英 [æz wel æz]；美 [æz wel æz]
意思
也，和……一样：用于连接两个并列的成分，表示后者与前者具有相似的情况或性质，强调两者都具备某种特征或都做了某事。例如：He can speak English as well as French.（他既会说英语，也会说法语。）
不但……而且……：连接两个并列的句子成分时，重点在前一个成分，后一个成分起补充说明的作用，语气上不如 “not only...but also...” 强烈。例如：She is smart as well as beautiful.（她不但漂亮，而且聪明。 ）
出处
“as well as” 这个短语由来已久，“as...as...” 结构在古英语中就已存在，用于表示程度上的比较。“well” 原意是 “好地”，后来 “as well as” 逐渐演变成一个常用短语，用于表达 “也”“和……一样” 以及 “不但……而且……” 等含义。
用法造句
The hotel offers good service as well as comfortable rooms.（这家酒店不但提供舒适的房间，而且服务周到。）
She can play the piano as well as the violin.（她既会弹钢琴，也会拉小提琴。）
He is interested in history as well as science.（他不但对科学感兴趣，而且对历史也感兴趣。）
The report focuses on economic issues as well as social problems.（这份报告既关注经济问题，也关注社会问题。）
They grow vegetables in their garden as well as flowers.（他们在花园里不但种了花，还种了蔬菜。）
The new software is easy to use as well as efficient.（这款新软件不但高效，而且易于使用。）
My sister likes reading books as well as watching movies.（我妹妹不但喜欢看电影，也喜欢读书。）
The athlete is strong as well as fast.（这位运动员不但速度快，而且力量大。）
This job requires experience as well as skills.（这份工作不但需要技能，还需要经验。）
The city is famous for its beautiful scenery as well as its rich culture.（这座城市不但以其丰富的文化闻名，还以其美丽的风景著称。）
We should protect the environment as well as save energy.（我们不但要节约能源，还要保护环境。）
The restaurant serves delicious food as well as a wide range of drinks.（这家餐厅不但提供美味的食物，还有各种各样的饮品。）
He can write poems as well as stories.（他不但会写故事，还会写诗。）
The dress is stylish as well as comfortable.（这条裙子不但舒适，而且很时尚。）
They study hard at school as well as at home.（他们不但在家努力学习，在学校也很用功。）
The dog is cute as well as friendly.（这只狗不但友好，而且很可爱。）
The project needs careful planning as well as sufficient funding.（这个项目不但需要充足的资金，还需要精心的规划。）
She speaks Spanish as well as Italian.（她既会说意大利语，也会说西班牙语。）
The painting is valuable as well as beautiful.（这幅画不但漂亮，而且很有价值。）
We need to exercise regularly as well as eat a balanced diet.（我们不但要饮食均衡，还要经常锻炼。）
相关词搭配
连接名词：as well as + 名词，如：fruits as well as vegetables（水果和蔬菜）
连接动词：as well as + 动词 - ing形式，如：swimming as well as running（游泳和跑步 ）
连接形容词：as well as + 形容词，如：big as well as heavy（又大又重）
近义词
also：副词，意为 “也”，通常用于句中，位置较灵活。例如：He also likes music.（他也喜欢音乐。）
too：副词，“也” 的意思，一般用于句末，多用于口语。例如：I like reading too.（我也喜欢读书。）
and：连词，可连接两个并列的词、短语或句子，表示 “和”“并且”。例如：I bought apples and bananas.（我买了苹果和香蕉。）
反义词
严格来说，“as well as” 没有直接的反义词。但如果从表达 “否定的并列” 角度来看，“neither...nor...” 与之相对。“neither...nor...” 表示 “既不……也不……”，连接两个并列的成分，用于否定两者。例如：He neither likes reading nor watching TV.（他既不喜欢读书也不喜欢看电视。 ）