三选一用英语怎么表达

Then they were randomly assigned to three conditions, in which they either do A, do B or do C?这样的表达应该不对，either or应该是二选一，该怎么改呢，谢谢

如果让我选择最佳答案的话，我认为下面“知凡乐”的最好。
大家讨论的很热烈，多数人认为either是二者择一，所以either do A, do B or do C不对。其实三个以上择一直接用any就行，不过说法需要调整一下：

in which they could do any of them, A, B or C

顺便指出，从句的时态有问题，主从的时态一定要相互呼应，根据语势应该讲could do

either or 不是...就是...，表示两者中选其一。 去掉either就可以了。原句中do应该改为did

either or已经足以表明句子的意思，没有什么错误。不必过分拘泥。

我觉得还是不合适用either,or 你这话让我理解成,要么选择A,B,要么C; 与你想要表达的不一致. 可以这样改吧: Then they were randomly assigned to three conditions,in which they can choose one.

我认为应将either去掉，加one of the Then they were randomly assigned to one of the three conditions, in which they do A, do B or do C. 另外do似乎应改为did,因为谓语动词是过去。

三选一 choose one from three 没有次数限制 there is no limit of the number 或者 there is no limite of times 限制为十次 limited to ten times 或者 limited tenth 如果是你问的是没有次数限制，限制为十次 not the number of restrictions, limited to ten times 或者是 there have no limit of times，if have ，is at least tenth

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