北师大版高中英语模块7 Unit 20 New Frontiers 语言点(2)

Unit 20 New Frontiers 语言点（2）
学习目标
重点词汇
measure// by, cure, beyond, fade// drop off, locate, primitive, permit, allow,
declare, dedicated, condition
重点短语
single out, be about to, wrestle with..., turn to, get stuck, make a mess of,
not to mention
重点句型
倍数的表达法
表示并列的when
before小结
知识讲解
重点词汇
measure// by
【原句回放】It measured 100 feet long by over 100 feet high and weighed over 30 tonnes. 它长100英尺，高10英尺，重30吨。
【点拨1】measure vt. & vi. 量，测量，估量；量得……尺寸
n. 措施，量度，测量，尺寸
注意：此句中的measure和weigh都是不及物动词，表示某物量得的尺寸或重量，不能用被动语态。
常用搭配：
take measures to do sth. 采取措施做某事
make...to one’s own measure 按某人的尺寸做……
measure one’s words 斟词酌句
The boat measures twenty feet long.
这船长二十英尺。
A car’s speed is measured in kilometers.
车速以千米来测量。
We must take measures to reduce crime in the area.
我们必须采取措施减少这个地区的犯罪。
【点拨2】by prep. 乘以，除以，见方
The kitchen is 4 metres by 2 metres. 这个厨房4米长，2米宽。
Divide eight by two and you get four. 以二除八得四。
cure
【原句回放】During the Second World War, when Fleming’s discovery was first helping to cure people, the US Navy was looking for ways of improving the accuracy of their missiles. 二战期间，当弗莱明的发现首先用来为人们治病时，美国海军正在寻找能提高他们导弹精准度的方法。
【点拨】cure v. 治愈，治疗，改好；n. 治愈，疗法
常用搭配：cure sb. of 治好某人的（疾病）
a cure (=medicine) for... 治某病的药
The only way to cure backache is to rest.
治疗背痛的唯一办法是休息。
When I left the hospital I was completely cured.
出院时，我已经痊愈了。
There is still no cure for the common cold.
目前仍没有治愈感冒的良药。
The doctor cured his father of cancer.
那位医生治好了他父亲的癌症。
We must help to cure him of stealing.
我们必须帮助他改掉偷窃的恶习。
【拓展】辨析：treat，heal和cure
1. treat意为“治疗”，不一定治愈；
2. cure指“治愈”，且与treat搭配不同；
treat sb. for a disease治疗某人的（疾病）
cure sb. of sth. 治好某人的（疾病）
3. heal意为“治愈”，但多用于指治愈外伤（wound, injury, cut, burn etc.）。
beyond
【原句回放】What’s beyond that hill? 山那边有什么？
【点拨】beyond prep. 在（向）……的那一边，迟于，超出（某数量、水平或限度）
adv. 在更远处，在那边
Beyond the river stood a power station．
过了这条河就是一个发电站。
This work is beyond my grasp.
这件工作非我力所能及。
Your work is beyond all praise．
你的作品叫人赞扬不尽。
Men can travel to the moon and beyond.
人们能到月球或更远处去旅行。
At the meeting there were not beyond 20 people．
到会的人不超过二十。
【拓展】含beyond的短语
beyond control 控制不了 beyond reach 够不着
beyond description无法描述 beyond repair无法修理
beyond all praise赞叹不已
fade// drop off
【原句回放】After this, interest faded and the number of manned flights dropped off. 从那以后，兴趣逐渐消失，载人飞行的次数下降了。
【点拨1】fade vi. (声音等) 减弱下去, 褪色, 消失, 枯萎
vt. 使褪色
Cut flowers soon fade.
剪下来的花朵容易枯萎。
The memory of her sufferings in her childhood will never fade from her mind.
她永远不会忘却童年时代所受的痛苦。
The sun has faded the (colour of the) curtains.
阳光使窗帘褪色了。
The laughter faded (away), leaving me with a sense of unease.
笑声逐渐消失，让我深感不安。
【拓展】fade away 消失; 逐渐减弱; 褪色 fade out (声音、画面) 逐渐模糊、渐淡
【点拨2】drop off 下降
The number of graduates going into teaching has dropped off sharply.
去从事教育工作的毕业生数量近来急剧下降。
Interest in the game has dropped off recently.
