ㄅ
Sounds similar to "b" as in "boy", but voiceless. Strictly speaking, it is more like the unaspirated "p" in words like "spoon".
ㄅㄧˇ
pen
笔
ㄅㄚˋㄅㄚ˙
dad
爸爸
ㄆ
Sounds like "p" as in "poke".
ㄆㄚˊ
to climb
爬
ㄆㄧㄆㄧㄥˊ
to criticise
批评
ㄇ
Sounds like "m" as in "mother".
ㄇㄚㄇㄚ˙
mother
妈妈
ㄇㄠ
cat
猫
ㄚ
Sounds like "a" as in "palm".
ㄧㄚˊ
tooth
牙
ㄚㄧˊ
aunt
阿姨
ㄧ
Sounds like "ee" as in "bee" or "y" as in "yeast".
ㄧ
one
一
ㄧㄚ
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)