Here is a good online reference. htm
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Here is a good online reference.
Don't forget to look for YouTube videos, too. There are tons of videos on English tenses there.
You can start here. Find a presenter you like and do a search for other videos the same presenter does. Put https:// in front of the following link if necessary. (I couldn't get the link to show up correctly in this post.)
www.youtube.com/results?search_query=verb+tenses+in+english+