In English, there are 3 ways to pronounce 'ed' at the end of a word. The pronunciation depends on the sound at the end of the main verb and whether it is 'voiced or 'unvoiced'.
What is a 'voiced' sound? Well, if a sound vibrates in your throat then it is 'voiced'. For example: All vowels are 'voiced'.
It can be confusing but here are the rules to help you!
The first sound is 'id'.
We use the 'id' pronunciation for all infinitives that end in 't' or 'd' sound.
The 2nd sound is 'd'.
We use this pronunciation for all infinitives that end in a 'voiced sound'.
The 3rd sound is 't'.
We use this pronunciation for all infinitives that end in an 'unvoiced' sound.
We hope this gave you a better understanding of how to pronounce 'ed' in English! Keep practising and leave your pronunciation questions in the comments!