ü yu
Sounds like "ee" as in "bee" but with the lips rounded like "u" as in "rune". Same as "u" in French "tu" or ü in German "über".
nǚ
female
女
fǎlǜ
law
法律
yuǎn
far
远
yīnyuè
music
音乐
(i)e (y)e (ü)e (yu)e
Sounds like "e" as in "yes".
yě
also
也
yuè
moon
月
er
Sounds like "ar" as in "car". In some northern dialects of Chinese, the final of some syllables can change to become r-colored.
èr
two
二
yīdiǎnr
a bit
一点儿
yòu'éryuán
kindergarten
幼儿园
Single-syllable audio courtesy of the AllSet Learning Chinese Pronunciation Wiki, used with permission.
HSK word audio courtesy of Audio-cmn. (CC BY-SA 3.0)