
To master the use of words that indicate how likely something is to happen, focus on identifying the placement of such words within sentences. Words like “probably,” “likely,” and “certainly” help clarify the degree of uncertainty or assurance in a statement. Practice spotting these words and understanding how they modify verbs or entire sentences.
Start by examining different contexts where these words are used. For example, “She will likely attend the meeting,” vs. “She is definitely attending the meeting.” Notice how the former expresses less certainty compared to the latter. This variation is key to conveying nuanced meanings about events or actions.
Next, familiarize yourself with common words used to show varying degrees of certainty. “Possibly” indicates a low likelihood, while “certainly” shows strong confidence. Regularly practicing with these expressions will improve your understanding of how to appropriately use them in everyday conversation or writing.
Using Probability Words in Sentences
To get the most out of exercises on expressing likelihood, focus on practicing with sentences that include terms like “probably,” “definitely,” and “possibly.” These words modify the verbs to indicate how likely an action or event is to occur. For example, “She is likely to succeed” shows a higher possibility than “She is unlikely to succeed.”
Pay attention to the placement of these words. They usually appear before the verb, but sometimes they can follow auxiliary verbs. For instance, “He will certainly attend” versus “He certainly will attend.” Recognizing their proper positioning will help improve sentence structure and clarity.
Practice identifying these words in different contexts to build familiarity. Use exercises that ask you to fill in the blanks with appropriate terms, such as “She will __ complete the project on time,” where options like “probably,” “definitely,” or “likely” could fit. This will sharpen your ability to choose the most fitting word based on the level of certainty in the situation.
How to Use Probability Words in Different Contexts
To convey varying degrees of likelihood, it’s crucial to understand how to incorporate probability terms in various scenarios. In casual conversations, words like “probably” and “likely” can express uncertainty. For example, “She will probably call later” suggests a fair chance but not absolute certainty.
In more formal or academic settings, stronger terms like “certainly” and “definitely” are often used to indicate high likelihood or surety. A sentence such as “The event will certainly take place next week” leaves little room for doubt.
Context also plays a significant role. When discussing events or situations that are less predictable, terms such as “possibly” and “unlikely” are effective. For instance, “He may possibly attend the meeting” shows a lower chance, while “It is unlikely that he will attend” presents a more definitive form of low probability.
Common Terms Expressing Likelihood and Their Meanings

Words like “definitely” express a high degree of certainty. For instance, “She will definitely attend the event” implies no doubt about the action occurring.
“Probably” suggests a strong possibility but with some uncertainty. An example would be “He will probably finish the project by tomorrow,” indicating that the action is likely but not guaranteed.
In contrast, “possibly” indicates a weaker chance. “They may possibly visit us next week” suggests that the event could happen, but it’s far from certain.
“Unlikely” implies that something is not expected to occur. “It’s unlikely that she will join the team” shows that the action is not very probable.
Another term, “certainly,” expresses complete assurance. “She will certainly accept the offer” conveys that there is no doubt the action will happen.
Exercises for Practicing Likelihood Expressions
1. Complete the sentences by filling in the blanks with the appropriate expression of likelihood:
- It is _______ that she will arrive on time. (certainly)
- We will _______ see them at the party tomorrow. (probably)
- It’s _______ that they will finish the project today. (unlikely)
- They _______ go to the beach if the weather is nice. (possibly)
- He will _______ pass the exam since he studied hard. (definitely)
2. Choose the correct option that best fits the sentence:
- They _______ be traveling abroad next year.
- a) definitely
- b) probably
- c) unlikely
- We _______ meet later today.
- a) possibly
- b) certainly
- c) unlikely
- The team will _______ win the championship.
- a) definitely
- b) possibly
- c) unlikely
3. Correct the sentences by replacing the wrong expression with the correct one:
- She is unlikely to pass the test because she didn’t study. (incorrect)
- He definitely go to the meeting tomorrow. (incorrect)
- We might possibly finish the project by next week. (correct)