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沪教版（五四学制）八年级上册Unit1 Water暑期知识点预习
一、根据词性要求写出单词
1. 名词：水循环 ______ 2. 动词：蒸发 ______
3. 形容词：液体的 ______ 4. 名词：资源 ______
5. 动词：保护 ______ 6. 形容词：必需的 ______
7. 名词：温度 ______ 8. 动词：凝结 ______
9. 名词：状态 ______ 10. 动词：煮沸 ______
二、根据汉语写出词组
1. 以三种状态 ______ 2. 水资源 ______
3. 节约用水 ______ 4. 变成蒸汽 ______
5. 在...温度下 ______ 6. 照顾 ______
7. 用完 ______ 8. 由...组成 ______
9. 保护...免受... ______ 10. 对...至关重要 ______
11. 水分子 ______ 12. 饮用水 ______
13. 浪费水 ______ 14. 水污染 ______
15. 淡水 ______ 16. 水蒸气 ______
17. 冰点 ______ 18. 沸点 ______
19. 水处理 ______ 20. 水循环 ______
三、根据音标补全句子
1. Water________ / k s sts/ in three states.
2. When water is heated, it_________ / v p re ts/.
3. At 0℃, water________ /fri z z/.
4. We should________ /k n s v/ water.
5. The water________ / sa kl/ is important to life.
四、根据中文提示完成英语句子
1. 水被称为生命之源。
Water ______ the source of life.
2. 我们应该节约用水。
We ______ save water.
3. 水在100℃时沸腾。
Water ______ at 100℃.
4. 地球表面大部分被水覆盖。
Most of the earth's surface ______ by water.
5. 水可以从一种状态变成另一种状态。
Water can ______ one state to another.
五、将下列单词填入空格
[boils, essential, cycle, states, evaporates, freezes, conservation, liquid, solid, gas]
Water exists in three (1)______: (2)______, (3)______ and (4)______. At 0℃, water (5)______ into ice. When heated to 100℃, it (6)______. Water (7)______ from rivers and seas into the air. The water (8)______ is nature's way of recycling water. Water is (9)______ to all living things. We should pay attention to water (10)______.
六、完形填空
Water is the most important (1)______ on Earth. All living things need water to (2)______. Water covers about 71% of the Earth's (3)______.
Water exists in three (4)______: solid, liquid and gas. When water (5)______ below 0℃, it becomes ice. When it is (6)______ to 100℃, it turns into steam. The (7)______ of water from one state to another is called the water (8)______.
We use water in many (9)______. We drink it, wash with it, and use it to (10)______ plants. However, many people (11)______ water. We must (12)______ water because it is not (13)______. We can save water by (14)______ off taps and fixing (15)______ pipes.
七、阅读理解
A. 阅读判断（T/F）
Water is essential for life. The human body is about 60% water. We can live without food for weeks, but only a few days without water.
Water exists in nature in three states. Ice is water in solid state. Liquid water is in rivers, lakes and oceans. Water vapor is water in gaseous state. The water cycle moves water between these states.
Many countries face water shortages. We must use water wisely. Simple actions like turning off the tap while brushing teeth can save water.
（ ）1. The human body is about 60% water.
（ ）2. People can live longer without water than without food.
（ ）3. Water vapor is water in solid state.
（ ）4. All countries have enough water.
（ ）5. Turning off taps can help save water.
B. 阅读选择
The water cycle is a continuous process. First, the sun heats water in oceans, lakes and rivers. The water evaporates and rises into the air as vapor. When the vapor cools, it forms clouds. This is called condensation. When the clouds get heavy, the water falls as rain or snow. This is precipitation. The water then flows back into rivers and oceans, and the cycle begins again.
The water cycle is important because it provides fresh water for plants and animals. It also helps regulate Earth's temperature. Without the water cycle, life on Earth would be impossible.
（ ）6. What causes water to evaporate
A. The moon B. The sun C. The wind D. The rain
（ ）7. What is the process of water vapor turning into clouds called
A.Evaporation B.Condensation C.Precipitation D. Collection
（ ）8. Why is the water cycle important
A. It makes the Earth warmer
B. It provides fresh water
C. It creates oceans
D. It produces electricity
（ ）9. What would happen without the water cycle
A. There would be more water
B. Life would be impossible
C. The Earth would be colder
D. Nothing would change
（ ）10. What is the main idea of this passage
A. How to save water
B. The process of the water cycle
C. Different states of water
D. The importance of oceans
答案
一、单词
1. water cycle2. evaporate3. liquid4. resource5. conserve
6. essential7. temperature8. condense9. state10. boil
二、词组
1. in three states2. water resources3. save water
4. turn into steam5. at a temperature of
6. take care of7. run out of8. make up
9. protect...from...10. be essential to11. water molecule
12. drinking water13. waste water14. water pollution
15.fresh water16. water vapor17. freezing point18. boiling point19. water treatment20. water cycle
三、音标
1. exists2. evaporates3. freezes4. conserve5. cycle
四、完成句子
1. is called2. should3. boils4. is covered5. change from
五、选词填空
1.states2. solid3. liquid4. gas5. freezes6. boils7. evaporates
8. cycle9. essential10. conservation
六、完形填空
1. resource2. survive3. surface4. states5. cools
6. heated7. change8. cycle9. ways10. grow
11. waste12. save13. unlimited14. turning15. leaking
七、阅读理解
A:1. T 2. F 3. F 4. F 5. T
B:6. B 7. B 8. B 9. B 10. B

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