How do I tell the difference between "ing" and "in"?
The difference between "in" and "ing" is in the ending sound. Say "in", hold it for a second or two, and feel the position of your tongue. Your tongue should be in the front, touching the roof of your mouth just behind your front teeth. Then say "ing", and do the same. Your tongue should be at the back of your mouth. Try to hear the difference in sound when you do this exercise. Differentiating the sound will come with practice. Hope this helps.