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高三英語語法:since從句的用法,不看后悔! 精選

2018-09-30 小霸總

博彩老头排列5预测 www.jjcokz.com.cn ??1. Since從句為非延續性動詞的過去時或現在完成時,時間的起點應該從從句動作完成時刻算起。

??例如:

??Things have changed a lot since I wrote to you last time.

??自我上次給你寫信之后,情況已發生了很大的變化。

??She has lived with us since she has come here.

??自從她來到這里,就一直和我們住在一起。

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??2. Since從句為延續性動詞的一般過去時,表示動作或狀態的結束。其含義與動詞的詞義恰好相反,具有否定意味。

??例如:

??All has changed since he was at home.

??自從他離開家以后,這里的一切都變了。

??I havent written to her since she lived in London.

??自從離開倫敦以來,我還沒有給她寫過信。

??He has never been to see me since I was ill.

??自從我病愈以來,他一直沒有來看我。

??Two years have passed since I last smoked.

??我戒煙已經兩年了。

??但如果since從句是延續性動詞的現在完成時,則表示動作由開始延續至說話的時候,具有肯定意味。

??例如:

??He has never been to see me since I have been ill.

??自從我生病以來,他一直沒有來看我。

??She has talked little since she has stayed at home.

??自從她呆在家里以后,就很少講話。

??Since we have owned a car,?we have gone camping every year.

??自從我們有了汽車后,年年都去野營。

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??3. 在現代英語中,since從句是延續性動詞的一般過去時,有時候也可以表示肯定意味。此時,多半用ever來加強since的語義。

??例如:

??She has known me ever since she was a child.

??她從小就認識我了。

??I have live here ever since I was born.

??我生下來就住在這里。

?

??4. it is+時間+since從句結構中,since從句是非延續性動詞的一般過去時,含有肯定意味。

??例如:

??It is three years since her husband left her.

??她丈夫離開她已經3年了。

??It is over sixty years since the Peoples Republic of China was established.

??中華人民共和國已經成立60多年了。

?

??5. it is+時間+since從句結構中,since從句是延續性動詞的一般過去時,含有否定的意味。

??例如:

??It is three years since she stayed here.

??她離開這里已經3年了。

??How long is it since you were a league member?

??你入團有多久了?

?

??6. it is+時間+since從句結構中,since從句是現在完成時或過去完成時,均含有否定意味。

??例如:

??It is five years since we have seen her.

??我們已經5年沒有見她了。

??It was years since I had seen her.

??在那之前,我已經有好久沒有見到她了。

??Its been a long time since Ive seen you.

??我已經很久沒有見到你了。

?

??另外,①根據英語慣用法,since從句不可以否定形式出現。

??例如:

??It is four years since I have smoked a cigarette. 我已經4年不抽煙了。

??不可說:It is four years since I havent smoked a cigarette.

??但由于下句中的since不作自從解,所以從句可以用否定形式。

??例如:

??I havent been out anywhere since I dont know how long.??也不知多久了,我哪兒也沒去過。

?

??②Since從句通常不與非延續性動詞的現在完成時的肯定式連用。

??例如:

??Her mother died when she was a child.

??她小時候母親就去世了。

??不可說:Her mother has died since she was a child.

?

??③Since前不可加表示時間的詞語,但可以與ago連用。

??例如:

??She has lived with us since her mother died three years ago.

??自從她母親3年前去世,她就一直和我們住在一起。

??不可說:She has lived with us three years since her mother died.

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??④在It was five years ago since his father died. 一句中的since用錯了,因為在含有ago的時間范疇里,已經有了從過去的一個時間點以來的時間,即已有了since的時間范疇,所以再用since是多余的。

??改為:

??It was five years ago that his father died.

??他父親5年前去世了。

??It is five years since his father died.

??他父親去世已經5年了。

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