• Third conditional এর নিয়মানুযায়ী - - অনেকসময় conditional-এ subordinate conjunction if এর পরিবর্তে sentence এর শুরুতে Had ব্যবহার করা যায় এবং এর পর verb এর past participle form বসে। - Conditional sentence- এ Had + Sub + V3 + Ext. এভাবে কোন Sentence শুরু হলে সেটিও Perfect conditional/ 3rd conditional হয়। তাই পরবর্তী clause এ would/could/might + have + V3 + extension ব্যবহৃত হয়।
Example: If I had studied harder, I would have passed the exam.
Complete sentence: If I had studied harder, I would have cleared the exam.
Source: Advanced Learner's English Grammar & Composition by Chowdhury & Hossain.