The /n/ /m/ and /ŋ/ sounds.

/m/ is the sound in me, summer, 
and comb.
To make the /m/ sound:
-Keep your lips together.
-Use your voice to make a sound.
-Let the sound go through your 
nose as you breathe.

/n/ is the sound in now, sunny, 

and new.

To make the /n/ sound:

-Push your tongue to the top of your 

mouth

-Make sure the sides of your tongue

are touching your side teeth

-Use your voice to make a sound 

and let the sound go through your 

nose as you breathe

/ŋ/ is the sound in thing, think, 

and single.

To make the /ŋ/ sound:

-First, practice the /g/ sound.

-Push the back of your tongue up 

against the roof of your mouth as

if you were making the /g/ sound.

-Keep your tongue in that position

while you use your voice to make

a sound.

And now...some practice:

Practice the /ŋ/ sound here: /ŋ/

Practice here the three sounds: /n/ /m/ /ŋ/