L3-U2-P4-1 Listening : Overview of Earth地球概况
Earth is where we all live. 地球是我们生活的地方。
It is our home in the solar system. 这是我们在太阳系的家。
There is no other place for us to live. 我们没有别的地方住了。
Earth isn’t just any planet. 地球不仅仅是一个行星。
It’s a very special place. 它这是一个非常特别的地方。
It’s special because we depend on it for many things. 它很特别，因为我们依赖它做很多事情。
Because of its importance, we need to take care of it. 因为它的重要性，我们需要照顾它。
We depend on the Earth for its air, its water and many of its natural resources. 我们依靠地球获取空气、水和许多自然资源。
Natural resources, such as coal and oil, give us energy. 煤炭和石油等自然资源为我们提供能源。
Other natural resources we depend on include forests and soil. 我们赖以生存的其他自然资源包括森林和土壤。
Forests provide clean air and wood for building houses. 森林提供清洁的空气和建造房屋所需的木材。
Soil is needed to grow plants and keep them healthy. 种植植物和保持它们健康需要土壤。
We need to take care of these resources and not waste them.我们需要照顾好这些资源，不要浪费它们。
The Earth is a large, rotating sphere, about 4.5 billion
years old. 地球是一个巨大的旋转球体，大约有45亿年的历史。
The equator, which divides the Earth into two hemispheres, is about 40,000 kilometers long. 把地球分成两个半球的赤道长约40000公里。
The Earth's diameter is 12,756 kilometers. 地球的直径是12756公里。
Its radius is half that, or 6,378 kilometers. 它的半径是它的一半，或者说6378千米。
The radius is the distance from the Earth’s center to its surface. 半径是地心到地表的距离。
Most of the Earth’s surface is covered by water. 大部分的地球表面被水覆盖着。
The rest of the Earth’s surface is land. 地球表面的其余部分是陆地。
Just above the Earth's surface is the atmosphere. 就在地球表面之上是大气层。
The atmosphere is a layer of gases about 500 kilometers thick. 大气层是一层厚约500公里的气体。
These gases include Oxygen, Nitrogen and Carbon Dioxide. 这些气体包括氧气、氮气和二氧化碳。
This mixture of gases is the air that we breathe. 这种混合气体就是我们呼吸的空气。
As we move above the Earth’s surface, the air gets thinner.当我们在地球表面上方移动时，空气变稀薄了。
At high altitudes, the air is too thin to breathe. 在高海拔地区，空气太稀薄，无法呼吸。
At the edge of the atmosphere is space. 大气层的边缘是太空。
There is no air at all in space. 太空中根本没有空气。
L3-U2-P4-2 Listening : Water On Earth地球上的水
Most of the Earth’s water is in the oceans. 地球上大部分的水都在海洋里。
The two largest oceans are the Pacific and Atlantic Oceans.两个最大的海洋是太平洋和大西洋。
Unfortunately, we can’t drink ocean water. 不幸的是，我们不能喝海水。
This is because ocean water has too much salt. 这是因为海水含盐量过高。
Fortunately, there is also water in lakes and rivers. 幸运的是，湖泊和河流中也有水。
This water isn’t salty, so we can drink it. 这水不咸，所以我们可以喝。
Only about 2% of the world’s water is fresh water. 世界上只有大约2%的水是淡水。
Without fresh drinking water, we can’t live. 没有新鲜的饮用水，我们就不能生存。
A person can’t live for more than a few days without water.没有水一个人活不了几天。
Rivers are important. 河流是很重要的。
Most rivers begin in mountains and end in the oceans. 大多数河流起于山脉，止于海洋。
The water flows from high ground to low ground. 水从高地流向低地。
At first, rivers are small and are called creeks orstreams. 起初，河流很小，被称为小溪或溪流。
As water enters from other streams, a river grows. 当水从其他溪流流入时，河流就生长了。
Some rivers become very large and long. 有些河流变得又大又长。
The longest river in the world is the Nile River, in Africa. 世界上最长的河流是非洲的尼罗河。
It’s almost 6,500 kilometers long. 差不多有6500公里长。
As for water volume, the Amazon is the largest river. 就水量而言，亚马逊河是最大的河流。
The volume of water flowing through it per second is more than in any other river. 每秒流经它的水量比任何其他河流都要大。
Another use of rivers is for energy. 河流的另一个用途是能源。
The energy of falling water is used to produce electricity.落水的能量被用来发电。
This use of water supplies over 20% of the world’s electricity. 这种用水供应了世界20%以上的电力。
Rivers are also important for agriculture. 河流对农业也很重要。
Without water, farmers cannot grow food. 没有水，农民就不能种植粮食。
And of course rivers can be used for transportation. 当然，河流也可以用来运输。
River boats are used to carry things to inland cities or lakes. 内河船用来把东西运到内陆城市或湖泊。
L3-U2-P4-3 Vocabulary : Things We Enjoy Doing我们喜欢做的事情
This man goes running 5 days a week if the weather is good.如果天气好的话，这个人一周跑5天。
On the weekends he runs 10 kilometers unless the weather is bad.除非天气不好，否则周末他会跑10公里。
This woman really enjoys reading, especially works of fiction. 这个女人真的很喜欢读书，尤其是小说。
She has read hundreds of books. 她读过几百本书。
