What is the past tense and participle of may?

The verb "may" is a modal verb, and modal verbs don't have a regular past tense or past participle.

Here's how you express the past tense and participle of "may":

* Past tense: You use might to express the past tense of "may."

* Example: "He *may* go to the store today." (present tense) vs. "He *might* have gone to the store yesterday." (past tense)

* Past participle: You use might to express the past participle of "may" as well.

* Example: "She *may* be able to help." (present tense) vs. "She *might* have been able to help." (past participle)

Let me know if you'd like more examples!