To search for information in a book or online, look up, AI📢, /ey-ay/, Past perfect continuous, action continuing before another past event, Past perfect, completed action before another past event, Past perfect continuous form, had been plus verb-ing, Past perfect form, had plus past participle, Which tense emphasizes duration, past perfect continuous, Which tense emphasizes completion, past perfect, Example of past perfect continuous, She had been studying for hours., Example of past perfect, She had finished her homework., Common signal for past perfect continuous, for or since, Common use of past perfect, sequence of earlier past actions, *go out of* a situation❌, *get over a* situation✅, to be good *in* something❌, to be good *at* something✅, paziente / patient, patient 📢 /pey-shuhnt/, a culture of work hard❌, a culture of working hard✅, asiatico / asiatique, Asian 📢 /ey-zhuhn/, a colleague of me❌, a colleague of mine✅, cinquantadue / cinquante-deux, fifty-two

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