[ti:UNIT 4 Look into Science! Lesson 32: Unit Review]
[0:00.000]UNIT 4
[0:01.873]Look into Science!
[0:04.086]Lesson 32
[0:05.447]Unit Review
[0:07.036]Ⅰ. Building Your Vocabulary
[0:10.383]A. Fill in each blank with the proper word or phrase from the list. Use the correct form.
[0:17.646]discover 发现
[0:19.121]taste 尝起来
[0:20.168]examine 检查
[0:21.566]hide 隐藏
[0:22.652]prove 证明
[0:23.713]light 点燃
[0:25.232]B. Find the proper words in this unit.
[0:29.645]C. Fill in the blank with the proper word. The first letter is given.
[0:35.602]D. Complete the passage with the proper words or phrases.
[0:40.643]Ⅱ. Grammar in Use
[0:43.681]Fill in the blanks with the words in brackets in their proper tenses.
[0:49.011]Ⅲ. Speaking the language
[0:52.363]Complete the following dialogue.
[0:55.378]Ⅳ. Putting It All Together
[0:58.730]A. Reading comprehension
[1:01.769]Water, Water, Everywhere 水，水，到处都是
[1:04.832]Most things have three states: solid, liquid and gas. 大多数物质有三种形态：固态、液态和气态。
[1:11.078]We can change a solid into a liquid and a liquid into a gas. 固态可以转化成液态，液态可以转化成气态。
[1:16.625]It doesn't matter which of the three states a thing is in, it is still the same thing. 无论这种物质是以什么形态存在，其本质相同。
[1:23.450]Let's think about water to see how this works. 我们以水为例来看这个过程。
[1:27.501]Water is one of those things that exists in three states. 水是以这三种形态存在的物质之一。
[1:32.445]Liquid water is found in many places. 液态水在许多地方都可以看见。
[1:36.111]You can see liquid water coming out of the tap or running in a river. 你可以看到液态水从龙头里流出，在江河里流淌。
[1:41.875]You can see water falling from the sky as rain, snow, or ice. 你可以看到水以雨、雪、冰的形态从空中落下。
[1:47.166]Ice and snow are examples of water in the solid state. 冰和雪都属于固态的水。
[1:52.045]We can change liquid water into solid ice and back again into liquid water. 液态水可以转化为固态的冰，反之亦然。
[1:58.456]We can also turn water into a gas. 水还可以转化为气态。
[2:02.201]In winter, put your wet clothes near the fire, then you can see gas rising from the wet clothes. 冬季，把湿衣服挂在火附近，你就会看到湿衣服上有气体溢出。
[2:10.428]Why? Water changes into a gas. 为什么呢？因为水转化成了气体。
[2:14.456]When you breathe on a mirror, you can see little drops of water on the mirror. 在镜子上呵一口气，你会看到镜子上有小水滴。
[2:19.733]What happens? 发生了什么呢？
[2:21.208]Gas turns into water. 水汽变成了水。
[2:23.251]Is the statement true (T) or false (F)?
[2:27.790]B. Writing exercise
[2:30.853]You did some experiments in this unit.
[2:33.690]Now try this one: can you make an egg stand upright?
[2:38.229]Try it and write down what happens.
[2:41.009]Do you know? 你知道吗？
[2:42.371]Certainty and Uncertainty 确定及不确定
[2:45.038]I'm sure/not sure. 我确定/不确定。
[2:47.591]I'm sure/not sure (that/which/why/whether... )... 我确定/不确定（that/which/why/whether引导的从句）……
[2:54.286]Perhaps I'll work in the space program. 或许我会为太空计划工作。
[2:57.463]Maybe you should do this experiment outside. 或许你该在外面做这个实验。
[3:01.151]Maybe you used glue! 或许你用了胶水！
[3:04.102]Sequence 顺序
[3:05.634]First, Brian fills the jar with water and puts the cardboard on top of it. 首先，布赖恩在罐子里注满了水，并把硬纸片放在顶部。
[3:11.364]Then, he puts his hand on the cardboard and turns the jar upside down. 然后，他用手按住硬纸片，把罐子翻转了过来。
[3:16.754]Next, he holds the jar above Danny's head. 接着，他把罐子拿到丹尼的头上方。
[3:20.045]Finally, he takes his hand off the cardboard. 最后，他把手拿开。
[3:24.073]The Simple Future Tense 一般将来时
[3:26.513]shall
[3:27.705]I shall wear shorts tomorrow. 明天我要穿短裤。
[3:30.825]Shall we have any classes tomorrow? 明天我们有课吗？
[3:34.116]will
[3:35.400]There will be some showers this afternoon. 下午有阵雨。
[3:38.577]I'll tell them my theory. 我将把我的理论告诉他们。
[3:41.471]Will you be free next week? 下周你有空吗？
[3:43.740]I'm sure I won't lose my way. 我确定我不会迷路的。
[3:47.088]be going to
[3:49.017]Is Danny going to hide an egg in his mouth? 丹尼要把一只蛋藏在嘴巴里吗？
[3:53.329]We are going to do a science experiment in class tomorrow. 明天我们上课时要做一个科学实验。
[3:58.095]I'm not going to get wet. 我不会淋湿的。
[4:00.648]It's going to rain. 要下雨了。
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