six months' trainning 还是 six months of training

小娇娇宝宝

到底应该是 six months of advanced training 还是 six months' advanced training?

rualantonio

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理论上二者即可，前者是用所有格表示领属关系，后者是用介词来表达。

Mandolin

以下表达都可以：

1. soldiers must first pass a six-month advanced training
2. soldiers must first pass a six months' advanced training
( o8 A' R* S' X6 k3. soldiers must first pass six months of advanced training

渔夫和妖怪

six months of advanced training,，中心词是six months，强调时间（长）；
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six months' advanced training，中心词是training，强调训练这一阶段（经过这一阶段后方可……）。
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以上属个人理解。