人们对这项运动的兴趣近来有所减退。
【拓展】含drop的短语：
drop in/ by 顺便拜访 drop out 退出，退学 drop down 倒下，突然停止
locate
【原句回放】The telescope is so precise that over fifty new planets have been located beyond our solar system. 望远镜很精密，以致我们太阳系外的50多颗新行星的位置已被确定下来。
【点拨】locate vt. 找出/确定……的准确位置；把……设置在某处；使……坐落在（常用于被动语态）
常用搭配：be located in/ by/ near/ at/… 坐落在
We located the island on the map.
我们在地图上找出了那个岛的位置。
We’ll locate out new office in Beijing.
我们将把新办公室设置在北京。
Our school is located in the centre of the town.
我们学校位于镇中心。
【拓展】location n. 位置，场所
primitive
【原句回放】Other exciting developments include two other projects for exploring our solar system, looking for water on the moon and looking for primitive life on other planets. 其他令人兴奋的发展有开发太阳系的另两个项目，在月球上寻找水和在其他行星上寻找原始生命。
【点拨】primitive adj. 原始的，远古的，早期的；简单的，粗糙的
Primitive men made tools from sharp stones and animal bones.
原始人用尖石块和兽骨制造工具。
The natives of that region still live in primitive straw huts.
那个地区的居民依然住在古老的茅草屋里。
Small seashells were once used as a primitive kind of money.
小贝壳曾经被用作早期的钱币。
【拓展】primitively adv. 最初地；自学而成地
primitiveness n. 原始；原始性
permit
【原句回放】You are not permitted to work if you are on a student visa. 如果你持学生签证便不允许工作。
【点拨】permit v．许可，允许
n. 许可证，执照
常用搭配：
permit sb. to do sth. 允许某人做某事
permit doing sth. 允许做某事
permit of 许可，准许
I’ll come after the meeting if time permits. 如果时间许可的话，我开完会就来。
They don’t permit you to smoke. 他们不允许你抽烟。
We don’t permit smoking in the office. 办公室里不允许抽烟。
The facts permit of no other explanation. 事实不容许有其它的解释。
Have you got a driving permit? 你有没有取得驾照？
【拓展】permission n．允许，许可
allow
【原句回放】For example, we are all grateful for the handy microwave even that allows us to prepare meals in minutes. 例如，我们都感谢使我们在几分钟之内就能把饭做好的方便的微波炉。
【点拨】allow vt. 允许，许可，给予
常用搭配：
allow sb. in/ out 允许某人进来/ 出去
allow sb. to do sth. 允许某人做某事
allow doing sth. 允许做某事
allow sb. sth. 允许某人某事
allow for 考虑到； 顾及
We don’t allow eating in the classrooms. (我们)不允许在教室吃饭。
Her father would not allow her to eat sweets. 她父亲不允许她吃糖果。
He allows his son too much money. 他给他儿子的钱太多。
We must allow for the train being late. 我们必须想到火车会晚点的。
【拓展】辨析：allow与permit
1. 两者后面都能接名词或动名词作宾语，以不定式作宾补，通常可以互换。
2. 两者的细微区别是：allow有时指消极地不加反对，含有听任或默许之意，语气较轻；permit则多指上级、规则或法令等表示的准许，其语气较重。如：
The nurse allowed him to remain there, though it was not permitted.
护士让他留在那儿，而按规定那是不许可的。
3. 当句首用了形式主语it时，则要用permit，而不用allow。如：
It is not permitted to smoke in the reading-room. 阅览室内不准吸烟。
declare
【原句回放】NASA declared that a rock from Mars proved there had been life in the form of tiny bacteria. 美国宇航局声称从火星上得来的一块石头证明了火星上曾经有以细菌形式存在的生命。
【点拨】declare vt. 表明，声明，宣布，宣告，宣称
常见搭配：declare sb./sth. (to be) ... 声称某人/物是……
declare for/against 声明支持/ 反对
Australia declared its support for the agreement. 澳大利亚宣布支持这项协议。
The judge declared him the winner of the game. 裁判宣布他赢得了比赛。
Brady declared that he had no intention of giving up the fight.
布雷迪声称他无意放弃这场战斗。
【拓展】declare与announce
declare用于正式场合，清楚有力地让人知道某件大事、要闻或官方的立场、态度等。用于普通场合，给人“一本正经”的感觉。
announce把人们关心或感兴趣的事公布于众。
The war was declared illegal by the International Court of Justice.
国际法庭宣布这场战争是非法的。
If I have a birthday party, I want to announce it to my friends.
