Summary
In-depth Explanation
Here are some of the most frequently used adverbs of probability, along with their meanings:
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Definitely, certainly – 100% certain; there is no doubt about it.
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Probably, likely – Likely and expected to happen, but not 100% sure.
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Possibly, maybe, perhaps – Might happen, but there is a chance it will not.
Position of Adverbs of Probability
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Before the main verb: In most cases, the adverb of probability goes before the main verb.
She probably knows the answer.
They certainly made an impression.
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After the verb “to be”: When using the verb “to be,” the adverb of probability goes after it.
The answer is probably correct.
He’s definitely coming to the party.
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At the beginning or end of a sentence: Some adverbs of probability, like “maybe” and “perhaps,” usually go at the beginning of a sentence.
Maybe she’ll join us later.
Perhaps we’ll go on vacation next year.
How to Use Adverbs of Probability
Here are the main ways we use adverbs of probability:
|
Adverbs |
Usage |
Examples |
|
|
Expressing certainty |
• definitely |
These adverbs show strong certainty; the speaker is confident that something will happen. |
She will definitely pass the exam. They are certainly making good progress. |
|
Expressing likelihood |
• probably |
These adverbs show that something is expected to happen, though it is not certain. |
It will probably rain tomorrow. He’s likely to arrive late. |
|
Expressing possibility/uncertainty |
• possibly • maybe |
These adverbs indicate that something could happen, though it is not guaranteed (the speaker is not sure). |
Maybe he’ll call you after work. Perhaps they’ll come to visit us this weekend. |