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until的用法

時間:2022-12-15 10:03:08 考試英語 我要投稿
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關于until的用法

  Until用法:表示“直到……為止”,兩者?蓳Q用,只是 until 比 till稍正式,所以在正式文體中,一般用 until,而在口語或非正式文體中則兩者都可用.從其后所接成分來看,till多與名詞或較短的從句連用,而較長較復雜的成分多用 until,位于句首時也多用 until.接下來就由小編帶來以下內容,希望對你有所幫助!

  連詞 conj. 直到…為止

  up to the time when

  · Ill wait until he arrives and then Ill leave.

  我要等他來以后再離開.

  · Go straight on untill you come to a large red building.

  一直往前,走到一幢高大的紅色建筑物為止.

  · Lets wait until the rain stops.

  咱們等雨停吧.

  · The teacher kept on asking the students questions until the bell rang.

  老師反復向學生提問,直到下課鈴響.

  連詞 conj. (在否定句中)在…之前

  in (in negative constructions) before

  · I shant do that until you come back.

  在你回來之前,我不會干那件事.

  · We wont come to any decision until we have had a chance to discuss the problem thoroughly.

  我們有機會充分討論這個問題再決定下來.

  · Until you told me I had no idea of it.

  在你告訴我之前,我對此一無所知.

  介詞 prep. 直到…為止

  up to a certain time

  · It was only a week until Christmas.

  離圣誕節(jié)只有一個星期了.

  · She will stay until Saturday.

  她要一直呆到星期六.

  介詞 prep. 在…之前;不到…(不)

  before

  · I cant come until tomorrow.

  我得明天才能來.

  · Not until noon did it stop raining.

  直到中午雨才停止.

  · Until then, I knew nothing at all about it.

  在那以前,我對此一無所知.

  · Until her fathers death, she had always lived in London.

  在她父親去世之前,她一直住在倫敦.

    not until用法

  until可用作介詞或連詞,意為“到……時候為止”、“到……時候才”或“在……時候以前不”.什么情況下表達什么意思,關鍵要看(主)句中的謂語動詞是終止性動詞還是延續(xù)性動詞.

  1.如果(主)句中的謂語動詞是終止性動詞,應采用“...not ...until ...”結構,意為“……到……時候才……”.例如:

  You mustn’t eat anything until you see the doctor.

  看過醫(yī)生之后,你才能吃東西.

  Don’t get off the bus until it has stopped.

  車停穩(wěn)了以后再下車.

  2.如果(主)句中的謂語動詞是延續(xù)性動詞,那么謂語動詞用肯定式或否定式,它們所表達的意思有所不同.

  1) 如果謂語動詞為肯定式,則until譯為“到……時候為止”.例如:

  I watched TV until she came back.

  我看電視一直看到她回來.

  2) 如果謂語動詞為否定式,則until應譯為“到……時候才”,即“在……以前不”.例如:

  I did not watch TV until she came back.(= I began to watch TV when/after she came back.)

  直到她回來我才開始看電視.

  3.用終止性動詞作謂語時,until既可以和not連用,又可以和never,nobody,nothing,few,little,seldom,hardly等含否定意義的詞連用.例如:

  I had not seen him until 1990.(= I had never seen him until 1990.)

  1990年以前我從未見過他.

  Don’t put off until tomorrow what you can do today.(= Never put off what you can do today till tomorrow.)

  今日事,今日畢.

  4.連詞until引導的從句中謂語動詞的時態(tài).

  1) 主句的謂語動詞為一般現(xiàn)在時或一般將來時時,until從句中的謂語動詞為現(xiàn)在完成時,用來強調從句謂語動詞表示的動作發(fā)生在主句謂語動詞表示的動作之前.試比較:

  I won’t go to bed until I have finished my homework.

  我要完成作業(yè)才睡覺.

  2) 主句中的謂語動詞為一般過去時時,從句中的謂語動詞為過去完成時,用來強調從句謂語動詞的動作發(fā)生在主句謂語動詞表示的動作之前.試比較:

  Li Lei didn’t come until the film had begun.

  直到電影開演,李雷才來.

  〔特別提醒〕 till和until的意思基本相同,用法也基本一樣,但until語氣較重,多用于較正式的文體里.till多用于英式英語,until多用于美式英語; till不能用在句首,也不能用在not開頭的短語或從句里,而until可以.例如:

  Until he came home,we knew the news.

  在他到家之前,我們不知道這消息.

  Not until nine o’clock yesterday evening did we finish the work.

  直到昨晚九點,我們才完成這項工作.

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