A collegue has written the following sentence, but I think it is grammatically incorrect. “I want you to be aware of a unique event which I will be performing in.” I thought you aren’t supposed to end a sentence with a preposition. Or has it become so common that the rules have changed?
Rules about ending a sentence with a preposition are relaxing, probably because more and more people are doing it. However, to be perfectly correct, your colleague should say, “a unique event…