This young couple enjoys watching old movies such as Titanic. 这对年轻夫妇喜欢看《泰坦尼克号》这样的老电影。
They both cried when it sank and many people went down with the ship. 当船沉没，许多人随船沉没时，他们都哭了。
These young boys enjoy playing sports on the weekend. 些年轻的男孩喜欢在周末做运动。
Sometimes they play basketball and sometimes they play football.他们有时打篮球，有时踢足球。
This young man eats too many sweets, so he is overweight. 这个年轻人吃太多甜食，所以他超重了。
He needs to eat fewer sweets and exercise more.他需要少吃甜食，多运动。
L3-U2-P4-4 Vocabulary : Continents大洲
Here are 6 of the Earth's 7 continents: 以下是地球7大洲中的6个:
Asia is the largest continent both in land and in population. 亚洲是陆地和人口最大的州。
Asia covers 30% of the Earth's land area.亚洲占地球陆地面积的30%。
Africa is the second largest continent. 非洲是第二大洲。
Of all the continents, Africa has the youngest population.在所有大陆中，非洲拥有最年轻的人口。
Europe is to the west of Asia and is the second smallest continent. 欧洲在亚洲以西，是世界上第二小的大陆。
Europe is to the birthplace of classical music and some of the world's greatest art and literature.欧洲是古典音乐和一些世界上最伟大的艺术和文学的诞生地。
North and South America are bordered on the west by the
Pacific Ocean and on the east by the Atlantic Ocean. 北美和南美西部与太平洋接壤，东部与大西洋接壤。
The first human beings to live in the Americas came from
Asia more than 15,000 years ago. 1万5千多年前，第一批生活在美洲的人类来自亚洲。
Australia is the world's smallest continent. 澳大利亚是世界上最小的大陆。
Australia is surrounded by the Indian and Pacific oceans.澳大利亚被印度洋和太平洋所环绕。
L3-U2-P4-5 Dialogue : A Driverless Car无人驾驶的汽车
A: Hey! Look at that. 嘿！看那个。
B: Look at what? 看什么?
A: Look out the window. 看看窗外。
Do you see the young lady in the red dress? 你看见那个穿红衣服的年轻女士了吗?
B: Yeah, I see her. 是的，我看到她了。
Wow! she’s beautiful and hot.哇!她既漂亮又性感。
A: Look at the way she walks. 看她走路的样子。
B: Yes, now look behind her. 是的，现在看看她身后。
Look in the car that’s following her.看看跟着她的那辆车。
A: I’d rather look at the young lady. 我宁愿看着这位年轻的女士。
A: So what’s so special about the car? 那这辆车有什么特别之处？
B: Look at the driver. 看看司机。Do you see one? 你看到了吗？
A: No, I don’t. 我没有。There isn’t anybody driving the car.没有人开车。
B: Right, it's one of those new driverless cars. 对，是那种新型无人驾驶汽车。
A: Maybe it’s the woman’s car. 也许是那个女人的车。
It’s following her.它跟着她呢。
B: I don’t know. Maybe you’re right. 我不知道。也许你是对的。
A: Now, that’s a smart car. 现在，那是一辆聪明的车。Maybe I’ll go outside and follow her too.也许我也会出去跟着她。
B: Hey, get back to work! 嘿，回去工作吧！
L3-U2-P4-6 Dialogue : Calling Customer Service呼叫客户服务 （致电客服）
W: Thank you for calling our Customer Support. 感谢您致电我们的客户支持。
Please listen to the following menu to help us direct yourcall.请听下面的菜单，帮助我们指引您的通话方向。
Please say or press #1 to pay your bill. 请说或按1付账。Please say or press 2 to upgrade your service plan.请说或按2升级您的服务计划。
Please say or press #3 to report a technical problem. 请说出或按#3报告技术问题。
Please say or press #4 if you want to hear these choices again.如果您想再次听到这些选择，请说或按#4。
M: I don’t want any of these choices. 我不想要这些选择中的任何一个。
W: You may also go to our website for help. 您也可以访问我们的网站寻求帮助。
M: I went to your website but it didn’t help. 我去了你的网站，但没有帮助。
I want to speak to a human being. 我想和一个人说话。
W: Your business is very important to us. 您的业务对我们非常重要。
W: Please say or press 5 or hang up to end this call. 请说或按5或挂断以结束此通话。
M:None of these! 这些都不是！I want a human being. 我想要一个人。
I want to cancel my service.我想取消我的服务。
W: Please wait while we connect you to a service representative. 请稍候，我们正在为您接通服务代表。
M: Finally, is this what they call customer service? 总算…这就是他们所说的客户服务？
W: To assist our representative, please say your first and last name. 为了协助我们的代表，请说出您的名字和姓氏。
M: Tom Smith. 汤姆·史密斯。
W: We heard Tom, Smith. 我们听到汤姆，史密斯。
If this is correct, say or press #1. 如果正确，说出或按1。
If this is not correct, say or press #2. 如果不正确，说出或按#2。
M: #1. W: Thank you. 非常感谢。
For security purposes, what was your father’s middle name? 为了安全起见，你父亲的中间名是什么？
M: He didn’t have a middle name. 他没有中间名。W: Thank you. 非常感谢。
A customer service representative will be with you shortly.客户服务代表很快就会来。
W: I’m sorry but our offices are closed. 对不起，我们的办公室关门了。
Please call back during business hours.请在营业时间再打来。
Our business offices are open, Monday to Friday, from 8 am until 6 pm. 我们的办公室星期一到星期五从早上8点到下午6点都是开放的。
Thank you for calling. 感谢您的来电。
