One of the problems with learning English grammar rules is that there are actually a lot of exceptions. This means that there are lots of times when something doesn’t follow “the rule”. This is why I prefer a more natural approach with LOTS of listening.
For example, words ending with -ed can be pronounced differently and the best way to learn how to pronounce the word properly is to hear it a ton of times. And the best is to do this within the context of things that are interesting to you, such as stories, articles, or blog posts, rather than lists of vocabulary words.
Here is a simple story I wrote to help you with these -ed endings.
The boy jumped off his bike and ran into his house. He walked all around calling for his mom, but nobody answered. He decided to make himself a sandwich, watch some TV and wait for her to get home. He watched two TV programs and had already waited two hours when she finally walked in the front door.
“What took you so long?” he asked.
“I decided to go to shopping after work. I bought you some new shorts and a new pair of shoes,” she answered.
“Awesome! Thanks, mom!” he replied.
“You’re welcome, honey,” she responded, as she kissed him on the cheek.
Click on the link to HEAR me read this post.