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.
as well as 是英语中常用的连接词，学生在使用时常常会出现错误，本文将其用法作以下简要归纳和说明。
1. as well as 可连接并列的单词或短语。例如：
It is unpleasant in summer as well as in winter.
夏天不好过，冬天也不好过。
The child is lively as well as healthy.
这孩子既健康又活泼。
2. as well as 连接两个谓语动词时，它们的时态应保持一致。例如：
He publishes as well as prints his own books.
他的书是他自己印刷出版的。
We are repairing the roof as well as painting the walls.
我们在粉刷墙壁同时也在修理屋顶。
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。
She sings as well as playing the piano.
她不但会弹钢琴，而且会唱歌。
3. 如果as well as 前面是动词不定式，那么其后的动词也是不定式，但to要省略。例如：
You cannot expect her to do the housework as well as look after the children.
你不可能叫她既照顾孩子又做家务。
4. 由as well as 连接的复合主语并不影响谓语动词的数。例如：
Helen as well as I is eager to see the performance.
海伦和我一样急于要看演出。
I as well as they am ready to help you. 不仅他们愿意帮助你，我也愿意帮助你。
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都作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.
乔治和他兄弟一样都出国了。
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。
7. as well as 在意义上通常强调前者，而not only …but also在意义上则强调后者。例如：
He”s got a car as well as a motorbike.
他不但有一辆摩托车，而且有一辆小汽车。
（= He”s got not only a motorbike but also a car. ）
8. 注意as well as 有时会引起歧义句。例如：
He can speak french as well as English.
（1）他会说英语，也会说法语。
（2）他说法语能说得像英语一样好。（…as well as he speaks English）