I don’t know him from Adam.
> This is particularly important if you ever visit the UK because, if you try to speak American English there, most people will not understand a lot of your accent and American dialect because, it is not the English that British people speak.
> American English is so very different, because it is spoken and written, in its own, particular dialect (this means words, names, slang, phrases, expressions, grammar and spellings that are its own).
> It also, is always spoken in its own accents, which are very strong and distinctive. Most are harsh and whining. Even the milder American accents, are still very strong.
Maybe I should just flag it.
> If you learn American English, you will be instantly noticeable for having a harsh, whining accent. You would not only be learning a language but, you would also learn a very strong and foreign (non-English) accent.
> What foreigners need to know most of all, is what I just wrote, above.
> If communicating with other, non-British English speakers, you should generally, use their dialect as well. Although, their dialects are usually a lot less than American dialect.
> When communicating with English or other British people, it is not necessary to use any dialect or accent at all.
> You should instead, use the actual, English English words and grammar. These are spoken and understood by British people generally, even those who speak a particular, regional dialect and accent of England and, those who speak other, British forms of English. For example, Scottish and Cornish people.