如果我办生日晚会的话，我想通报我的朋友们。
dedicated
【原句回放】The pioneers of the 20th century were all dedicated to improving all the quality of human life on earth. 这些20世纪的先驱们都致力于提高地球上的人类生活的质量。
【点拨】dedicated adj. 专注的，敬业的，有奉献精神的
常用搭配：be dedicated to doing sth. 致力于，献身于
He’s a dedicated young man who knows his own mind.
他是一个有献身精神的年轻人,有自己的想法。
The society was dedicated to furthering the cause of world peace.
该协会致力于推动世界和平事业。
【拓展】dedicate vt. 奉献，致力于
The judge dedicated his life to fighting corruption.
这名法官毕生致力于反腐败斗争。
condition
【原句回放】…people will know the condition of their health. ……人们就会知道他们身体的健康状况。
【点拨】condition n. 条件，状况
常用搭配：
on no condition 决不
in good/ poor condition 身体健康/不好；情况良好/不好
on condition that... 如果……，在……条件下
out of condition 状况不佳
The test was carried out under normal conditions.
该试验是在标准状况下进行的。
Now the operating conditions are much better than before.
目前操作条件比过去好得多了。
On condition of your signing this receipt, I will pay you the money.
如果你在这张收据上签字，我就付款。
The patient was in a pitiful condition.
那个病人处于一种非常可怜的状况。
重点短语
single out
【原句回放】...it is possible to single out a few pioneers of the 20th century. ……但是挑选出20世纪的几个先驱者是可能的。
【点拨】single out 挑出，选出（尤指人或物以进行表扬与批评）
I don’t see why he should be singled out for special treatment.
我不明白为什么把他挑出来特别款待。
Our programme was singled out as being particularly good.
我们的程序特别棒，因此被挑选出来了。
His article starts by singling out the five key goals of the US foreign policy.
他的文章一开始就突出了美国对外政策的五个重点目标。
be about to
【原句回放】Edwin Hubble was about to make astronomy’s greatest breakthrough of the century. 埃德温·哈勃即将实现本世纪天文史上最伟大的一次突破。
【点拨】be about to 即将，正要
The new school year is about to begin.
新学年开学在即。
The medical team is about to start when it began to rain.
医疗队就要出发了，突然开始下起雨来。
【拓展】易混表达法
1. be to do
1)表示事先商定、安排或准备要做的事情。
The students are to meet at the school gate tomorrow.
明天学生们将在学校大门口集会。
2）表示可能性、必要、责任、义务、禁止等。
Her necklace was not to be found.
她的项链找不到了。
2. be going to do
表示按计划和打算将要进行的动作或有迹象表明要发生的动作。
Look at those black clouds. It is going to rain soon.
看那些乌云，要下雨了。
I’m going to wash the car if I have time.
若有时间我想洗洗车。
wrestle with
【原句回放】The navy turned to Eckert, an engineer, and Mauchly, a physicist, to wrestle with the problem and produce a machine to do the job. 海军方面向工程师埃里克和物理学家莫克利寻求帮助，请他们解决问题并制造一台能完成工作的机器。
【点拨】wrestle with 努力解决(sth.)，同(某人)搏斗/扭打
He has been wrestling with the difficult problem.
他一直在努力解决这个难题。
He helped her wrestle with the difficulties she met.
他帮助她克服了她遇到的许多困难。
【拓展】wrestle v. 摔跤，扭打
He wrestled with one of his classmates.
他与一个同学扭成一团。
turn to
【原句回放】The navy turned to Eckert, an engineer, ... 海军方面向工程师埃里克求助……
【点拨】turn to 求助于；查阅；变成
常用搭配：turn to sb./sth. for sth. 因为某事求助于某人/物
I had to turn to the dictionary (for help).
我只得求助于词典了。
When he was unhappy, he would turn to alcohol.
心情不好的时候，他总是借酒消愁。
The child turned to his mother for comfort.
那孩子向母亲寻求安慰。
He turns to his notes for the exact figures.
他从笔记里查找确切的数字。
get stuck
【原句回放】I think there will be an invention that will help prevent drivers from getting stuck in traffic jams. 我认为将会有一种发明来帮助司机不至于陷入交通阻塞。
【点拨】get stuck 陷入（困境），被困住，被卡在
The zip on my coat has got stuck.
我的大衣上的拉链卡住了。
The ambulance got stuck in a muddy side road.
救护车在一条泥泞的小路上抛锚了。
【拓展】get done
1. 系动词get后跟过去分词作表语，过去分词有被动含义，意为“进入或变成某种状态”。
2. 部分过去分词已转化成形容词，相当于be done，但get done更强调动作的结果，体现动作性。
The computer got damaged when we were moving. 搬家时计算机弄坏了。
Don’t get caught in the heavy snow. 别被大雪困住了。
Do not rub, as this may break any blisters and the wound may get infected.
