since从句的用法
下面是小编整理的一些关于介词since从句的用法的总结, 希望能帮助大家更好地认识since从句,学好英语。
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:
学习啦在线学习网 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。
学习啦在线学习网 She has lived with us since she has come here.
学习啦在线学习网 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:
学习啦在线学习网 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 haven’t 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。
学习啦在线学习网 Two years have passed since I last smoked.
我戒烟已经两年了。
学习啦在线学习网 但如果since从句是延续性动词的现在完成时,则表示动作由开始延续至说话的时候,具有肯定意味。
例如:
He has never been to see me since I have been ill.
自从我生病以来,他一直没有来看我。
She has talked little since she has stayed at home.
自从她呆在家里以后,就很少讲话。
学习啦在线学习网 Since we have owned a car, we have gone camping every year.
自从我们有了汽车后,年年都去野营。
3. 在现代英语中,since从句是延续性动词的一般过去时,有时候也可以表示肯定意味。此时,多半用ever来加强since的语义。
例如:
学习啦在线学习网 She has known me ever since she was a child.
学习啦在线学习网 她从小就认识我了。
学习啦在线学习网 I have live here ever since I was born.
我生下来就住在这里。