What's the difference between "either" / "also" / "as well" .
In AUS , I heard a lot of "as well" , but I know that "also" and "either" have a similar meaning as well ....So in what situation these words should be used or can't be used ?

Question

What's the difference between "either" /  "also" / "as well" .
In AUS , I heard a lot of "as well" , but I know that "also" and "either" have a similar meaning as well ....So in what situation these words should be used or can't be used ?

Answer

"Also" and "as well" mean the same thing, except they can't always be used in the same place.  For instance, both can be used to end a sentence, but usually only "also" can begin one.

"Either" refers to a choice, such as, "either flowers or candy".  It can be used instead of "also" or "as well" in a negative sense, for example, "I don't like John and I don't like Susan either".

Answer

Also and as well have the same meaning.  Either is the opposite, it means one OR the other.