There are different types of adverbs in the English language. Adverbs of certainty express how certain we feel about an action or event. The most common frequency adverbs are definitely, probably, certainly, and surely.
Example
Explanation
Pineapples definitely belong on pizza.
Definitely is the adverb of certainty used to emphasize that pineapples belong on pizza without a doubt.
Rule 1: We usually place adverbs of certainty before the main verb unless the main verb is to be. In this case, the adverb of certainty goes after.
Example
Explanation
She certainly forgot about our date.
The adverb of certainty (certainly) comes before the main verb (forgot).
She is clearly a keeper.
The adverb of certainty (clearly) comes after the main verb (is) because it's a form of the verb to be.
Rule 2: If there is an auxiliary verb in a sentence, we place the adverb of certainty between the auxiliary and the main verb.
Example
Explanation
We will probably meet tomorrow.
The adverb of certainty (probably) comes between the auxiliary verb (will) and the main verb (meet).
Rule 3: Sometimes, we can place certain adverbs of certainty (undoubtedly, probably, certainly) at the beginning of the sentence.
Example
Explanation
Undoubtedly, Mick Jagger is one of the greatest musicians of all time.
Undoubtedly is the adverb of certainty that comes at the beginning of a sentence and is separated by a comma.
Note: When we place the adverb of certainty surely at the beginning of a sentence, it expresses that one thinks something is true but is looking for confirmation.
Example
Explanation
Surely you're not going to the party in this dress.
Here, the speaker uses the adverb of certainty (surely) to express what they think is true while looking for confirmation.
Quiz
1/4
Complete the sentence. We need a lunch break. (definitely)
0
correct answers.