as well与as well as只有一词之差,但意义和用法却相差甚远.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 -----是英语中常用的连接词,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.【前联原则】：Helen as well as I is dying 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 has 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 has 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.He can speak french as well as he speaks English.9.as well as与动词连用时,该动词应变成动名词形式.如：
①She's got a cleaning job at night,as well as working during the day.
她不但白天工作,晚上还当清洁工.
②As well as breaking his leg,he hurt his arm.他不但摔断了腿,而且还伤了胳膊.
③She sings as well as playing the violin.她不但会拉小提琴,而且会唱歌.
④The young man speaks French as well as speaking English.
这年轻人不但会讲英语,而且会讲法语.
【注】as well as后接动名词短语,意为“不但…而且…”,若后接从句,则是比较级,两者不可混淆,请看下列例句：
①She sings as well as she plays.她弹得好,唱得也好.
②He speaks French as well as(he speaks)English.他英语和法语讲得一样好.
[ 验收台]：单项选择题 1、They play all kinds of instruments and sing ____.A、also B、either C、as well D、as well as 2、Tom,____ Jane and Rose,____ going to the farm on foot.A、as long as；is B、as well as；are
C、as long as；are D、as well as；is 3、They travel at full speed by day ____ .A、and night B、and by night as well as
C、as well at night D、as well as by night 4、Mrs Black writes ____ ,if not better than,her husband.A、as well as B、so well
C、so well as D、as well 5、We expect her to do the housework as well ____ after the children.A、as look B、as looking C、and look D、looking 6、She doesn't speak ____ her friend,but her written work is excellent.A、as well as B、as often as C、so much D、as good as 7、Which of the following sentences is right?A、Both father and as well as mother love me.
B、Father as well as mother loves me.