did you know means "did you know at one point or another (but may or may not know anymore or don't remember)". "Have you known that" is strange. Did you know ... you've lost about 1% of your body's water by the time you feel thirsty? Lighter Did you know; the lighter was invented long back before the matchbox and matchsticks are invented. Problem It's more likely that you'll want to ask do you know. Below are some common questions people might ask: Did you know I used to be a marathon runner? jonas, teen, shot. Did you know, Kangaroos cannot walk backwards! you also have the largest possible amount of money in coins without being able to make change for a dollar. Once you've asked the question, they know! Read Who Would Have Known from the story Did You Know? by lilyofthefield with 187 reads. * Do/Did you have any idea what time it was? "Had you known that" is used often, but almost exclusively as a statement. The choice of articles is subject to a set of criteria that are set out on this page.

If you have three quarters, four dimes, and four pennies you have $1.19. – Dodgie Dec 1 '13 at 0:45 Recycling one glass jar saves enough energy to operate a …

It’s used quite a lot by some teachers but it usually comes from somebody who wants bore your arse off telling you things you don’t need to know, don’t want o know and which are less interesting than the sex lives of Venusian bacteria.

It is not a general trivia section. Leonardo Da Vinci invented scissors. Potato Did you know, potato, the delicious and favorite veggie of children is the staple food in many countries and is the most cultivated vegetable across the globe. Wikipedia:Did you know (DYK) is the project page for the "Did you know" section on the Main Page.The DYK section showcases new or expanded articles that are selected through an informal review process. You are basically saying, "I know this, and I want to know if you know this too." As usual, it all depends on the rest of the question - for example: A) Did you know what time it was? do you know means "do you currently know".

Although phrased as the start of a question, it is actually an introduction from somebody who wants to impart information. * Were you aware of how late it had become?

Did you know ... you have chemoreceptors or taste buds on the inside of your cheek as well as on your tongue? "Did you know" can be used to ask about any kind of fact. * Are you aware of the time? "Had I known that she was vegan, I probably wouldn't have … Did you know ... it's possible for hot water to freeze more quickly than cold water? E.g. Did you know Jeff's sister just got married?