She is good at English and French _.That is,she can speak English_,

as well.副词短语.一般放于句末.
as well as adv.也,又既…又…； 除…之外（也）； 此外
as well as 可连接并列的单词或短语
well 是好的意思 speak english well.她英语说得很好.
还有什么不懂可以追问我喔.