。