高二英语Unit10Frighteningnature知识精讲试题.pdf
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1、日期:2022 年二月八日。日期:2022 年二月八日。高二英语 Unit10 Frightening nature 制卷人:打自企;成别使;而都那。审核人:众闪壹;春壹阑;各厅 日期:2022 年二月八日。一.本周教学内容:Unit 10 Frightening nature 二.教学目的:1.Master some phrases and sentence patterns 2.Talk about natural disasters:volcanoes and typhoons 3.Write a creative writing 三.教学重点与难点:Learn about Ellips
2、is 四.详细内容:Background information Volcanoes There are thousands of volcanoes all over the world.What makes volcanoes?What happens?The inside of the earth is very hot.Because it is very,very hot,the rock has melted like ice.It has become liquid,like water.It is always boiling,like water in a kettle.If
3、 you have seen a kettle boiling,you know that the steam and boiling water try to get out.The very hot melted rock inside the earth also tries to get out.Usually it cannot because the outside of the earth is too thick and strong.But in some places the outside of the earth is thin and weak.Sometimes a
4、 crack appears.The hot melted rock,which we call“lava,pushes up through the crack and bursts through.Steam and gas shoot up into the 日期:2022 年二月八日。日期:2022 年二月八日。air and the hot melted lava pours out.Big pieces of rock may be thrown high into the air.After a while the volcano becomes quiet again.The
5、melted lava becomes hard.Later the same thing happens again and again.Each time more hot lava pours out on top of the cold lava and then becomes hard.In this way a kind of mountain is built up,with a hole down the middle.Perhaps the volcano will then be quiet and no more lava will burst out.Perhaps
6、it will start again hundreds of years later.Although there are thousands of volcanoes in the world,most of them are dead.Only about 500 sometimes start to throw out lava again.A famous volcano which is now dead is Mount Fujiyama in Japan.It is covered with snow in winter.Vesuvius is the name of a ve
7、ry famous volcano in Italy.It first came to life many,many years ago.It was quiet for hundreds of years.Then in the year 79 it suddenly burst.A great cloud of smoke shot up into the sky with great burning rocks,which fell all around.Hot lava poured down its sides.About 3000 people were killed.This h
8、as happened again many times since that year.Sometimes no damage was caused,or only little damage.But there was serious damage in the years 472,1631,1794,1861,1872 and 1906.You can see that a volcano can stay alive for many years.In 1906 part of the top of the mountain fell off.There was also seriou
9、s damage in 1914 but there has not been any since last year.Fire and smoke coming from the top of the mountain have always made people curious about the source of that fire and what the interior of the earth might look like.The power,heat and bright red and orange colors of melten rock are as fascin
10、ating as ever.Many accidents have happened to people who are drawn too close to observe this maginificent spectacle.People have always known volcanoes to be dangerous.Nonetheless,we find human communities and villages built at the foot of many volcanoes everywhere around the world.This is because th
11、e earth around volcanoes is very fertile,so farmers were always attracted to plant their crops near these mountains.Also,the 日期:2022 年二月八日。日期:2022 年二月八日。fact that some volcanoes have long periods of time without being active,has often given people a sense of security.Some volcanoes that had been ina
12、ctive for many generations and were thought to be dead,suddenly sprang back to life and killed thousands of people.Tornado The phenomenon usually occurs on a hot,sticky day with south winds and an ominous sky.From the base of a thunderhead,a funnel-shaped cloud extends a violently twisting spout tow
