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高中英语上外版三年级下 unit3

所属教程:高中英语上外版三年级

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https://online2.tingclass.net/lesson/shi0529/0008/8908/z3.mp3
https://image.tingclass.net/statics/js/2012
[00:03.63]Language Points:

[00:06.24]Do and Make

[00:08.91]A:Does your mother do most of the housework in your family

[00:14.08]B:Yes.Usually,my mother does the cooking

[00:17.74]She makes the three meals.

[00:19.80]A:How about the washing-up?

[00:22.18]B:I always have do the washing-up.

[00:25.26]A:And the beds?B:Each of us has to make his or her own bed.

[00:30.12]A:And the shopping?B:In most cases,my mother does the shopping.

[00:35.08]A:I don't think you ever go to the market to buy food for the family,do you

[00:41.25]B:I do go to the market on Sundays with my father or mother

[00:46.24]Listening comprehension

[00:56.82]Listen and fill in the blank.

[03:07.09]Text New Words and Expressions

[03:14.93]shade

[03:17.46]阴凉处

[03:20.00]drought

[03:23.02]旱灾

[03:26.03]eagerness

[03:29.09]渴望

[03:32.14]profit

[03:35.28]利润

[03:38.41]warship

[03:41.24]军舰

[03:44.06]empire

[03:47.09]帝国

[03:50.12]soil

[03:52.70]泥土

[03:55.29]starvation

[03:59.51]饥饿

[04:03.73]plentiful

[04:06.55]多的

[04:09.37]persuade

[04:12.45]劝服

[04:15.53]charcoal

[04:18.62]木炭

[04:21.70]lazy

[04:24.73]懒惰

[04:27.76]unless

[04:30.78]除非

[04:33.79]educate

[04:36.84]村民

[04:39.88]village

[04:43.30]村民

[04:46.72]grandson

[04:50.30]孙子,外孙

[04:53.88]root

[04:56.62]根,根茎

[04:59.37]bind

[05:02.25]使粘合

[05:05.14]worthless

[05:08.21]没用处的

[05:11.28]desert

[05:14.13]沙漠

[05:16.97]Trees are useful to man in three very important ways

[05:27.14]they provide him with wood and other products

[05:32.80]they give him shade

[05:35.97]and they help to prevent drought and floods

[05:40.25]Unfortunately,in many parts of the world,

[05:45.68]people have not realized

[05:48.35]that the third of these services is the most important.

[05:53.99]In their eagerness to draw quick profit from the trees

[05:59.24]they have cut them down in large numbers,

[06:03.18]only to find that without them they have lost the best friends they had.

[06:09.43]Two thousand years ago,a rich and powerful country

[06:16.01]cut down its trees to build warships,

[06:19.98]with which to gain itself an empire.

[06:23.77]It gained the empire but without its trees,

[06:29.10]its soil became hard and poor.When the empire fell to pieces,

[06:36.02]the home country found itself faced with floods and starvation.

[06:41.92]Even though a government realizes the importance of a plentiful supply

[06:51.09]of trees,it is difficult for it to persuade the villagers to see this

[06:57.75]The villagers want wood to cook their food with;

[07:03.63]they can earn money by making charcoal or selling wood to the townsmen.

[07:10.61]They are usually too lazy or too careless to plant and look after new trees

[07:18.47]So,unless the government has a good system of control,

[07:24.92]or can educate the people the forests will slowly disappear.

[07:31.09]This does not only mean that the villagers' sons and grandsonshave fewer trees.

[07:40.13]The results are even more serious:

[07:44.41]for where there are trees their roots break the soil up

[07:48.95]allowing the rain tosink in — and also bind the soil,

[07:54.80]thus preventing its being washed away easily.

[07:58.77]But,where there are no trees,the rain falls on hard groundand

[08:05.61]and flows away from the surface,causing floods

[08:10.05]and carrying away with it the rich top-soil,

[08:13.92]in which crops grow so well.When all the top-soil is gone

[08:20.48]nothing remains but a worthless desert.

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