I am not a native English speaker and I am having trouble pronouncing the "th" sound in a lot of English words, like "three", and "breathe". Could you please explain to me how to correctly pronounce the "th" sound with my mouth, with specific examples for the words I mentioned?
Sure! The th sound is made by putting your tongue between your teeth (not placing your teeth on your tongue) and breathing out. Here are some tips to help you:

1. Practice saying "thhhh-ree" or "breaht-eh"-style sounds until they feel natural. You can also try making the sound with different vowel sounds. For example, if you say "bressth" instead of "breath," it will be easier to remember the correct way to make the sound.
2. Pay attention to the position of your tongue when you make the sound. Make sure that it's close to your teeth but not touching them.
3. Try saying the word without inhaling too deeply first. This helps to strengthen your muscles used for making the sound.
4. Be patient with yourself as you get better at pronouncing the th sound. It may take some time to adjust, but keep practicing and listening to feedback from others to improve your pronunciation skills.