13、ard the earth.As it sucks in matter in its path,the twister may turn black,brown,or occasionally even white.The moving cloud shows an almost continuous display of sheet lightening.It lurches along in a meandering path,usually northeastward,at 25 to 40 miles per hour.Sometimes it picks up its finger
14、from the earth for a short distance and then plants it down again.The funnel is very slender,its wake of violence averages about 400 yards wide.As the tornado approaches,it is heralded by a roar as of hundreds of jet planes or thousands of railroad cars.Its path is a path of total destruction.Buildi
15、ngs literally exploded as they are sucked in by the tornados low-pressure vortex and by its powerful whirling winds.The tornados lifetime is as brief as it is violent.Within a few tens of miles,it spends its force and suddenly appears.Earthquakes Earthquake is a sudden,violent shaking of the earths
16、surface.Its a kind of crustal movement form of expression.Earthquake is regarded as one of the most damaging forces known to man:since records began to be written down,it has been estimated that earthquake-related fatalities have been numbered in the millions,and that earthquake-related destruction
17、has been beyond count.The great majority of all earthquakes occur in two specific geographic areas.One such area surrounds the 日期:2022 年二月八日。日期:2022 年二月八日。Pacific Ocean and its contiguous land masses.The other extends from the East India to the Atlas Mountains,including the Himalayas,Iran,Turkey,and
18、 the Alpine regions.It is in these two great belts or zones that ninety percent of all earthquakes take place.As to our country,a large number of earthquakes happened in North China and Northwest China.The powerful earthquake of Tangshan happened in the city of Tangshan,Hebei Province on July 28th,1
19、976,which caused more than 240,000 deaths and the whole city was destroyed.Typhoons Typhoons are frequent along the southeast coast of China and on the south Chinese island Taiwan and Hainan.They can cause a lot of damage and even loss of life.Still,to people who are used to them,they are mostly a n
20、uisance and seldom a serious threat.If you are living in an area where typhoons occur,people usually know how to prepare for them.Typhoon is a Chinese loan word that is now used I English.Similar kinds of winds are called huricanes or cyclones.Language Points 1.threat n.1威胁;恫吓 2凶兆 carry out a threat
21、 to do sth.扬言要做某事 be a threat to sbs life relieve the threat of flood 她威胁说要把我的机密公开。她恫吓说要把那张照片公开。核武器威胁着世界的和平与平安。2.be scared/frightened to death starve to death;burn to death;work to death;bore to death;put to death;shoot to death;sentence to death 日期:2022 年二月八日。日期:2022 年二月八日。假如你把他打死,你肯定会判死刑。解放前,每年都有成
22、千上万的人饿死。3.on end 竖着;连续地 set sbs hair on end 使人毛骨悚然 It has been snowing for a week on end.The terrible sight made her hair stand on end.bring.to an end 使终止 come to an end 完毕;完毕 put an end to 使终止 end up with 以告终 from first to end 从头到尾 make ends meet 使收支相抵;量入为出 the ends of the earth 遥远地区;天涯海角 4.有的形容词只能
23、做表语或者宾语补足语,不能用作前置定语。alive;alone;awake;afraid;asleep;ashamed Its not very easy to fall asleep in a sleeping car.5.rise&arise rise:太阳;月亮升起;起来;物价上涨;水高涨 arise:问题、困难发生;产生;出现;起风、雾 The sun arises in the east.He rises early every day.Raise your right hand.日期:2022 年二月八日。日期:2022 年二月八日。The farmers raised crops
24、 and cattle.6.tell from 把甲乙区分开来 The twin brothers look so alike that I can hardly tell one from the other.You should learn to tell true friends from false ones.7.在某些句子构造中,不定式虽然表示被动的意思,但仍用主动形式。He gave me some books to read.We found the report easy to understand.English is very hard to learn.在上述句子中,不定
25、式虽然与它所修饰的名词或者代词构成动宾关系,但同时与另一个名词有主谓关系,这是主动形式表示被动意义。但假如不定式不与句中的另一个名词构成谓语关系,在表示被动时仍用不定式被动式。Have you anything to be repaired?Lets visit the room to be used as the reading room.8.“with+介词短语 复合构造,表示行为方式或者伴随情况。The teacher came in,with a book in his hand.She sat there with tears on her cheeks.所有的灯开着,我们的教室非常
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