as well as和as well相当与汉语中的“也”。不过as well as是连词词组，而as well是副词词组，因而它们在句子中的位置和所起的作用不同。

as well as译成汉语时，常作“除……之外，还……”，“和……一样……”，“既……又……”，“不但……而且……”解，用来连接句子中并列的词短语和句子等等。例如：
(1) Nie Haisheng and Fei Junlong as well as Yang Liwei are the national heroes.
聂海胜、费俊龙与样利伟一样也成为人民英雄。
(2) He gave me some money as well as advice.
他除了给我忠告外，还给了我一些钱。
(3) It is unpleasant in summer as well as in winter.
夏天不好过,冬天也不好过.

而as well起副词作用，其语气相当于too或also，不起连词作用，放在句尾。例如：
(1) I like Chang’e I and I like Shengzhou VI, as well.
我喜欢嫦娥一号，也喜欢神州六号。
(2) Does the price include breakfast only, or dinner as well?
这价格只包括早餐，还是也包括晚餐？
(3) Schools will have to teach computer skills as well.
学校还教计算机技能。

as well也可位于句中，例如：She has invited as well some of her own family. (她还邀请了自己家里的一些人。)

另外as well还可以在not only…but…as well结构中，以代替not only…but also或not only…but… 例如：
He not only speaks English fluently but also writes English well as well.
=He not only speaks English fluently but (also) writes English well.

在使用as well as时，有以下几种情况要注意：
1、as well as作“不但……而且……”讲时，与not only…but also…不同；not only…but also…强调的是后部分内容，而as well as则把强调的重点放在前部分。也就是说：A as well as B = not only B but also A。例如：
The book tells about Mark Twain’s life as well as about his writings.
= The book tell about not only Mark Twain’s writings, but also his life.
这本书不但谈了马克吐温的作品，而且还谈了他的平生。
2、连接两个主语时，谓语动词要与第一个主语的人称和数保持一致。例如：
Mr. Smith, as well as his wife and children, was invited to the party.
史密斯先生和他的妻子、孩子一起被邀请参加晚会。
3、在连接并列结构时，要注意前后的一致性。例如：
You cannot expect her to do the housework as well as look after the children.
你不能指望她既要照顾孩子们又要做家务。（注：look after之前的不定式符号to要省去。）
4、as well as与动词连用时，其后可用V-ing形式，尤其as well as位于句首时，此时相当于in addition to。例如：
As well as breaking his leg, he hurt his arm.
他不但摔断了腿，而且还伤了胳膊。
5、as well as连接的人称代词既可以是主格也可以是宾格。但句意不同。例如：
They have invited you as well as me.
他们邀请了我，也邀请了你。（you和me都是invited的宾语）
They have invited you as well as I.
他们和我一样都邀请了你。（they和I都作invited的主语）
6、as well as 用于肯定结构和否定结构中，其意义不同。as well as和not搭配使用，as well as位于not前时，两者均否定；位于not后时，否定前者，肯定后者。例如：
George, as well as his brother, has gone abroad.
乔治和他兄弟一样出国了。
George hasn’t gone abroad as well as his brother.
乔治并没有和他兄弟一样出国去。（他兄弟一人出国）
George, as well as his brother, hasn’t gone abroad.
乔治和他兄弟都没有出国。