Grammarly
Grammarly Blog: Common Errors in English: Bad or Badly
This Grammarly Handbook resource clarifies the difference in usage between "bad" and "badly" in sentences. Numerous examples are provided in this resource.
Get It Write
Get It Write: Bad or Badly
Not only does this tutorial give you instructionon the correct usage of "bad" and "badly," it also gives a general review of the role of adjectives and adverbs. After reading through the examples, there is a brief quiz to check your...