望详解辨析,谢谢!

as well as 用于肯定句中，起连接作用=not only...but also
既......又......；不仅......而且......
He gave me clothes as well as food.他不仅给我衣服而且给我食物。
The child is lively as well as healthy.这个孩子既健康又活泼
He came as well as his brother.不仅他而且他哥哥也来了。
She as well as I IS a teacher.我是教师，她也是。
as well as 重在强调其前面的人或事物，连接并列主语时，谓语动词和前面的人或事物保持一致。
except 指在整体中除去一部分
We all succeeded except Tom.除了汤姆，我们都成功了。（成功的人中没有汤姆）
besides 除...之外（还有...或外加...）
We all succeeded besides Tom.除了汤姆成功外，我们也都成功了。（成功的人中包括汤姆）
也就是说，except表示的是“减法”，而besides表示的是“加法”
但是当besides用在否定句中时，意思等同于except。
I don't care for anything besides this.除了这个外，我不要别的了。
In addition to English,he has to learn a second foreign language.除英语外，他还要学习另一门外语。（加法）
in addition to = besides
Apart from a slight mistake,the answer is correct.=
The answer is correct except for a slight mistake.
除了有一点小错误外，这个答案是正确的。
apart from = except for