还原：The last time this country hosted the Olympic Games was when.
分析：原句中的when是特殊疑问句中的疑问代词,不是引导状语从句.
再次还原：The last time (when) this country hosted the OG was when.
the last time 后面的的when是省掉了,这里才是状语从句.
与The moment i saw her i fell in love with her.一样
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