example：Next time is in your turn.下壹個回合就輪到妳了。
in turn 輪流，屬介詞短語。
example:We three will clean the classroom in turn.我們三個會輪流打掃教室。
take turns 輪流，屬動詞短語。相當於do sth. in turn
example:We will takes turns to clean the classroom.我們三個會輪流打掃教室。（與第二句是同義句，可相互轉換）