We must take our turn at work这句话中的 our turn 要加 s turns

We must take our turn at work这句话中的 our turn 要加 s turns 这We must take our turn at work这句话中的 our turn 要加 s turns 的We must take our turn at work这句话中的 our turn 要加 s turns take turns to do sth 这个句型里“turn”为什么要加S啊? take turns doing sth 这个句型里“turn”为什么要加S啊 tree turns green 为什么turn要加s take turn还是take turns? We must __D___ our turn a long time to pay for what we buy.A 是take turn还是take turns? take turns 和 take turn 的区别 in one's turn 和in turn和 take turns的区别 百度知道 when ice melts,it turns into water.为什么turn 要加s