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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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