不要擦拭，因为这样做可能会擦破水泡，伤口会感染。
make a mess of
【原句回放】Let’s just hope we don’t make such a mess of it... 让我们只是期盼别再搞得如此糟糕……
【点拨】make a mess of 把……搞糟糕
They’ve made such a mess of economy.
他们把经济状况搞得如此糟糕。
Let’s be honest. Most of people make a mess of handling money.
说实话，大多数人不擅长理财，总是搞得一团糟。
I made a complete mess of that test.
那次测试我考得一团糟。
【拓展】mess n. 混乱，杂乱，肮脏
vt., vi.（常与up连用）弄脏，弄乱；弄糟
Your room is in a mess. Please tidy it.
你的房间杂乱不堪，请把它打扫干净。
I’ve just cleaned the floor, and you’ve messed it up again!
我刚扫干净地板，你又把地板弄脏。
not to mention
【原句回放】Amazing discoveries were made in medicine, communications and transport, not to mention our knowledge of the world and space. 在医学领域、通信和交通方面都有一些令人吃惊的发现，更不用说我们对世界和空间知识的发现了。
【点拨】not to mention 更不用提，更不用说（常作插入语）
He has a big house and an expensive car, not to mention a villa in France.
他有一所大房子和一辆昂贵汽车，且不说在法国还有一座别墅了。
I enjoyed the meal, not to mention the conversation.
我很喜欢那顿饭，更不用说席间的谈话了。
【拓展】表示“更不用说”的短语还有：
to say nothing of, let alone, without mention
I can’t afford a bicycle, let alone a car.
我连一部自行车也买不起，更不用说买小轿车了。
重点句型
倍数的表达法
【原句回放】By the middle of the century, computers that are millions of times smarter than us will have been developed. 到本世纪中叶，比人类聪明数百万倍的计算机将问世。
【点拨】倍数的表达法
1. 倍数+ as+形容词/副词+as
2. 倍数+形容词/副词比较级+than
3. 倍数+the +名词（size/length/height等）of
4. 倍数+ what从句
This car costs twice as much as that one. 这台小轿车是那台的两倍。
This house is three times bigger than that one. 这座房子是那座的三倍大。
The avenue is twice/ double the width of that one. 这条大街是那条大街的两倍宽。
People’s average income is almost five times what they earned before.
人们的平均收入是以前人们挣的钱的五倍。
表示并列的when
【原句回放】In the summer of 1905, this outspoken young man was rocking his one-year-old baby when he was suddenly inspired. 1905年夏天，这位直率的年轻人正在轻摇他一岁的孩子，这时他突然产生了灵感。
【点拨】表示并列的when
when在句中用作并列连词，意为“这时”，相当于at that time。
常用搭配：be doing... when... 正在做……这时……
be about to do sth. when... 刚要做某事这时……
be (just) on the point of doing sth.... when... 刚要做某事这时……
had done... when... 刚做了……这时……
She was just about to say something more when she noticed the angry look on his face.
她刚要再说些什么，却突然看到了他愤怒的脸色。
The coach was just on the point of giving up the game when our team scored two points.
教练正准备放弃比赛，这时我们队得了两分。
I was thinking of this when I heard my name called.
我正想着这件事时，突然听到有人叫我的名字。
He had just finished the book when supper was served.
我刚刚读完这本书，这时晚饭就端上来了。
before小结
【原句回放】Before he went on holiday, biologist Alexander Fleming left a dish with bacteria in it in his laboratory. 去度假之前，生物学家亚历山大·弗莱明把一个带有细菌的盘子放在实验室。
【点拨】before小结
1. 表示“在……之前就……”
Tom had finished his homework before his mother returned.
汤姆在他妈妈回来之前就做完了作业。
2. 表示“过了多久才……”
We waited a long time before the train arrived.
我们等了很长时间火车才到。
3. 表示“来不及，尚未……就……”
Before she could move，she heard a loud noise，which grew to a terrible roar.
她还没来得及迈步，就听见一声巨响，接着就是可怕的隆隆轰鸣。
4. 表示“不知不觉就……，还没有弄清楚就……”
Time passed quickly and three months went by before Li Ming knew it.
时间过得很快，还没等李明弄清楚怎么回事，三个月就过去了。
5. 用于句型：It was +时间段+before... 过去多久才……
It was three days before he came back.
