懂你英語L3U3P1-中英文.doc

1、Level 3 Unit 3 Part1ListeningLife & Conditions 1There are many forms of life on Earth, including human beings.地球上有多種形式的生命，包括人類。Life exists in a variety of conditions.生命存在于各種各樣的環(huán)境中。Some forms of life live in a watery environment, like the oceans.有些生物生活在水環(huán)境中，比如海洋。Other forms of life can be found in ve

2、ry dry areas like deserts.在非常干燥的地區(qū)，如沙漠，也可以找到其他形式的生命。However, for any form of life to exist, conditions must be right.然而，任何形式的生命存在，條件必須是正確的。When conditions are not right, that form of life will become extinct. 當(dāng)情況不佳時，這種形式的生命就會滅絕。To become extinct means to die out completely.滅絕意味著完全滅絕。Conditions must

3、be right for life to exist.環(huán)境必須是生命存在的權(quán)利。Millions of years ago there were forms of life that no longer exist.數(shù)百萬年前，有些生命形式已經(jīng)不復(fù)存在。When conditions changed, these forms of life died out.當(dāng)條件改變時，這些形式的生命就消失了。One extinction event happened about 250 million years ago.一次滅絕事件發(fā)生在大約2.5億年前。This was the largest ext

4、inction event of all time.這是有史以來最大的一次物種滅絕事件。Many forms of life became extinct.許多形式的生命都滅絕了。Ninety six percent of all life in the oceans died out.海洋中96%的生命都滅絕了。Most insects also became extinct.大多數(shù)昆蟲也滅絕了。This event happened over a period of several million years.這件事發(fā)生在幾百萬年的時間里。The causes of this extinc

5、tion event are still unknown.這種滅絕事件的原因尚不清楚。Possible causes include large volcanic eruptions and global warming.可能的原因包括大規(guī)模的火山爆發(fā)和全球變暖。Some scientists believe that there were several causes.一些科學(xué)家認(rèn)為有幾個原因。They believe that a series of events caused the extinctions.他們認(rèn)為一系列事件導(dǎo)致了物種滅絕。Scientists are working

6、to better understand what really happened.科學(xué)家們正在努力更好地了解到底發(fā)生了什么。ListeningLife & Conditions 2In modern times we humans face changing conditions.在現(xiàn)代，我們?nèi)祟惷媾R著不斷變化的環(huán)境。For humans to live, we need clean air and clean water.為了人類生存，我們需要干凈的空氣和清潔的水。Pollution is now a growing problem around the world.在世界各地，污染現(xiàn)在是

7、一個日益嚴(yán)重的問題。Pollution poisons the air and water that we depend on.污染毒害了我們賴以生存的空氣和水。Polluted air makes people sick and afraid to go outside. 污染的空氣使人們生病，不敢出門。Polluted water poisons our food supply.被污染的水毒害了我們的食物供應(yīng)。As a result, we never know which foods are safe to eat.因此，我們永遠(yuǎn)不知道哪些食物是安全的。Human beings cann

8、ot live in a poisoned environment.人類不能生活在有毒的環(huán)境中。Therefore, pollution is a major threat to our existence.因此，污染是對我們生存的主要威脅。Humans need temperatures to be in a comfortable range.人類需要溫度在一個舒適的范圍內(nèi)。To be in a comfortable range means to be neither too hot nor too cold.在舒適的范圍內(nèi)意味著既不太熱也不太冷。With global warming,

9、 global temperatures are rising.隨著全球變暖，全球氣溫正在上升。As temperatures rise, the polar icecaps will melt.隨著溫度的升高，極地冰蓋將融化。As the polar ice caps melt, ocean levels will rise.隨著極地冰帽的融化，海平面將會上升。Areas of some countries will soon be under water.一些國家的一些地區(qū)很快就會被淹沒。People will be forced to relocate from flooded area

10、s.人們將被迫從洪災(zāi)地區(qū)搬遷。In nature, even small changes can sometimes have large effects.在自然界中，即使是很小的變化有時也會產(chǎn)生很大的影響。Its difficult to predict whats going to happen.很難預(yù)測會發(fā)生什么。The entire ecosystem that we depend on is changing.我們所依賴的整個生態(tài)系統(tǒng)正在發(fā)生變化。Some of these changes are irreversible.其中一些變化是不可逆的。Irreversible chang

11、es cannot be undone.不可逆的變化是不可撤銷的。Lets hope that humans are smart enough to understand how the world is changing.讓我們希望人類足夠聰明，能夠理解世界是如何變化的。With more understanding, we can make better choices about what to do.有了更多的理解，我們可以更好地選擇做什么。We can face the challenges of pollution and global warming.我們可以面對污染和全球變暖的

12、挑戰(zhàn)。We need to do this before its too late.我們得趁現(xiàn)在還來得及這么做。This planet Earth is our only home and we need to protect it.地球是我們唯一的家園，我們需要保護(hù)它。 Irreversible changes cannot be undone because they cannot be reversed.Human beings cannot live in a poisoned environment.不可逆的變化不能撤消，因為它們不能被逆轉(zhuǎn)。人類不能生活在有毒的環(huán)境中。Vocabul

13、ary Forms of Life Mammals are covered by hair or fur, have a backbone and are warm-blooded.哺乳動物被毛發(fā)或毛皮覆蓋，有脊椎，而且是溫血動物。All female mammals produce milk for their young.所有雌性哺乳動物都為幼崽產(chǎn)奶。Reptiles are covered by scales and include snakes, lizards and turtles.爬行動物被鱗片覆蓋，包括蛇、蜥蜴和海龜Reptiles have a backbone and ar

