Use of May/Might have : Subject+may / might + past participle(V3)+Object చేసి ఉండవచ్చు, రాసి ఉండవచ్చు, వెళ్ళి ఉండవచ్చు,చూసి ఉండవచ్చు. ఇలాంటి మాటలను గూర్చి చెప్పవలసినపుడు మనము ఈ 'may/might have ' ఉపయోగిస్తాము. I. The structure  may / might + perfect infinitive  is used to talk about the possibility that something happened in the past.  It could also be used to say that something was true in the past. Examples: 1. Lavanya may have missed the train.(= there is possibility that lavanya missed the train.) 2. 'Lavanya hasn’t arrived yet.’ ‘She  may have missed  the train.’  (= It is possible that she missed the train.  ఆమె రైలు ఎక్కలేదనుకుంట) 3. ‘What was that noise?’ ‘It  might have been  an generator.’(=అది జనరేటర్ శబ్దం అయ్యుండవచ్చు.) II. The structure  might + past participle(V3)  is also used to talk about past events or situations that were possible but did not happen. Examples : 1.You were stupid to fight with them. They  might have killed  you. (