王秀凤
一、until的用法
until与延续性动词连用时,动词用肯定形式,表示“直到……为止”,指主句的动作一直持续到until后的动作发生为止;与短暂性动词连用时,动词须用否定形式,意为“直到……才……”,指主句的动作一直到until后的动作发生时才发生。
1. 作介词,表示“直到……为止”。
I waited until 3:00, but he didn't come. 我一直等到3点,但他没来。
—Jack didn't go to bed ___ 12 o'clock last night.
—That's why he was late for school this morning.
A. until B. for C. to D. at
【解析】 A。句意:——杰克昨晚直到十二点才睡。——这就是他今早迟到的原因。not... until为固定搭配,意为“直到……才”。
2. 作连词,表示“直到……为止;在……以前;不到……(不)”。
① 用于肯定句中。
Please wait here until I come. 请在这里等到我来。
② 用于否定句中。
The noise of the street didn't stop until midnight. 街上的喧闹声一直到半夜才停止。
She didn't leave the school ___ she worked out this problem.
A. as long as B. until C. since D. while
【解析】 B。句意“直到解决了这个问题她才离开学校”。as long as只要(引导条件状语从句);until直到(引导时间状语从句);since自从(引导时间状语从句);while当……时候(引导时间状语从句)。根据句意,故选B。
We didn't cut the cake ___ Amy made a wish.
A. because B. until C. if
【解析】 B。because因为,until直到,if如果。根据句意“直到艾米许了个愿,我们才切蛋糕”可知,其它选项语意不通。
Helen was very rude to me. I refuse to speak to her again ___ she says sorry.
A. until B. if
C. because D. since
【解析】 A。句意:海伦对我粗鲁,我拒绝跟她再次说话,直到她向我道歉为止。until意为“直到……才”,符合句意。if意为“如果”;because意为“因为”;since意为“自从:既然”。故选A。
二、so that的用法
1. so that意为“目的是/为的是/以便”,引导目的状语从句,从句中通常含情态动词can, may, might等。
He got up very early so that he could catch the early bus. 他起床很早,为的是能赶上早班公共汽车。
We should take care of the earth ___ we can make a better world to live in.
A. so that B. until C. even if D. while
【解析】 A。句意:我们应该关爱地球,为了我们能创造一个更美好的世界。so that 为了; until 直到;even if 即使;while 当……时候;根据We should take care of the earth 和we can make a better world to live in之间的关系是表示目的,故选A。
2. so that引导目的状语从句,当主句主语与从句主语一致时,可用“so as to / in order to+动词原形”转化为简单句。
He got up early so that he could catch the early bus. 為了赶早班公交车他起床很早。
=He got up early in order to / so as to catch the early bus.
3. so that还可以与in order that互换。
He worked day and night so that / in order that he could succeed. 他夜以继日地工作为的是成功。
【拓展】
so... that... 表示“如此……以至于……”,引导结果状语从句。
The boy is so young that he can't go to school. 这个男孩太小还不能去上学。
三、although的用法
although意为“尽管,虽然”,相当于though,用来引导让步状语从句。句中用了although或though,就不可再用but。若要强调前后两部分的对比意义,可在主句前加yet或still。
Although / Though he has a lot of money, yet / still he is unhappy. 他虽然有很多钱,但并不幸福。
1. although较正式,引导的从句放在主句的前后均可。
Henry often helps me with my math although he is quite busy. 尽管亨利很忙,但是他经常帮助我学习数学。
2. although不能与but连用,但可与yet, still连用。
虽然他老了,但是他工作努力。
Although he was old, but he worked hard.(×)
Although he was old, he worked hard.(√)
Although he was old, yet he worked hard.(√)
A recent survey shows that 44 percent of Americans want to use self-driving cars, ___ 34 percent believe that they will make the roads more dangerous.
A. although B. because C. if
【解析】 A。句意:最近的一项调查显示,44%的美国人希望使用自动驾驶的汽车,尽管34%的人认为这会使道路变得更危险。although虽然,because因为,if如果。根据前后句意可知,这里表示让步,即“虽然,尽管”,故选A。
【趁热打铁】
一、单项选择。
1. We will keep trying ___ our dreams come true.
A. as B. when C. while D. until
2. I really enjoyed your speech, ___ there were some parts I didn't quite understand.
A. because B. unless
C. although D. after
3. The teacher asked me to read aloud ___ all the students could hear me.
A. so that B. for
C. because D. in order to
4. Eric arrived on time, ___ it was the rush hour.
A. though B. because
C. while D. unless
5. ___ we didn't win the basketball game, we were satisfied with our hard work.
A. If B. Though
C. Since D. Because
二、根據汉语意思完成下列句子,每空词数不限。
1. 尽管它尝起来很美味,你也不应该吃得太多。
_______ delicious, you should not eat too much.
2. 为了让我有更多的时间学习,我父母不让我看电视。
My parents don't let me watch TV _______ I can have more time to study.
3. 我昨晚在网上看完电影《小时代Ⅱ》才睡觉。
I ___ go to bed ___ I finished watching the movie Tiny Times II on the Internet last night.
4. 虽然史密斯从未去过我们的国家,但他对中国很了解。
Mr. Smith knows a lot about China ___ he has never been to our country.
5. 我反复浏览我的考试卷,以便我不会出现错误。
I looked through my test paper again and again ___ I wouldn't make any mistakes.