While Can’t Have (Been) is used to refer to an incident in the near past, Couldn’t Have (Been) is used for an event that happened way back in the past.
If you’re writing formal dialogue or in a formal setting, use “It’s I”. However, it’s more appropriate to use “It’s me.” in your everyday communications.
A lot of people use “If I was” instead of “If I were” when they use a subjunctive mood in a hypothetical situation.
Common Errors in English Emails: Being prevalent in our everyday life, filler words tend to rub off on our writing more often than not. We must take extra care to edit our draft to make sure it sounds professional.
Common Errors in English Usage: What’s favorite email sign-off? How do you deal with your default email signature while sending emails from your smartphones?
Common Errors in English Language: If you’re wondering if you should use “one less thing” or “one thing less”, rest assured both are correct. However, “one less thing” is more common than “one thing less”.