Meaning of ALSO in English
/ ˈɔːlsəʊ; NAmE ˈɔːlsoʊ/ adverb
(not used with negative verbs) in addition; too :
She's fluent in French and German. She also speaks a little Italian.
rubella, also known as German measles
I didn't like it that much. Also, it was much too expensive.
Jake's father had also been a doctor (= both Jake and his father were doctors) .
She was not only intelligent but also very musical.
also / as well / too
Also is more formal than as well and too , and it usually comes before the main verb or after be :
I went to New York last year, and I also spent some time in Washington.
In BrE it is not usually used at the end of a sentence. Too is much more common in spoken and informal English. It is usually used at the end of a sentence:
'I'm going home now.' 'I'll come too.'
. In BrE as well is used like too , but in NAmE it sounds formal or old-fashioned.
When you want to add a second negative point in a negative sentence, use not...either :
She hasn't phoned and she hasn't written either
. If you are adding a negative point to a positive one, you can use not...as well / too :
You can have a burger, but you can't have fries as well.
Old English alswā quite so, in that manner, similarly , composite of all + so .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005