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1、1. With annual rainfall close to zero, Antarctica is technically a desert. 南极洲年降雨量几乎为零，严格来说南极洲年降雨量几乎为零，严格来说该区域就是一片荒漠。该区域就是一片荒漠。 with annual rainfall close to zero 为为介词短语，表示原因，由介词名介词短语，表示原因，由介词名词形容词（词组）组成，也即词形容词（词组）组成，也即“with +宾语形容词短语宾语形容词短语”构成的构成的复合结构。例如：复合结构。例如：With so many students weak in their p
2、ronunciation, they started from the beginning. He sat there quietly with mouth half open, listening to the radio. He sat there with his eyes _(fix) on the sky. fixedHe sat there with his hand _ (point) at me.pointingHe went to the classroom with a lot of homework _.to do2. Covering about 14 million
3、square kilometers around the South Pole, it is the fifth largest continent in the world.南极洲覆盖了南极圈周围南极洲覆盖了南极圈周围1,400万平方万平方公里的面积，是世界第五大洲。公里的面积，是世界第五大洲。1) covering about在句子中作状语。在句子中作状语。 2) the fifth largest continent in the world. 形容词最高级前面的修饰成分为序数词。形容词最高级前面的修饰成分为序数词。 Is it the third longest river in th
4、e world? 形容词最高级前面还可有其他的成分。形容词最高级前面还可有其他的成分。It was by far the best university I have visited. It was of the very highest quality.3. On average it is two kilometers thick, but in some places it reaches a depth of five kilometers. (南极洲南极洲)冰层平均厚度为冰层平均厚度为2，000米，但米，但某些地方厚度可以达到某些地方厚度可以达到5，000米。米。词组词组two ki
5、lometers thick，形容词，形容词thick 增加了修饰成分增加了修饰成分 two kilometers。例如：例如： The rope is two meters long. The well is 12 meters deep. 但是注意下面情况：但是注意下面情况： It is a 12-meter-long rope.The 12-meter-deep well is the deepest one in our village.4. As a result, it has become a window on the past, and can give researcher
6、s lots of useful information.因此，它已经变成人们了解过去的窗因此，它已经变成人们了解过去的窗口，可为研究者提供大量有用的信息。口，可为研究者提供大量有用的信息。 window 窗户，窗口窗户，窗口 在此引申为在此引申为“获获得信息的渠道得信息的渠道” 。International news broadcasts provide a window on the world. 5. But the long Antarctic winter night, which lasts for 182 days (the longest period of continuou
7、s darkness on the earth ) as well as the extreme cold and lack of rainfall, means that few types of plants can survive there. 但是南极洲冬天的夜晚长达但是南极洲冬天的夜晚长达182天天(地球地球上持续时间最长的黑暗时期上持续时间最长的黑暗时期), 气候极度气候极度寒冷降雨量极少寒冷降雨量极少,这意味着很少有植物能这意味着很少有植物能够在这里生存。够在这里生存。 1) which lasts for 182 days 这是一个这是一个非限制性定语从句。在非限制性定语从非限
8、制性定语从句。在非限制性定语从句中，句中，which 有时并不代表一个名词，有时并不代表一个名词，而是代表前面句子的全部或部分意思：而是代表前面句子的全部或部分意思：He changed his mind, which made all of us angry. The students finished the work by themselves, which was encouraging.2) as well as 是一个并列连接词是一个并列连接词He wrote three famous novels as well as some plays.It is a political a
9、s well as an economic question. 3) few 表示很少，几乎没有。表示很少，几乎没有。He is among the few people I can trust.Very few people can afford to pay those prices.Few of the children can read or write yet. 6. Gases and minerals, in the form of volcanic dust trapped in the ice, can tell us a lot about what the worlds
10、climate was like in past ages.这些以火山灰形式封冻冰层里的气体和矿这些以火山灰形式封冻冰层里的气体和矿物质可以告诉我们很多关于远古时期全球物质可以告诉我们很多关于远古时期全球气候的状况。气候的状况。1) in the form of volcanic dust trapped in the ice 介词短语作定语介词短语作定语,修饰修饰gases and minerals,可以把它改成非限制性定语从句可以把它改成非限制性定语从句: which are in the form of volcanic dust trapped in the ice. 2) in th
11、e form of “以以形式形式” 或或“呈呈形状形状” The main staircase was in the form of a big “S” .主楼梯呈主楼梯呈S形。形。People are bombarded with information in the form of magazines and TV advertising.信息以杂志和电视广告的形式向人们连续信息以杂志和电视广告的形式向人们连续轰炸。轰炸。3)trapped in the ice 是是-ed 形式作定语的情形式作定语的情况，修饰况，修饰volcanic dust。7. Not until the late
12、 18th century did the British explorer James Cook cross the Antarctic Circle, but he never saw land. 直到直到18世纪末，英国探险家詹姆斯世纪末，英国探险家詹姆斯 库克库克才穿越了南极圈，但他却从未发现陆地。才穿越了南极圈，但他却从未发现陆地。 not until 用在句首应该用倒装结构。用在句首应该用倒装结构。 until 用在肯定句中主句的谓语动词应该用在肯定句中主句的谓语动词应该是延续性动词是延续性动词,用在否定句中用非延续性用在否定句中用非延续性动词动词, 也可以用在强调句型中。也可以用
13、在强调句型中。He kept working until his wife came back. He didnt stop working until his wife came back. It was _ that_. not until his wife came back Not until his wife came back did he stop working. he stopped working8. Then in 1895, a Norwegian called Carstens Borchgrevink became the first man to set foot
14、 on the Antarctic mainland. 后来到了后来到了1895年，一个叫卡斯腾年，一个叫卡斯腾 博克格博克格雷温克的挪威人成为第一个踏上南极大陆雷温克的挪威人成为第一个踏上南极大陆的人。的人。 set foot on/in 踏上踏上;进入进入;涉足涉足 Dont ever set foot in this house again! 永远别再进这个门永远别再进这个门! After an 8-hour flight, we finally set foot on Chinese soil. 经过经过8个小时的飞行，我们终于踏上个小时的飞行，我们终于踏上了中国国土。了中国国土。9.
15、 In 1961, a treaty signed by 12 countries, including Britain, France, and the USA, made Antarctica the worlds biggest nature reserve.1961年年,包括英国、法国和美国在内的包括英国、法国和美国在内的12个国家签署了一份条约个国家签署了一份条约,使南极洲变成了使南极洲变成了世界上最大的自然保护区。世界上最大的自然保护区。1) signed 为为-ed形式作定语的情况，可形式作定语的情况，可以转变成定语从句：以转变成定语从句：which was signed by2) including 为为-ing 形式作定语，可以改形式作定语，可以改变成非限制性定语从句：变成非限制性定语从句： which included
