except和beside和as well as有什么区别

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.

besides:1.除...之外还有
2.用在否定词后，表示除...之外没有
except:除了...之外（表示所说的不包括在内）
as well as 是“以及”的意思，类似与“and”,as well as 放在句中.