顺便提一下, ever 并不是很多人以为的曾经, 真正的含义是任何时候, 所以这句话的翻译: 答：不一定。 for和since本质上是给出了一个段时间的时间状语，要求主句谓语必须能搭配段时间，不得是 瞬时动词。 至于要不要是完成时态，则更多取决于句意想表达什么。 例： she. It has been three years since i lived here，或者it is three years since i lived here，或者it has been three years since i have lived here，都表达了“我”三年前住这里，现在不住这里，虽然最后.
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Since 2010，这种情况指的是，2010年是一个过去的时间，现在可能是2016或2020年，我们之前就开始了，并且现在持续在做，举例： since 2015, we have been making all students. 常用的时间介词：for, since, from和ago用法及区别 1、for for用来表示某动作或情况持续了多长时间，既可以指过去，也可以指现在和将来。 i once studied the guitar for three years．我曾经学过3年吉他. 我们6年没见面了。 句型分析：这是现在完成时的一种特殊表现形式，其中 since后用一般过去时态，根据动词的特点，意思有二： 1 、 it.
Long since implies that a considerable amount of time has passed since the wind forgot, emphasizing the duration of the forgetfulness.
2）since + 时间点才是规范用法，所以 since i was ill 也是不规范用法——因为很难说 i was ill 是一个瞬间的时间点还是一种持续的状态。 其次，题主对于这句话的困惑可以用下面两个图来示意。 第一种：. 看看这个句子： it's been six years since we last saw each other. She had been worrying ever since the letter arrived. It suggests that the wind's forgetfulness is not recent.
