Possibility: May and Might

This lesson focuses on the modal verbs "may" and "might," which are primarily used to express possibility. While often interchangeable, there can be subtle differences in their perceived strength of possibility. Understanding these nuances will help you communicate more precisely when discussing uncertain situations.

The modal verb "may" is a versatile tool in English, frequently employed to indicate that something is possible or that permission is being granted. When expressing possibility, it suggests that something could happen or could be true, without asserting certainty. For example, "It [[pronounce:may:en]] rain later, so you should take an umbrella." This implies a chance of rain, but not a definite forecast.

Similarly, "might" also expresses possibility. Some grammarians suggest that "might" implies a slightly lower probability than "may," though in everyday conversation, this distinction is often blurred. Consider the sentence, "She [[pronounce:might:en]] be at the library; I saw her heading that way earlier." This conveys that her presence at the library is a possibility, but not a certainty.

Here's a vocabulary block to help solidify understanding:

Word Phonetic Spelling Translation (Concept)
May /meɪ/ Expressing possibility or permission
Might /maɪt/ Expressing possibility (often slightly less certain)
Possibility /ˈpɒsəˈbɪləti/ The state of being possible
Likely /ˈlaɪkli/ Having a high probability of occurring
Unlikely /ʌnˈlaɪkli/ Not likely to occur; improbable

When forming sentences with "may" and "might," the structure is straightforward. You use the modal verb directly after the subject, followed by the base form of the main verb. Crucially, "may" and "might" are not followed by "to" when they are the main modal verb in the sentence.

Let's look at some examples illustrating this grammatical structure:

The negative forms are also regular. You simply add "not" after the modal verb. For "may," the contracted form is "mayn't," though this is less common than "might not." For "might," the contracted form is "mightn't."

Affirmative Negative (Full) Negative (Contracted)
May go May not go Mayn't go (rare)
Might go Might not go Mightn't go

In questions, "may" and "might" are placed before the subject, similar to other modal verbs. However, questions using "may" in this way are quite formal and less frequent in modern spoken English. "Might" is more commonly used in polite inquiries.

The primary function of "may" and "might" in this context is to communicate a degree of uncertainty. Native speakers use these modals to avoid sounding overly assertive when they don't have complete information. It's a way of hedging their statements, making them more open to revision if new facts emerge.

Consider scenarios where you're discussing future plans or present situations where you lack full knowledge. For instance, if you're trying to guess a friend's whereabouts, you might say, "She [[pronounce:may:en]] be at the gym, or she [[pronounce:might:en]] have gone to the grocery store." Both options are presented as possibilities.

A crucial distinction to remember is that "may" and "might" are not used to express past possibilities with the same directness as in the present or future. For past possibilities, we typically use "could have" or "might have" (which is identical in form to the present possibility but understood from context). For example, "He [[pronounce:may:en]] have missed the bus" refers to a past event.

Cultural Note: In many English-speaking cultures, directly stating something as fact when you are not 100% certain can sometimes be perceived as overconfident or even disingenuous. Using "may" and "might" is a subtle way to convey humility and acknowledge the limits of one's knowledge, making communication smoother and more polite. It shows consideration for the listener's potential knowledge of new information.

Let's examine a short dialogue to see "may" and "might" in action:

Person A: "Did you see John this morning?" Person B: "No, I didn't. He [[pronounce:may:en]] have already left for work. Or, he [[pronounce:might:en]] still be at home, trying to finish an important email." Person A: "Ah, okay. Well, I [[pronounce:may:en]] try calling him later then."

Knowledge Check

Register to answer these questions interactively and have your exam graded.

  1. Which modal verb is often used to express a slightly lower probability of possibility?
    • A) Shall
    • B) Will
    • C) Might
    • D) Must
  2. In the sentence 'It ___ rain tomorrow,' which modal best expresses a possibility?
    • A) May
    • B) Must
    • C) Ought
    • D) Should
  3. What is the base form of the verb after 'may' or 'might' in a modal construction?
    • A) Gerund
    • B) Past participle
    • C) Infinitive with 'to'
    • D) Base form (infinitive without 'to')
  4. Which sentence correctly uses 'may' or 'might' to express possibility?
    • A) They may to be tired.
    • B) They might be tired.
    • C) They mays be tired.
    • D) They mights be tired.
  5. The negative form of 'might' is typically:
    • A) Mightn't
    • B) Mayn't
    • C) Might not
    • D) Both A and C
  6. When asking for permission formally, which modal is sometimes used?
    • A) Might
    • B) Must
    • C) May
    • D) Could
  7. Which of the following best describes the function of 'may' and 'might' when expressing possibility?
    • A) To state a definite fact
    • B) To express a strong command
    • C) To indicate uncertainty or a potential occurrence
    • D) To ask for information directly
  8. For past possibilities, which construction is commonly used?
    • A) May have + past participle
    • B) Might + past participle
    • C) Could have + past participle
    • D) Must have + past participle