14、e cold blooded, which means they often rely on external sources of heat.爬行動物有脊椎，而且是冷血動物，這意味著它們經(jīng)常依賴外部的熱源.Birds are covered by feathers and are warm blooded.鳥被羽毛覆蓋，而且是溫血動物。Most birds can fly and many types of birds migrate great distances.大多數(shù)鳥類會飛，許多種類的鳥類遷徙很遠(yuǎn)。Most insects such as ants and bees have a s

15、mall, 3- part body with 3 pairs of legs.大多數(shù)昆蟲，如螞蟻和蜜蜂，身體很小，有三個部分，有三對腿。Some insects, like mosquitoes, spread diseases that cause the deaths of many humans.有些昆蟲，如蚊子，傳播導(dǎo)致許多人死亡的疾病。Unlike animals, plants get the energy that they need from the sun.與動物不同，植物從太陽那里獲得所需的能量。Plants convert light energy, along wit

16、h carbon-dioxide and water, into chemical energy.植物將光能、二氧化碳和水轉(zhuǎn)化成化學(xué)能。 Most mammals live on land, but some live in the sea.大多數(shù)哺乳動物生活在陸地上，但有些生活在海里。Mammals include some of the most intelligent animals on earth, such as elephants and human beings.哺乳動物包括地球上一些最聰明的動物，如大象和人類。Insects dont have a backbone, and

17、 most are cold-blooded.昆蟲沒有脊椎，大多數(shù)是冷血動物。Insects such as ants and bees live in well-organized colonies.螞蟻和蜜蜂等昆蟲生活在組織良好的群落中Mosquitoes cause the deaths of more humans than any other animal.蚊子造成的死亡人數(shù)比其他任何動物都多。Vocabulary InstrumentsScales and rulers are used to measure weight and length.秤和尺是用來測量重量和長度的。Uni

18、ts of weight include kilograms and pounds, and units of length include centimeters and inches.重量單位包括公斤和磅，長度單位包括厘米和英寸。These instruments are used to observe very large and very small objects.這些儀器用來觀察非常大的和非常小的物體。Telescopes are used by astronomers, and microscopes are used by biologists and doctors.天文學(xué)家

19、使用望遠(yuǎn)鏡，生物學(xué)家和醫(yī)生使用顯微鏡。These appliances are used in the kitchens of almost every home.這些器具幾乎用在每個家庭的廚房里。Stoves are used to heat food, and refrigerators are used to keep foods cool or cold.爐子用來加熱食物，冰箱用來使食物保持涼爽或涼爽。Household tools like these are used to build and repair things.像這樣的家用工具是用來建造和修理東西的Hammers are

20、 used to pound in nails and screwdrivers are used to turn a screw.錘子用來敲釘子，螺絲刀用來轉(zhuǎn)動螺絲。 If you need to pound in a nail, use a hammer.如果你需要用錘子敲釘子Two inches is a little more than five centimeters.兩英寸比五厘米多一點。We can use a telescope to see objects that are far away.我們可以用望遠(yuǎn)鏡看遠(yuǎn)處的物體。Dialogue Dating Anniversary

21、W: Do you know what day it is today?你知道今天是什么日子嗎？M: What do you mean? Is it a special day?你什么意思，今天是特別的日子嗎？W: Oh, so you dont remember. 哦，所以你不記得了。M: Remember what? Whats so special?記得什么？有什么特別的？W: Its our anniversary. We started dating a year ago today. 今天是我們的周年紀(jì)念日。一年前的今天，我們開始約會。M: Oh, really, sorry.哦，

22、真的，對不起。M: Just a minute. What do you think THIS is?等一下。你認(rèn)為這是什么？W: Oh, its a necklace.哦，這是一條項鏈。M: Do you like it?你喜歡嗎？W: Yes, I do. Its lovely, especially the red heart. May I put it on?是的，我很喜歡。它很漂亮，尤其是紅心，我可戴上嗎？M: No, let me do it. 不，讓我來W: So you did remember.所以說你真的記得！M: Of course I remembered. Its a

23、 very special day for both of us.今天對我們倆來說都是非常特別的一天。W: I have something for you too.我也有東西要給你。M: You do?你做了什么？W: Yes, but it will have to wait until later.嗯，但是得等到以后再說。M: Oh, I cant wait. Tell me what it is.哦，我等不及了。告訴我是什么。W: Can you guess what it is?你能猜出那是什么嗎？M: Could you give me a hint?你能給我一個提示嗎？W: We

24、 went there 6 months ago.我們6個月前去過那里。M: Oh, you mean Alfredos.哦，你是說阿爾弗雷多的。W: Yes, are you excited? You said you really like the food there.是的，你興奮嗎？你說過你真的喜歡那里的食物。M: Yes, thats true. I also remember the dessert. Do you?是的，沒錯。我還記得甜點。你嗎？W: Yes, but lets not talk about that now. Lets not ruin the surprise.是的，但現(xiàn)在不再談了。我們不要破壞這個驚喜。 He remembered that today is their anniversary.他記得今天是他們的周年紀(jì)念日。They arent going to talk about the dessert.他們不打算談?wù)撎瘘c。Dialogue Fine DiningW: That restaurant looks nice.那家餐廳看起來不錯。M: Yes, but it loo