When to Use “Did You Know” Instead of “Do You Know
Why do we say “did you know” rather than “do you know”? — D.M., Pakistan Answer The phrase “did you know” is used when you are asking someone if they know a fact, and you already know that fact. For example, you might say “Did you know that the blue whale is the largest mammal?” where “the blue whale is the largest mammal”… Read More »