Cholera used to be one of the most feared diseases in the world, until a British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrhoea, dehydration, and even death. In the early 19th century, when an outbreak of cholera hit Europe, millions of people died from the disease. As a young doctor, John Snow became frustrated because no one knew how to prevent or treat cholera. In time, he rose to become a famous doctor, and even attended to Queen Victoria when she gave birth. However, he never lost his desire to destroy cholera once and for all.
In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was that bad air caused the disease. Another was that cholera was caused by an infection from germs in food or water. Snow subscribed to the second theory. It was correct, but he still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days. He was determined to find out why.
so severe that more than 500 people died 为 so...that... 引导的结果状语从句,表示"如此……以至于……"。
例:The box was so heavy that I couldn't lift it. 箱子太重了,我搬不动。
区别:such...that... 修饰名词
Snow began by marking on a map the exact places where all those who died had lived. There were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37, 38, and 40). However, some households (such as 20 and 21 Broad Street, and 8 and 9 Cambridge Street) had had no deaths. These people worked in the pub at 7 Cambridge Street. They had been given free beer, and so had not drunk the water from the pump. Snow suspected that the water pump was to blame. What is more, in another part of London, a woman and her daughter had died of cholera after moving away from Broad Street. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. As a result of this evidence, John Snow was able to announce that the pump water carried cholera germs. Accordingly, he had the handle of the pump removed so that it could not be used. Through this intervention, the disease was stopped in its tracks.
multiplehouseholdsuspectbe to blameproofas a result of
have + 宾语 + 过去分词
had the handle of the pump removed 和 had it delivered 中,have + 宾语 + 过去分词 表示"让某事被做",过去分词表被动。
例:I had my hair cut yesterday. 我昨天理了发。
区别:have + 宾语 + do/doing 表示不同含义
The truth was that the water from the Broad Street pump had been infected by waste. Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies sold water from the River Thames that was polluted by raw waste. The people who drank this water were much more likely to get cholera than those who drank pure or boiled water. Through Snow's tireless efforts, water companies began to sell clean water, and the threat of cholera around the world saw a substantial decrease. However, cholera is still a problem. Each year, millions of people around the world get cholera and many die from it. Fortunately, we now know how to prevent cholera, thanks to the work of John Snow. Moreover, in his use of maps and statistics, Snow transformed the way scientists study diseases. For this reason, Snow is considered the father of modern epidemiology.
the way scientists study diseases 中 the way 后的定语从句可用 that / in which 引导,也可省略关系词。
例:I don't like the way (that) he talks. 我不喜欢他说话的方式。
文化拓展
John Snow被称为"现代流行病学之父",他开创了使用地图和统计数据追踪疾病传播的方法,这一方法至今仍是流行病学研究的基础。
要点摘要
霍乱曾是世界上最令人恐惧的疾病之一,约翰·斯诺决心彻底消灭它
当时关于霍乱传播有两种理论:空气传播和细菌传播,斯诺赞同后者
斯诺通过地图标记发现水泵附近死亡集中,拆掉水泵手柄后遏制了疫情
斯诺证实水泵水被废物污染,他的工作改变了疾病研究方式,被称为现代流行病学之父
Reading for Writing
THE FATHER OF CHINA'S AEROSPACE
中国航天之父
Perhaps no other scientist has had a greater impact on China's aerospace science than Qian Xuesen. Described by the authors of the Story of Qian Xuesen as a man with "great scientific thought and scientific spirit" who was patriotic and served his homeland with effort, achievement, and devotion, Qian was an extremely well-respected man.
no other... has had a greater... than 用比较级形式表达最高级含义,意为"没有比……更……的了",即"……是最……的"。
例:No other student is taller than Tom in our class. 我们班没有比汤姆更高的学生了。
过去分词短语作状语
Described by the authors... as a man... 为过去分词短语作状语,表示被动和伴随状态,逻辑主语为 Qian。
例:Born in a small village, he knew the hardship of country life. 出生在一个小村庄里,他深知农村生活的艰辛。
Born in Hangzhou in 1911, Qian attended schools in Beijing and then entered Shanghai Jiao Tong University to study Railway Mechanical Engineering. However, after the Songhu Battle broke out in 1932, Qian made the decision to switch his major to aviation because he realised that China needed its own powerful air force to protect and defend the country.
Born in Hangzhou in 1911 为过去分词短语作时间状语,逻辑主语为 Qian,相当于 When he was born...。
例:Born in a poor family, she had to work hard. 出生在贫困家庭,她不得不努力工作。
Qian went to the United States in 1935 to pursue his graduate studies. Over the course of the 1930s and 1940s, Qian became a pioneer in American jet and rocket technology. As a graduate assistant at the California Institute of Technology during the 1930s, Qian helped conduct important research into rocket propulsion, and in the 1940s, he and several other people founded the Jet Propulsion Laboratory, now one of NASA's leading space-exploration centres.
now one of NASA's leading space-exploration centres 为 JPL 的同位语,补充说明其现状。
例:Beijing, the capital of China, is a beautiful city. 北京,中国的首都,是一座美丽的城市。
After overcoming some difficulties during his final few years in the US, Qian returned to China in 1955. He received a hero's welcome from his homeland and was put in charge of not only developing China's rocket science but also its space and missile programme. At that time, China was poor and its rocket science was undeveloped. No institute or university in China offered rocket science as a major, and there were no talents or experts in this field in China. Nevertheless, Qian did not let that discourage him from taking on the challenge. When asked "Can we Chinese possibly make missiles?", his reply was a determined "Why not? We Chinese are able to make the same things that other people make."
not only developing...but also its space and missile programme 为 not only...but also... 并列结构。
注意:not only 置于句首时,前半句需部分倒装。
例:Not only did he finish the work, but also he did it well. 他不仅完成了工作,而且做得很好。
过去分词作时间状语
When asked = When he was asked,过去分词作时间状语,省略了与主句相同的主语和 be 动词。
例:When asked about his plan, he remained silent. 当被问到他的计划时,他保持沉默。
Under Qian's leadership, China developed the Dongfeng missiles, followed by the first generation of Long March rockets. In 1970, China successfully launched its first man-made satellite, Dong Fang Hong I, from a Long March rocket. Because much of the technology behind the Shenzhou rockets can also be traced back to Qian's research, Qian earned the name of "the father of China's aerospace". Qian read a lot and was extremely knowledgeable, especially in the area of frontier science research. However, what might have made him such an outstanding and creative scientist was probably his strong interest in other things, such as music and drawing. His deep appreciation for art often gave him inspiration in his scientific research.