Since从句的用法
1. Since从句为非延续性动词的过去时或现在完成时,时间的起点应该从从句动作完成时刻算起。
例如:
Things have changed a lot since I wrote to you last time.
自我上次给你写信之后,情况已发生了很大的变化。
She has lived with us since she has come here.
自从她来到这里,就一直和我们住在一起。
2. Since从句为延续性动词的一般过去时,表示动作或状态的结束。其含义与动词的词义恰好相反,具有否定意味。
例如:
All has changed since he was at home.
自从他离开家以后,这里的一切都变了。
I havent written to her since she lived in London.
自从离开伦敦以来,我还没有给她写过信。
He has never been to see me since I was ill.
自从我病愈以来,他一直没有来看我。
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