"As well as" generally means "in addition to". But it seems to me that this phrase can also mean "and". Is my understanding of this phrase correct? Thank you very much!
And of course 'Tom speaks Mandarin as well as Sue' can mean something entirely different
***** NOT A TEACHER *****
(1) I am worried that a few learners may not understand Bob's excellent comment.
(2) Bob reminds us that if you use "as well as" in the way in which he has used it,
then it means something like:
Tom speaks Mandarin as well as Sue [speaks Mandarin well].
= Both Tom and Sue speak Mandarin equally well.