The audio here is generated speech. A recorded human voice for this lesson is on the way.
The three sounds
M, N and NG all send air through your nose. The only difference is where your mouth closes. For M, your lips close. For N, the tip of your tongue touches the ridge behind your top teeth. For NG, the back of your tongue rises to the soft roof of your mouth, where G and K are made. Hold your nose and try any of them: the sound stops.
NG is the one learners miss. It is a single sound, not N plus G: "sing" does not end with a hard "g". And every -ing word uses it, so it is everywhere: going, thinking, morning. If you say "thin" for "thing", listeners hear a different word.
Hear the difference
Tap each word. Then test your ear.
NG is one sound. "Sing" does not end in a hard G.
M against NG: lips closed for M, back of the tongue raised for NG.
Say it out loud
Tap a sentence to hear it. Say it after the voice.
Practice · 3 min
Say each sentence after the model. Hold your nose on the third sentence for a second: if the -ing sounds stop, you are making them in the right place. Then record the last sentence and listen for "something's", "wrong", "ring" and "finger".
Say it today
Use it once in a real conversation before tomorrow. Out loud counts, even to yourself.