过了三天他才回来。
6. 用于句型：It was not long before ... 不久就……
It wasn’t long before she became a brave solider.
没过多久她就成了一名勇敢的战士。
7. 用于句型：It will (not) be + 时间段 +before... 要过多久才，不久就……
It will be two weeks before everything returns to normal.
两周后一切才能恢复正常。
巩固练习
一、单词填空
根据句意及所给汉语提示或首字母用本课单词的正确形式完成句子。
1．P________ man made himself tools from sharp stones and animal bones.
2．It was announced that only when the fire was under control would the residents be p________ to return to their homes.
3．We have time and again d________ to the world that we’ll never be the first to use nuclear weapons.
4. It was impossible to predict the o_________ of the election.
5. We should w__________ with our difficulties rather than give up.
6. Most graduates nowadays prefer to find a p____________ job rather than a temporary one.
7. Weather ____________ (允许), we’re going to the beach this weekend.
8. This medicine is ______________ (有毒的) if taken in large quantities.
9. Her grandfather had clearly been a ____________ (投入的) traveller before he was eighty.
10. The heavy rain made a great ________ (杂乱) of the garden.
二、根据汉语提示，完成句子。
1. You can’t take photographs here __________ (未经许可).
2. I imagine that to ____________ (挑选) by the teacher for the speech is indeed an honor.
3. John______________ (进行了搏斗) the robbers in the street yesterday.
4. I tried to stand on my own two feet rather than ________ (求助于)my parents.
5. I can’t afford to buy a used car now ____________ (更不用说) a new one.
6. The security system will not ___________ (允许你进入) without the correct password.
7. They set up a committee_________________ (来调查这一事件).
8. Traffic has _________ (下降) since the tunnel opened.
三、单项选择
1. The stones each ______as much as two tons.
A. weigh B. measure C. was weighted D. are measured
2. The judges had different ideas about the results, so it was two hours before the results were ________.
A．cried out B．let out C．announced D．claimed
3. You shouldn’t allow ______ games near the classroom, for it’s too noisy.
A. students playing B. play C. students to play D. to play
4. It was a long time before the cut on my hand ________ completely.
A. healed B. cured C. improved D. recovered
5. At a rough estimate, Nigeria is ________ Great Britain.
A. three times the size as B. the size three times of
C. three times as the size of D. three times the size of
6. Living conditions in the village are still quite ________.
A．modern B．primitive C．theoretical D．far-reaching
7. The students were not ________ to leave the classroom without an adequate reason.
A．permitted B．admitted C．hope D．promised
8. Attendance at football matches has greatly ______ since they can be broadcast live on TV.
A. dropped in B. dropped off C. dropped out D. dropped by
9. Everybody was touched ________ words after they heard her moving story.
A．beyond B．without C．of D．in
10. She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.
A．turn to B．look for C．deal with D．talk about
11. Be careful when you cross this very busy street. If not, you may _______ run over by a car.
A. have B. get C. become D. turn
12. My enthusiasm for the football team gradually _________ because of their countless failures.
A. disappeared B. faded C. ran out D. gave up
13. In __________ with the dilemma of worldwide hunger, the United Nations set up an agency called the World Food Programme (WFP) in 1963.
A. wrestling B. pushing C. spread D. reduce
14. He doesn’t have enough money for food, ________ amusements.
A. in other words B. on the other hand C. not to mention D. to be honest
15. ________ himself to children’s charity work, the famous actor missed _______ from a terminal disease.
