🌦️ Modal Verbs for Expressing Possibility: Will, Can, May, Could, Might

These modal verbs are commonly used to express how certain or possible something is. Each modal shows a different level of certainty or possibility. Below is a detailed explanation of each, ordered from most certain to least certain.

🔢 Ordered by Certainty

  1. Will – 100% (Certain)
  2. Can – 70–90% (Generally Possible / Realistic)
  3. May – 50–70% (Neutral Possibility)
  4. Could – 40–60% (Less Likely / Hypothetical)
  5. Might – 20–40% (Least Likely)

✅ 1. WILL – 100% Certain

“Will” is used to express something that is certain or strongly expected to happen.

  • Example: She will pass the test. (certainty)
  • Example: It will rain tomorrow. (forecast prediction)

✅ 2. CAN – Strong Possibility / Ability

“Can” shows that something is possible in general, or that someone has the ability to do it. It is not about a specific prediction, but about general or realistic possibilities.

  • Example: Fires can spread quickly in dry forests. (general possibility)
  • Example: She can speak four languages. (ability)

✅ 3. MAY – Medium Possibility (50%–70%)

“May” is used when something is possible but not certain. It is more formal and neutral than “might.”

  • Example: They may arrive later today.
  • Example: I may go to the concert if I finish work early.

✅ 4. COULD – Less Certain Possibility (40%–60%)

“Could” implies a hypothetical or less certain possibility, especially when considering different options or outcomes.

  • Example: She could be at the café, or she could be at home.
  • Example: This strategy could work if we adjust it.

✅ 5. MIGHT – Weak Possibility (20%–40%)

“Might” expresses the weakest degree of possibility. It is often used for suggestions, doubts, or low-probability events.

  • Example: He might come to the party, but I’m not sure.
  • Example: I might apply for that job, but I haven’t decided yet.

📊 Summary Table of Possibility

Modal Certainty (%) Typical Use Example
Will 100% Certain prediction or fact She will pass the test.
Can 70–90% General possibility or ability It can be very hot in July.
May 50–70% Neutral possibility He may join us later.
Could 40–60% Hypothetical possibility We could try a different approach.
Might 20–40% Low probability She might visit us next week.

📝 Notes

  • All these modals are followed by the base form of the verb (e.g., go, do, be).
  • They do not add -s for third person singular.
  • They are used in both spoken and written English to express probability or possibility.
{“title”:”Modal Verbs of Possibility Exercises”,”content”:”
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🔤 Instruction:

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Rewrite each sentence using the correct modal verb: choose from the two given in brackets. The beginning of each sentence is provided for you.

\r\n\r\n
    \r\n
  1. \r\n I’m not sure, but it’s possible that they’ll agree. (Rewrite using may or will)
    \r\n 👉 They \r\n
    2. \r\n
  2. \r\n It’s certain that the sun will rise tomorrow. (Rewrite using might or will)
    \r\n 👉 The sun \r\n
    3. \r\n
  3. \r\n She has the ability to play the piano very well. (Rewrite using can or might)
    \r\n 👉 She \r\n
    4. \r\n
  4. \r\n It’s unlikely, but we could win the match. (Rewrite using could or will)
    \r\n 👉 We \r\n
    5. \r\n
  5. \r\n It’s possible that he’s already left. (Rewrite using could or will)
    \r\n 👉 He \r\n
    6. \r\n
  6. \r\n We’re certain she’ll come to the meeting. (Rewrite using will or might)
    \r\n 👉 She \r\n
    7. \r\n
  7. \r\n If we hurry, there’s a small chance we’ll catch the bus. (Rewrite using might or will)
    \r\n 👉 We \r\n
    8. \r\n
  8. \r\n It’s highly likely the team will win again. (Rewrite using will or may)
    \r\n 👉 The team \r\n
    9. \r\n
  9. \r\n It’s a possibility, but not a strong one. (Rewrite using might or will)
    \r\n 👉 It \r\n
    10. \r\n
  10. \r\n These plants grow well in hot weather. (Rewrite using can or might)
    \r\n 👉 These plants \r\n
    11. \r\n
  11. \r\n There’s a good chance she’ll accept the offer. (Rewrite using will or might)
    \r\n 👉 She \r\n
    12. \r\n
  12. \r\n I’m not certain, but she may come later. (Rewrite using may or will)
    \r\n 👉 She \r\n
    13. \r\n
  13. \r\n The baby has the ability to walk now. (Rewrite using can or could)
    \r\n 👉 The baby \r\n
    14. \r\n
  14. \r\n I doubt he’ll agree to the plan. (Rewrite using might or will)
    \r\n 👉 He \r\n
    15. \r\n
  15. \r\n This treatment usually helps most patients. (Rewrite using can or might)
    \r\n 👉 This treatment \r\n
    16. \r\n
  16. \r\n It’s impossible for her to be in two places at once. (Rewrite using can or could)
    \r\n 👉 She \r\n
    17. \r\n
  17. \r\n You have the ability to change your habits. (Rewrite using can or might)
    \r\n 👉 You \r\n
    18. \r\n
  18. \r\n It’s not certain yet, but the flight may be delayed. (Rewrite using may or will)
    \r\n 👉 The flight \r\n
    19. \r\n
  19. \r\n There’s a small chance he’ll respond today. (Rewrite using might or will)
    \r\n 👉 He \r\n
    20. \r\n
  20. \r\n That athlete is sure to win the gold medal. (Rewrite using will or could)
    \r\n 👉 He \r\n
    21. \r\n
\r\n\r\n \r\n \r\n\r\n
\r\n\r\n \r\n
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