Adverbs that show certainty

• When you are certain that your facts or opinions are accurate, use adverbs like evidently, naturally, undeniably, undoubtedly, or clearly.
• These adverbs are usually (but not always) placed at the beginning of a sentence, followed by a comma:

Evidently, Smith (2003) believes that none of the samples could…

Undeniably, the findings prove…

The findings were clearly in agreement with…