L3-U3-P1-1 Listening : Life & Conditions 1生活和條件

There are many forms of life on Earth, including human beings. 地球上有許多生命形式，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. 有些生命形式生活在水環(huán)境中，如海洋。

Other forms of life can be found in very dry areas like deserts. 其他形式的生命可以在非常干燥的地區(qū)，如沙漠中找到。

However, for any form of life to exist, conditions must be right. 然而，任何形式的生命存在，都必須有合適的條件。

When conditions are not right, that form of life will become extinct. 當條件不合適時，那種生命形式就會滅絕。

To become extinct means to die out completely. 滅絕意味著完全滅絕。

Conditions must be right for life to exist. 生命必須有適宜的生存條件。

Millions of years ago there were forms of life that no longer exist.數(shù)百萬年前，一些生命形式已經(jīng)不復存在。

When conditions changed, these forms of life dead out. 當條件改變時，這些生物就會滅絕。

One extinction event happened about 250 million years ago. 一次滅絕事件發(fā)生在大約2億5千萬年前。

This was the largest extinction event of all time.這是有史以來最大的滅絕事件。

Many forms of life became extinct. 許多生命形式已經(jīng)滅絕。

96% of all life in the oceans died out. 96%的海洋生物都滅絕了。

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.這一事件發(fā)生了幾百萬年。

The causes of this extinction event are still unknown. 這一滅絕事件的原因仍然未知。

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. 一些科學家認為有幾個原因。

They believe that a series of events caused the extinctions. 他們認為一系列的事件導致了物種滅絕。

Scientists are working to better understand what really happened. 科學家們正在努力更好地了解到底發(fā)生了什么。

L3-U3-P1-2 Listening : Life &Conditions 2

In modern times we humans face changing conditions. 在現(xiàn)代，我們人類面臨著不斷變化的環(huán)境。

For humans to live, we need clean air and clean water. 為了人類的生存，我們需要干凈的空氣和干凈的水。

Pollution is now a growing problem around the world. 污染現(xiàn)在是世界上一個日益嚴重的問題。

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. 受污染的水污染了我們的食物供應。

As a result, we never know which foods are safe to eat. 因此，我們永遠不知道哪些食物是安全的。

Human beings cannot 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。

To be in a comfortable range means to be neither too hot nor too cold. 在一個舒適的范圍內是指既不太熱也不太冷。

With global warming, 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. 隨著氣溫上升，極地冰蓋將融化。

As the polar icecaps melt, ocean levels will rise. 隨著極地冰蓋的融化，海平面將上升。

Areas of some countries will soon be under water. 一些國家的地區(qū)很快就會被淹沒。

People will be forced to relocate from flooded areas. 人們將被迫從水災地區(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。

It’s difficult to predict what’s going to happen. 很難預測會發(fā)生什么。

The entire ecosystem that we depend on is changing. 我們賴以生存的整個生態(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轉的。

Irreversible changes cannot be undone. 無法撤消不可逆的更改。

Let’s 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，我們就可以做出更好的選擇做什么。

We can face the challenges of pollution and global warming.我們可以面對污染和全球變暖的挑戰(zhàn)。

We need to do this before it’s too late. 我們得趁現(xiàn)在還來得及。

This planet Earth is our only home and we need to protect it. 地球是我們唯一的家園，我們需要保護它。

L3-U3-P1-3 Vocabulary : Forms of Life生命形式

Mammals are covered by hair or fur, have a backbone and warm-blooded. 哺乳動物被毛發(fā)或皮毛覆蓋，有脊椎和溫血動物。

All female mammals produce milk for their young. 所有的雌性哺乳動物都為幼崽產(chǎn)奶。

Reptiles are covered by scales and include snakes, lizards and turtles. 爬行動物身上覆蓋著鱗片，包括蛇、蜥蜴和烏龜。

Reptiles have a backbone and are cold-blooded, which means they often rely on the external sources of heat. 爬行動物有脊椎，是冷血動物，這意味著它們經(jīng)常依賴外部熱源。

Birds are covered by feathers and are warm-blooded. 鳥類全身有羽毛，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，而且許多鳥類遷徙距離很遠。

Most insects such as ants and bees have a small, 3-part

body with 3 pairs of legs. 大多數(shù)昆蟲，如螞蟻和蜜蜂，有一個小的，三部分的身體和三對腿。

Some insects, like mosquitoes, spread diseases that cause the deaths of many humans. 一些昆蟲，如蚊子，傳播導致許多人死亡的疾病。

