Is it grammatically correct to use "heretofore" in the past perfect? ...the king's power, which had heretofore been absolute. The meaning of "heretofore" is "before now", but would it still work ...
Is this sentence correct? We had published the OpenCCU source code at the beginning of 2002. At first we had uploaded source code on Sourceforge and immediately began receiving thanks and wishlist ...
Where should we use "has/have been" and "had been"? What is the difference between them?
This sentence makes my head hurt a bit, and it doesn't seem right, but perhaps you guys could help me sort it out. "If I would've gone to Canada, I'd have to have had some kind of winter gear."
I wonder whether “ask” can be used as verb in past or present perfect tense. I used “I have asked something from somebody” in email, but this sentence sounds a little weird to me. So I want to check ...
Take for example: I met Raschel three years ago. He represented a small company of which he was also the proprietor. He came to show the presentation of his product plan. Many companies, ...
What is meant by "present perfect", "past perfect", and "future perfect" verbs? How can I identify them or know which is which?