“Had I known you were coming, I __________ at home.

•একটি Conditional sentence-এ দু’টি clause থাকে: নির্ভরশীল/subordinate clause-টি শর্ত বোঝায় এবং প্রধান/principal clause-টি প্রেক্ষাপট বোঝায়। এদেরকে ‘if clauses’-ও বলা হয়।

• There are four types of Conditionals:
1. The Zero Conditionals
2. The First Conditionals
3. The Second Conditionals and
4. The Third Conditionals
 
- Conditional sentence এ Had + Sub + V3 + Extension এভাবে কোন sentence শুরু হলে সেটি Perfect conditional / 3rd conditional হয়।
- If clause- এ যদি (had + V3) হয়, তবে পরবর্তী clause a would/could/might + have + V3 + extension ব্যবহৃত হয়।
- অতএব, নিয়মানুযায়ী সঠিক উত্তর হবে would have stayed.
 - Complete: Had I known you were coming, I would have stayed at home.