Formula, Structure, and Rules of Past Perfect Continuous Interrogative Tenses
Formula:
Had + Subject + Been + Present Participle + Object + Time reference
Example:
- Had you been helping your friend for 5 years?
| Subject | Verb | Object |
| He | Helping | Friend |
2. Had the girl been laughing for 5mint?
| Subject | Verb | Object |
| The girl | Laughing | Mins |
3. Had they been playing game for two hours?
| Subject | Verb | Object |
| They | Playing | Game |
4. Had she been waiting for her friend for two year?
| Subject | Verb | Object |
| She | Waiting | Friends |
5. Had i been using my laptop since 9th August 2016?
| Subject | Verb | Object |
| I | Using | Laptop |
