My friend will buy a lottery ticket. He may have the winning ticket. My friend bought a lottery ticket. He may have had the winning ticket. i do not know, but it is possible. Do you think Tom may complete the report? Do you think Tom may have completed the report? She has gone without us. She may have waited. ( have – Verb - ) I have a book. Do you have a car? ( have + past participle ) – I have had lunch already. Have you had a bath?