    Sentence u: It is. quite firm about ther -sound.  when-it follows a vowel-sound or is-at the ends  of. words, not droppirig it as is usual with the  RP but insisting that it. be given’ full value, in  various ways, as if is:in’ Scots and. Irish and,  generally but not always, in. the speech.of most  Aimericans except for those.in: New. England  and the South.    Sentence-2: The Scots, Irish and miost Americans  do not drop the + -sound after a vowel: