How do you pronounce words with the letter d?

Question

I'm foreign and this causes me a lot of trouble. Sometimes the 'd' is pronounced normally [d], for example - done, but sometimes it's pronounced as [dʒ], for example - dream. How should I pronounce words like these? Is there a general rule to this?

Answer 1

"The 'd' sound is made by the tip of the tongue touching the ridge just above and behind the upper teeth. The tongue does not touch the upper teeth." Information taken from Pronunciation Drills by Edith Trager.

To pronounce "dr" words such as dream, drum, drown, drill, drop, etc., move the tongue forward to touch the inside of the upper teeth.