UNIT 4 Lessons 25～32 Look into Science!
第四单元 第25~32课 观察科学！
You Will Learn ,Functions
你将学到,实际应用,
Certainty and Uncertainty
确定及不确定
Sequence .Grammar .
顺序.语法.
The Simple Future Tense .Structures .
一般将来时.固定结构.
fill/cover... with .
用……把……装满/盖住.
right side up .
正面朝上.
take away .
取走.
turn... upside down .
把……翻转.
use up .
用完.
Lesson 25: Let's Do an Experiment!
第二十五课：让我们做一个实验吧！
THINK ABOUT IT! Do you like to do experiments?
想一想 你喜欢做实验吗？
What experiments have you done?
你作过什么样的实验？
What experiment is Brian going to do?
布赖恩要做的是什么实验？
What's Danny's theory about what will happen?
对于将要发生的事，丹尼的理论是什么？
One Experiment, Two Theories
一个试验，两个理论
A "theory" is an idea.
一个“理论”是一个观点。
A theory predicts what will happen.
理论预见将会发生什么。
An experiment shows what happens.
试验展示发生了什么。
Did you read about this experiment, Danny?
丹尼，你读过关于这个实验的事吗？
I fill a jar with water.
我在广口瓶中加了水。
I cover the top with a piece of cardboard.
我用一片纸板盖住了顶部。
Then, I turn the jar upside down.
之后，我把广口瓶倒置。
Guess what will happen! I'm not sure.
猜一猜会发生什么事！我不确定。
I think the floor will get wet.
我想地板会湿的。
Maybe you should do this experiment outside, Brian!
或许你应该在户外做这个实验，布赖恩！
No, we can do it inside.
不，我们可以在里面做。
I'm sure the floor won't get wet.
我确信地板不会湿的。
Why not?
为什么不会湿呢？
The cardboard can't keep the water in the jar!
纸板挡不住广口瓶中的水！
Let's do the experiment and see what happens.
让我们做这个实验看看会发生什么事。
Brian has one theory, and Danny has another.
布赖恩有一个理论，而丹尼有另一个。
We can prove who's right.
我们可以证明谁说得对。
Great!
太棒了！
We'll do the experiment and observe what will happen.
我们将做这个实验，并观察会发生什么事。
That's called the scientific method.
这被称为科学方法。
Learning Tips
学习贴士
Observe is another way of saying watch carefully.
“Observe”与“watch carefully”表达的意义相同。
LET'S DO IT!
做一做!
If Brian does the experiment, will the floor get wet?
如果布赖恩做实验，地板会湿么？
Imagine what will happen. With a partner, make up a dialogue.
想象一下会发生什么？和一个伙伴做对话。