Lesson 9
Listen and say
Mum, what's the date today?
妈妈, 今天是几号?
It's April 22nd. It's World Earth Day.
今天是四月二十二日. 是世界地球日.
What's it for?
那是干什么的?
It tells people to protect the environment.
它告诉人们要保护环境。
What can we do then?
我们能做什么呢？
Well, that's easy. How does your dad go to workevery day?
很简单 。你爸爸平时是怎么上班的？
By car. Maybe he can go by bus or by subway.
开车 。也许他可以坐公交车或者地铁。
All right, I'll try. And we should stop using plastic bags.
好的 。我会试试的 。还有我们要停止使用塑料袋。
Yes, let's, and Guoguo, don't litter in public places.
是的 ，果果。 我们别在公共场所乱扔垃圾。
Sure, Mum. I never do.
当然了， 妈妈 。我从来不这样做。
Good girl! Now look around and answer my question:
好孩子！ 现在四周看一下然后回答我的问题：
what do we need to keep the lawn clean and tidy?
我们要怎么做来保持草坪的干净整洁呢？
I think we need more trashcans by the roadside. -Bingo!
我认为我们需要在路边摆放更多的垃圾桶 -答对了！
Read and write
litter date clean stop protect
What's the date today?It is April 22ed World Earth Day. There are many things we can do to protect the environment.We can go to school or work by bus or by bike.If the place is not far,we can go on foot.We should stop using plastic bags,and we should be careful not to litter so that we can keep our city clean and tidy.
今天是几号？四月是世界地球日。我们可以做很多事情来保护环境。我们可以坐公共汽车或骑自行车去上学或工作。如果这个地方不远，我们可以步行去。我们应该停止使用塑料袋，并且我们应该小心不要乱扔垃圾，这样我们就可以保持我们的城市干净整洁。
Lesson 10
Listen and say
Let's print your homework first, Yangyang.
我们先来打印你的家庭作业吧 。阳阳。
Thank you! But, wait a minute. Can I print on bothsides of the paper, please?
谢谢 ！但先等一等 。我能用双面打印吗？
OK, I always print that way.
当然 ，我都是那样打印的。
It's a good way to save paper, and to save trees.
这是一个节约纸张的好办法， 还能拯救树木。
Yes. Let's live a low-carbon life.
是的 。让我们一起过低碳生活。
What does that mean?
那是什么意思？
Well, for example, don't leave the water running when you're brushing your teeth.
比如说。 当你在刷牙的时候不要让水龙头的水一起放着。
And also remember to turn off the TV when you aren't watching.
还有当你不看电视的时候要记得关掉。
You're right.
说得对。
Read and write
save remember print paper
Lingling and Yangyang both need to print their homework.They want to help save paper and trees,so they print on both sides of thepaper .They will remember to turn off the TV when they are not watching.
玲玲和阳阳都需要打印他们的家庭作业。他们想帮助节约纸张和树木，所以他们打印在纸的两面。他们会记得关掉电视，当他们不在看的时候。
Lesson 11
Listen and say
Come on, you boys. Are you tired?
来吧 ，男生们 。你们累了吗？
No we're not. It's just too hot today. I'm thirsty.
我们不累， 只是今天太热了 。我渴了。
I need to use the toilet.
我需要去下洗手间。
OK, go ahead, please. Lingling and I will rest under this tree. What a nice, big tree!
去吧， 我和玲玲就在这棵树下休息。 多么漂亮的一棵大树啊！
Look at the birds in the branches.
看看枝头的鸟儿。
Wow! There's also a little squirrel.
哇 ！那里还有一只小松鼠。
Where is it? Ah, there it is, behind that big branch!
在哪里？ 噢 ，在这里呢 ，大树干的后面！
What a cute thing! It has a big tail.
多可爱啊！ 它还有一个大尾巴。
Shhh! Please don't shout. It'll be scared and run away.
嘘！ 别喊 。它会害怕而跑掉的。
Oh, I'm sorry. We should be friendly to it.
对不起 ，我们应该友好地对待它。
Read and write
tired toilet thirsty friendly under
Mike, Lingling,and Maomao are climbing up a hill.They are not tired ,but they stop half way.Mike is thirsty and Maomao needs to use the toilet .They want to rest under a big tree. In the branches of the tree,they see a cute squirrel with a big tail. They want to be friendly to this little animal so they stay quiet.
迈克、玲玲和毛毛爬上了一座小山，他们不累，但是他们停在了半路，迈克渴了，毛毛需要用马桶，他们想在一棵大树下休息。在树枝上，他们看到一只可爱的松鼠，尾巴很大。他们想对这只小动物友好，所以他们保持安静。
Lesson 12
Can you read ?
There are many kinds of energy ,including light,heat,electricity,and sound. One kind of energy can also change into another.
有多种能量，包括光、热、电和声音。一种能量也可以变成另一种能量。
Solar energy 太阳能
Heat from the sun warms the air,land,and sea. Plants use the energy in sunlight to make their own food. We can use solar panels to change sunlight into electricity.
来自太阳的热量温暖了空气、陆地和海洋。植物利用阳光中的能量来制造它们自己的食物。我们可以用太阳能电池板把阳光变成电。
Motion energy 运动能量
When things move very fast such as the wind,they generate a lot of energy.A wind turbine has blades. The blades turn in the wind to drive a generator to make electricity.
当物体移动很快，比如风，它们产生大量的能量。风力涡轮机有叶片。叶片在风中旋转以驱动发电机发电。
Fuel energy 燃料能源
Fuels are rich in energy .Coal,oil,and gas are fuels.We burn them to make light and heat. Fuels come from the remains of dead plants and animals.
燃料含有丰富的能量，煤、石油和天然气都是燃料，我们燃烧它们来制造光和热。燃料来自死去的动植物的残骸。