Even experts can learn something from them.
But that's not to say that our worksheets are only for beginners. And learners of English as a Second Language (ESL) may find these worksheets especially helpful. That's why we start with this verb in the list of worksheets on this page - we know how useful it is to beginning learners. For example, take the English verb, 'to be.' Almost ubiquitous in our language, this verb is very simple yet very useful.
After all, research tells us that studying verb tenses is a great way to learn the fundamental aspects of language. But while they may not exactly be wonderful, they are certainly useful. Aren't verb tenses wonderful? No? Well, okay.