时间状语部分由"it's been"开始,表示时间的过去,这是一个缩写形式,完整的形式是 "it has been", 它表示“过了多长时间”。
完成时部分由“three years”组成,“since”是连词, 意思是“自从”。
例如:
It's been three years since we last met.
It has been five days since I last saw her.
这个句型非常常见,可以用来表示距离某个事件过去了多长时间,例如:
It's been a year since I graduated. (距我毕业已经一年了)
It's been two months since I moved to this city. (距我搬到这个城市已经两个月了)
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最佳回答 2024-07-24