英語高二學(xué)科知識點(diǎn):since從句的用法
英語是現(xiàn)在世界上用的最多的一門語言,許多國家都在學(xué)英語和用英語,所以,學(xué)好了英語,出門就不怕溝通不方便了。育路小編為大家推薦了高二英語學(xué)科知識點(diǎn),請大家仔細(xì)閱讀,希望你喜歡。
1. Since從句為非延續(xù)性動詞的過去時(shí)或現(xiàn)在完成時(shí),時(shí)間的起點(diǎn)應(yīng)該從從句動作完成時(shí)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(fā)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。
2. Since從句為延續(xù)性動詞的一般過去時(shí),表示動作或狀態(tài)的結(jié)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 haven’t 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(jīng)兩年了。
但如果since從句是延續(xù)性動詞的現(xiàn)在完成時(shí),則表示動作由開始延續(xù)至說話的時(shí)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。
3. 在現(xiàn)代英語中,since從句是延續(xù)性動詞的一般過去時(shí),有時(shí)候也可以表示肯定意味。此時(shí),多半用ever來加強(qiáng)since的語義。
例如:
She has known me ever since she was a child.
她從小就認(rèn)識我了。
I have live here ever since I was born.
我生下來就住在這里。
4. 在it is+時(shí)間+since從句結(jié)構(gòu)中,since從句是非延續(xù)性動詞的一般過去時(shí),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(jīng)3年了。
It is over sixty years since the People’s Republic of China was established.
中華人民共和國已經(jīng)成立60多年了。
5. 在it is+時(shí)間+since從句結(jié)構(gòu)中,since從句是延續(xù)性動詞的一般過去時(shí),含有否定的意味。
例如:
It is three years since she stayed here.
她離開這里已經(jīng)3年了。
How long is it since you were a league member?
你退團(tuán)有多久了?
6. 在it is+時(shí)間+since從句結(jié)構(gòu)中,since從句是現(xiàn)在完成時(shí)或過去完成時(shí),均含有否定意味。
例如:
It is five years since we have seen her.
我們已經(jīng)5年沒有見她了。
It was years since I had seen her.
在那之前,我已經(jīng)有好久沒有見到她了。
It’s been a long time since I’ve seen you.
我已經(jīng)很久沒有見到你了。
另外,①根據(jù)英語慣用法,since從句不可以否定形式出現(xiàn)。
例如:
It is four years since I have smoked a cigarette. 我已經(jīng)4年不抽煙了。
不可說:It is four years since I haven’t 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 haven’t been out anywhere since I don’t know how long.
也不知多久了,我哪兒也沒去過。
、赟ince從句通常不與非延續(xù)性動詞的現(xiàn)在完成時(shí)的肯定式連用。
例如:
Her mother died when she was a child.
她小時(shí)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(shí)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.
、茉贗t was five years ago since his father died. 一句中的since用錯了,因?yàn)樵诤衋go的時(shí)間范疇里,已經(jīng)有了從過去的一個時(shí)間點(diǎn)以來的時(shí)間,即已有了since的時(shí)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(jīng)5年了。
育路小編為大家提供的高二英語學(xué)科知識點(diǎn),大家仔細(xì)閱讀了嗎?最后祝同學(xué)們學(xué)習(xí)進(jìn)步。
(責(zé)任編輯:彭海芝)
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