1. We learned how to use the right be verbs.

Question

2. We learned how to use the verbs be right.

3. We learned how to use the be verbs right.

4. We learned how to use the verb be right.
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Which ones are correct grammatically?

Answer 1

#1 is good.
#2, 3, & 4 should be, "We learned how to use the be verbs correctly."

In all instances, "correctly" is correct. "right" is colloquial, and often used, but not the best. So #1 could better be, "We learned how to use the correct be verbs."