轮流做某事Take turns doing sth，或者是it's one's turn to do sth，轮流做某事,表示的是已发生并将继续发生的情形。
Take例句
1.The accident happened as the jet was about to take off.
事故是在喷气式飞机正要起飞时发生的。
2.You can watch aircraft take off or land at close quarters.
你可以近距离地观看飞机起飞或降落。
3.Three planes were standing on the tarmac, waiting to take off.
三架飞机停在跑道上，等候起飞。
4.Batman must take off his mask.
蝙蝠侠必须拿掉他的面具。
5.Now we can take off the caps.
现在我们可以拿掉帽子了。
6.Come in and take off your shoes.
进来，把你的鞋子脱掉。
7.You can take off your coats.
你可以把你的外套脱下来。
8.Let us take off our caps together.
让我们一起脱下帽子。