Example of a mid-air sentence They were standing in front of an airy, light tent that seemed like a silk sheet hung in midair over a table. Toby smiled and tossed another pillow to Rhyn, pleased when he seized it from midair and destroyed it in a flurry of white feathers. Mid-air means "in the middle of." The perfect sentence for this situation would be one that describes what happens at this point in time. You can use the word "when" in a sentence to show a moment in time, so "When Toby smiled, he knew something wonderful was about to happen." This tells us that something wonderful did happen - something wonderful happened to Toby when he smiled! You can also use the word "after" in a sentence to show a moment in time. So, you could say "After Toby smiled, he found himself sitting on top of a pillow fighting off four other boys." In this case, after Toby smiled, they fought over who got to be his friend first (something wonderful). Then they all sat on top of pillows and had fun fighting each other (also something wonderful).