There was a period when i hated to go to school .这里的period 前面为什么用a ,还有为...
问题描述：
There was a period when i hated to go to school .这里的period 前面为什么用a ,还有为...
There was a period when i hated to go to school .这里的period 前面为什么用a ,还有为什么要用when ,请解释清楚,
答
period 这里意为一段时期,是可数名词,要用a period.
这句定语从句中,period 做先行词,表时间,用关系词when 来引导.