Unlike animals, plants get the energy that they need from the sun. 與動物不同的是，植物從太陽那里獲得它們所需要的能量。

Plants convert light energy, along with carbon-dioxide and water, into chemical energy. 植物將光能、二氧化碳和水轉化為化學能。

L3-U3-P1-4 Vocabulary : Instruments儀器

Scales and rulers are used to measure weight and length. 天平和尺子用來測量重量和長度。

Units 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和非常小的物體。

Telescopes are used by astronomers, and microscopes are used by biologists and doctors. 天文學家使用望遠鏡，生物學家和醫(yī)生使用顯微鏡。

These appliances are used in the kitchens of almost every home. 這些電器幾乎家家戶戶的廚房都在使用。

Stoves are used to heat food, and refrigerators are used to keep foods cool or cold. 爐子用來加熱食物，冰箱用來保持食物低溫。

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 used to pound in nails and screwdrivers are used to turn a screw. 錘子用來敲釘子，螺絲刀用來轉動螺絲。

L3-U3-P1-5 Dialogue : Dating Anniversary 約會周年紀念日

W: Do you know what day it is today? 你知道今天是星期幾嗎？

M: What do you mean? 你什么意思？Is it a special day?今天特別嗎？

W:?Oh, so you don’t remember. 哦，所以你不記得了。

M:?Remember what? 記得什么？What’s so special? 有什么特別的？

W:?It’s our anniversary. 天是我們的周年紀念日。

We?started dating a year ago today. 今我們一年前的今天開始約會。

M:?Oh, really? Sorry! 哦,是嗎? 對不起!

M: Just a minute. 等一下。What do you

think this is? 你覺得這是什么?

W:?Oh, it’s a necklace. 哦，是條項鏈。

M:?Do you like it? 你喜歡嗎？

W:?Yes, I do. 是的,我喜歡。

It’s lovely, especially?the red heart. 它很可愛，尤其是那顆紅心。

May I put it on?? 我可以戴上嗎?

M:?No, let me do it. 不，讓我來。

W:?So you did remember. 這么說你記得了。

M:?Of course I remember it. 我當然記得。

It’s a very special day for both of us. 這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? 是嗎？

W:?Yes, but it will have to wait until later. 是的，但是得等一會兒。

M:?Oh, I can’t wait. 哦，我都等不及了。Tell me what it is.告訴我是什么。

W:?Can you guess what it is? 你能猜到是什么嗎?

M:?Could you give me a hint? 你能給我個提示嗎?

W:?We went there six months ago. 我們六個月前去過那里。

M:?Oh, you mean Alfredos. 哦，你是說阿爾弗雷多斯。

W:?Yes, aren’t you excited? 是的，你不興奮嗎？

You said you really like the food there.你說你很喜歡那里的食物。

M:?Yes, that’s true. 是的,沒錯。

I also remember their dessert, do you? 我還記得他們的甜點，你記得嗎?

W: Yes, but let’s not talk about that now. 是的，但我們現(xiàn)在先別談這個。

Let’s not ruin the surprise.我們不要破壞這個驚喜。

L3-U3-P1-6?Dialogue : Fine Dining美食

W: That restaurant looks nice. 那家餐館看起來不錯。

M: Yes, but it looks expensive. 是的，但是看起來很貴。

W:?Let’s go in and look at the menu. 我們進去看看菜單吧。

W:?Wow, the menu looks great, especially the fish. 哇，菜單看起來真棒，尤其是魚。

(She likes the choices especially the fish.) 她喜歡食物的選擇，尤其是魚。

M:?Yes, it looks good, but look at those prices. 是的，看起來不錯，但是看看那些價格。

M: Let’s try somewhere else. 我們去別的地方試試吧。

W: Sometimes it’s okay to spend a little money. 有時候花點錢也沒關系。

M:?Yes, but these prices are bit too high, don’t you think? 是的，但是這些價格有點太高了，你不覺得嗎？

W: Yes, they are a bit high. 是的，有點高。

But don’t you think I’m worth it? 但你不覺得我值得嗎？

Let’s enjoy ourselves. 讓我們盡情享受吧。

M: OK, if you put it that way. 好吧，如果你這么說的話。

Let’s see if we can get a table.我們看看能不能訂到位子。

W: I’m glad you have your credit card. 我很高興你有信用卡。

I sure hope the food is good. 我真希望食物好吃

W:?Stop worrying. 別擔心了。Let’s just enjoy.讓我們享受一下.

L3-U2-P1-7 Listening

L3-U2-P1-8 Vocabulary

L3-U2-P1-9 Speaking