这两个词组含义都是：轮流、依次；用法如下：
1. take turns doing sth;
take turns+ at/in/on) doing something,也可以接to do something。如：
The two young men took turns dancing with the pretty girl.
The two young men took turns at/in/on dancing with the pretty girl.
The two young men took turns to dance with the pretty girl.
两个年轻男子轮流地和那个漂亮女孩跳舞。
2. take turns又作take it in turns；含义和用法几乎完全相同。
They took turns consoling the weeping girl.
They took turns at/in/on consoling the weeping girl.
They took turns to console the weeping girl.
They took it in turns consoling the weeping girl.
They took it in turns at/in/on consoling the weeping girl.
They took it in turns to console the weeping girl.
他们轮流地安慰那个正在哭泣的女孩。
