"a" as in "far".
"e" as in "fiance", like "a" in "fate".
[Footnote: This "long a" sound in English frequently ends with a
vanish,--a brief terminal sound of "short i" which makes the vowel
slightly diphthongal, as in "day", "aye". Such a vanish must
not be given to any of the Esperanto vowels.]
"i" as in "machine".
"o" as in "toll", "for".
"u" as in "rude", "rural".