until的用法詳解

　　下面學(xué)習(xí)啦小編為大家?guī)?lái)Until的用法詳解：

　　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(yǔ)或非正式文體中則兩者都可用.從其后所接成分來(lái)看,till多與名詞或較短的從句連用,而較長(zhǎng)較復(fù)雜的成分多用 until,位于句首時(shí)也多用 until.兩者在用法上應(yīng)注意以下幾點(diǎn)：

　　1.引導(dǎo)時(shí)間狀語(yǔ)從句時(shí),其謂語(yǔ)要用現(xiàn)在時(shí)表示將來(lái)意義.如：

　　I won’t leave until he comes back tomorrow.我要等他明天回來(lái)后再走.

　　Continue in this direction until you see a sign.一直朝著這個(gè)方向走就看見(jiàn)指示牌了.

　　2.相關(guān)主句謂語(yǔ)必須是持續(xù)性動(dòng)詞,若是終止性動(dòng)詞,則應(yīng)為否定式(因?yàn)榻K上性動(dòng)詞一旦被否定就成為狀態(tài),便可持續(xù)).如：

　　He waited until she was about to leave.他等著一直到她準(zhǔn)備離開(kāi).

　　She didn’t marry until she was over fifty.她直到50多歲才結(jié)婚.

　　3.有時(shí)其后可跟副詞或介詞短語(yǔ)等.如：

　　He has been ill until recently.他最近一直生病.

　　Until when are you going to stay here?你在這兒要待到什么時(shí)候?

　　We didn’t eat till past midnight.直到午夜過(guò)后我們才吃飯.

　　She won’t go home until after the exam.她要考完試之后再回家.

　　如果語(yǔ)境的需要,有時(shí)甚至可以接帶有“引導(dǎo)詞”的從句.如：

　　Don’t leave until after I’ve spoken to you.我和你說(shuō)完后再離開(kāi).

　　4.用于 not…until [till]…結(jié)構(gòu)

　　(1) 可用于It is (was) not until [till]…that…這樣的強(qiáng)調(diào)句型.如：

　　It was not until I met you that I knew real happiness.直到我遇到你以后,我才真正體會(huì)到幸福.

　　It was not until she took off her dark glasses that I realized she was a famous film star.直到她取下墨鏡,我才意識(shí)到她是一位著名影星.

　　(2) 若主句動(dòng)詞為終止性動(dòng)詞,其意為“直到……才……”;若主句為持續(xù)性動(dòng)詞,其意為“不到……就……”.比較：

　　They didn’t find her till the next day.他們直到第二天才找到她.

　　He didn’t wait until I returned.他沒(méi)等到我回來(lái)(沒(méi)等我回來(lái)他就走了).

　　有時(shí) until 或 till 可以換成 before.如：

　　Until [Before] you told me,I had no idea of it.在你告訴我之前,我對(duì)此一無(wú)所知.(即直到你告訴我,我才知道)

　　(3) 若將not until [till]置于句首,其后的主句要用倒裝語(yǔ)序.如：

　　Not until much later did she learn who her real father was.她很久以后才知道她真正的父親是誰(shuí).

　　Not until he received her letter did he fully understand the depth of her feelings.他直到收到她的信之后才充分理解她的感情有多深.

　　until雙語(yǔ)例句：

　　1、From September until December, Congress remained in session.

　　從9月到12月，國(guó)會(huì)一直都在開(kāi)會(huì)。

　　2、The aid will not be disbursed until next year.

　　援助款到明年才會(huì)下?lián)堋?/p>

　　3、Sarah was nine years old and until that moment she had been locked in a world of her own.

　　薩拉當(dāng)時(shí)9歲，之前她一直封閉在自己的世界里。

　　4、Our pilot reduced height until we hugged the ground.

　　飛行員降低了高度，最后我們緊貼著地面飛行。

　　5、The prospect of having to pay a graduate tax until retirement would kill the students 'enthusiasm stone dead.

　　想到今后一直到退休為止都要繳畢業(yè)稅，學(xué)生們的積極性會(huì)被徹底打消。