If I had known it was your birthday, I ____________ you a present.

Complete Sentence: If I had known it was your birthday, I would have bought you a present.
• প্রশ্নে উল্লিখিত Sentence টি একটি 3rd Conditional sentence এর উদাহরণ।

Structure: If + past perfect tense + would/could/might + have + past participle.

• Third conditional এর নিয়মানুযায়ী -
- Conditional-এ subordinate conjunction 'if' এর পর Past Perfect Tense হলে,
তার পরবর্তী Clause- এ would/could/might + have + Verb-এর Past Participle form হবে।

Example Sentence:
1. If I had studied harder, I would have passed the exam.
2. If they had left earlier, they wouldn't have missed the train.
3. If we had invested in that stock, we would have made a profit.
4. If she had known about the traffic, she wouldn't have been late.

- These are the examples of the Third Conditional.