人教课标版B9 Unit 4 Exploring Plants Workbook-Listening（课件24张）
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| 名称 | 人教课标版B9 Unit 4 Exploring Plants Workbook-Listening（课件24张） |  | |
| 格式 | zip | ||
| 文件大小 | 2.0MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2015-10-12 22:59:42 | ||
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课件24张PPT。人教课标
高三 选修 9
Unit 4on WorkbookUnit 4
Exploring plantsListening Listeningon Page 75a tropical rainforesthas been cut downPre-listening1. In which parts of the world would you find tropical rainforests?
Tropical rainforests occur in three major regions: Asia, Africa and Central and South America.2. Why do you think rainforests are being cut down?
As populations increase, people need more land to live on. There are also mining companies which destroy forests in their search for minerals.3. