- flap
- 01. The flag was [flapping] in the wind.02. The bedsheets [flapped] on the clothesline.03. The bat [flapped] its wings suddenly, and disappeared into the trees.04. The little boy was running around the room, [flapping] his arms, and pretending he was a bird.05. We tied back the [flaps] of the tent to let some morning sunlight in.06. The pilot raised the [flaps] on the wings of the aircraft in order to reduce speed as they came down to land.07. The 'rr' sound in the Spanish language is made by [flapping] the tongue against the roof of the mouth.08. An injured bird was [flapping] around on the ground.09. We raised the [flaps] over the windows in the tent to let some fresh air in.10. The accident victim had a large [flap] of skin hanging from his forehead, and seemed to be unconscious.11. The hummingbird can [flap] its wings 70 times every second.12. Birds don't fly by [flapping] their wings up and down; the motion is more forward and backward, like a figure eight on its side.13. Elephants perform greeting ceremonies when a member of the group returns after a long time away; the welcoming animals spin around, [flap] their ears, and trumpet.14. While penguins cannot fly, they do [flap] their wings under water to aid in swimming.15. A dragonfly [flaps] its wings 20 to 40 times a second, bees and houseflies 200 times, some mosquitoes 600 times, and a tiny gnat 1,000 times.
Grammatical examples in English. 2013.