一、用作连词
al well as可以用来连接两个相同的成分，如名词、形容词、动词、介词，通常不位于句首。此时，as well as连接的虽然是两个并列成分，但强调的重点在前面，不在后面，意思为“不但……而且……”、“既……又……”、“除了……之外，还有……”翻译时要先译后面，再译前面。例如：
1. Living things need air and light as well as water.
生物不仅需要水，还需要空气和阳光。（连接名词）
2. She helped Tom as well as I. = She and I helped Tom.
我帮了汤姆的忙，她也帮了汤姆的忙。（连接主格代词）
3. She helped Tom as well as me. = She helped Tom and me.
她帮了我的忙，也帮了汤姆的忙。（连接宾格代词）
4. She continued her own work as well as hepled me.
她除了帮助我，还继续自己的工作。（连接动词）
5. He finds the mass of materials before, as well as after exeperiments. 他不但在实验后，还在实验前求出材料的质量。（连接介词短语）
6. The child is lively as well as healthy.
这孩子既健康又活泼。（连接形容词）
二、用作介词
此时，as well as相当于besides，in addition to，意思为“除……之外”，后面通常接名词或动词，尤其是位于句首时。
As well as / Besides / In addition to eating five course meals, they drank seven bottles of wine.
除了五道菜外，他们还喝了七瓶酒。
三、well用于as…as的结构中
这种as well as结构表示比较，引起一个比较状语从句。例如：
He can operate the machine as well as I do.
他操纵这台机器和我一样熟练。
