英語高二學(xué)科知識點(diǎn):since從句的用法

2017-01-31 11:27:39 來源:精品學(xué)習(xí)網(wǎng)

   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)

分享“英語高二學(xué)科知識點(diǎn):since從句的用法”到:

58.4K

網(wǎng)站地圖

關(guān)注高考招生官微
獲取更多招生信息
高校招生微信
亚洲中国久久精品无码,国产大屁股视频免费区,一区二区三区国产亚洲综合,国产AV无码专区毛片
亚洲成在线a免费 | 亚洲一区二区三区在线看 | 亚洲中文在线精品国产 | 亚洲色偷偷偷网站色偷一区 | 亚洲欧美日韩在线观看 | 亚洲欧美人女户中文字幕 |