Explanation: Had + Subject + Past Participle দ্বারা কোন Conditional sentence শুরু হলে এর অপর sentenceটি perfect conditional অর্থাৎ subject এরপর would have/could have/might have বসে এবং এর পরের verbটির past participle form হয়।
অতএব, Complete sentence: Had I been a millionaire, I would have established a hospital.