A. Dedicated; being saved B. Dedicating; being saved
C. Dedicated; to be saved D. Dedicating; to be saved
16. He was about to tell me the secret ______ someone patted him on the shoulder.
A．as B．until C．while D．when
17. The workmen made so much _____ that Mrs. Walker had to spend three days cleaning up afterwards.
A. trouble B. damage C. mess D. nuisance
18. Linda didn’t get there on time because of the bad weather. What’s more, her car was in poor __________.
A. position B. condition C. situation D. direction
19. It _____ quite a few years _____ the accused was declared innocent and set free.
A. was; since 2 B. is; that C. will be; when D. was; before
20. Please_______ that city on the map, whose______ we cannot find easily.
A. situate; situation B. situate; location C. locate; situation D. locate; location
答案与解析：
一、单词填空
1. Primitive 2. permitted 3. declared 4. outcome (结果) 5. wrestle
6. permanent (固定的) 7. permitting 8. poisonous 9. dedicated 10. mess
二、根据汉语提示，完成句子。
1. without permission 2. be singled out 3. wrestled with 4. turned to
5. not to mention 6. permit you to enter 7. to look into the matter
8. dropped off
三、单项选择
1. A。句意：每块石头重达两吨。weigh是不及物动词，不可以用被动语态，意为“有……重”。
2. C。announce多用于宣布人们所关心或感兴趣的事情，尤指新闻之类的消息；claim 声称，断言；cry out喊出来；let out泄露，放大。句意：法官对结果有不同的意见，所以两个小时后才宣布结果。故选C项。
3. C。句意：你不应该允许学生们在教室附近做游戏，太吵了。allow sb. to do sth.表示“允许某人做某事”，一般不用动词-ing形式作宾语补足语，所以选C。
4. A。本题考查易混动词辨析。heal指治好外伤或烧伤后的患部，也可作不及物动词用，指伤口愈合；cure指用药物治疗并治愈某种疾病或改正不良习气；improve指病情有好转；recover意为“痊愈，康复”。本题指手上的刀口，因此，用heal。
5. D。本题考查倍数的表示法。本题为“倍数＋the length /size/ area/ height/ width/ depth /price /weight /age＋of”结构。
6. B。句意：在这个村庄的生活条件仍然是非常简单朴素的。modern“现代的”，primitive“原始的”；theoretical“理论上的；假设的”；far-reaching“影响深远的”。
7. A。句意：没有充分的理由学生们不允许离开教室。permit sb. to do sth →sb.is permitted to do sth.“被允许做某事”；admit意为“承认；允许进入”；可以说 admit sb. to/into＋n.但不可说成 admit sb. to do sth.。所以A项正确。
8. B。drop off 下降，减少；drop in 拜访；drop out 退出，退学；drop by 顺便访问。足球比赛在电视上直播了，现场看比赛的人数应该是“下降”了，所以选B。
9. A。句意：在听了她的动人的故事后，他们每个人都深深地感动了，这种感动是无法用言语表达的。beyond意为“超出，超过”。
10. A。句意：她在操作这台新电脑方面有困难，但是她不知道该向谁求助。turn to“求助于”；look for“寻找”；deal with“应对，处理”；talk about“谈论”。故选A。
11. B。“get+过去分词”是被动语态的一种表达形式，表示突然、偶然的情况，而其它选项则不能构成被动语态。句意：当你穿过这条繁忙的大街时，务必要小心，否则你会被汽车轧到的。run over（车辆）轧过，压过。
12. B。根据句意，因为那个足球队数不清的失败，对他们的热情渐渐消失了，所以选B。fade (声音、热情)渐渐消失，或颜色褪色；disappear (通常指因位置改变而)消失，不见；run out（某物）用尽；give up 放弃。
13. A。句意：在与全球的饥荒困境作斗争的过程中，联合国于1963年成立了一个名为世界粮食计划署的专门机构。wrestle with全力解决，与……搏斗。其它选项不与with搭配，不合题意。
14. C。句意：他没有足够的钱吃饭，更不用说娱乐了。in other words 换句话说；on the other hand 在另一方面；not to mention 更不用说；to be honest 说实话。
15. B。句意：那位著名的演员致力于儿童慈善工作，错过了从绝症中得救的机会。dedicate是及物动词，意为“致力于，奉献”，因有宾语himself，与句子的主语the famous actor是主动关系，应用动词-ing形式；miss后接动词时要用动词-ing形式，所以选B。
16. D。be about to do... 正要做某事……；when是并列连词，表示“这时”，不能用while，as替换。
17. C。考查短语的用法。make mess 弄得乱七八糟。Make a mess of 把……弄得乱七八糟” trouble 麻烦 damage 损害 nuisance 讨厌的人。
18. B。in poor condition 意为“状况很坏”。句意：由于天气恶劣，加之车况也不好，琳达没能按时赶到那里。
19. D。A项中was改成is就是正确的，即从句中谓语先发生。如用B项，是强调句，而强调句前后两个谓语动词在时间上应该一致；被强调部分能还回原句中，即因为句中was declared是过去时, B项中is改成was；因为句中was declared是非延续性动词，在years后加上ago将“一段” 时间变成“一点”就是正确的。C 项前后时间不一致。句意：过了几年，被告才被宣布无罪释放。
20. D。句意: 请在地图上找出那座城市的位置, 它的地理位置很难找到。locate 及物动词，意为“确定、找出物体的位置”；location地理位置。situate使位于，使处于；situation情况，境况，形势。因此选D。