Formula, Structure, and Rules of Past Perfect Continuous Interrogative Tenses
Had + Subject + Been + Present Participle + Object + Time reference
- Had you been helping your friend for 5 years?
2. Had the girl been laughing for 5mint?
3. Had they been playing game for two hours?
4. Had she been waiting for her friend for two year?
5. Had i been using my laptop since 9th August 2016?