高中英語(yǔ)上外版三年級(jí)下 unit3

[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]陰涼處 [03:20.00]drought [03:23.02]旱災(zāi) [03:26.03]eagerness [03:29.09]渴望 [03:32.14]profit [03:35.28]利潤(rùn) [03:38.41]warship [03:41.24]軍艦 [03:44.06]empire [03:47.09]帝國(guó) [03:50.12]soil [03:52.70]泥土 [03:55.29]starvation [03:59.51]饑餓 [04:03.73]plentiful [04:06.55]多的 [04:09.37]persuade [04:12.45]勸服 [04:15.53]charcoal [04:18.62]木炭 [04:21.70]lazy [04:24.73]懶惰 [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]孫子,外孫 [04:53.88]root [04:56.62]根,根莖 [04:59.37]bind [05:02.25]使粘合 [05:05.14]worthless [05:08.21]沒用處的 [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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