b
Sounds similar to "b" as in "boy", but voiceless. Strictly speaking, it is more like the unaspirated "p" in words like "spoon".
bǐ
pen
笔
bàba
dad
爸爸
p
Sounds like "p" as in "poke".
pá
to climb
爬
pīpíng
to criticise
批评
m
Sounds like "m" as in "mother".
māma
mother
妈妈
māo
cat
猫
a
Sounds like "a" as in "palm".
yá
tooth
牙
āyí
aunt
阿姨
i y
Sounds like "ee" as in "bee" or "y" as in "yeast".
yī
one
一
yā
duck
鸭
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)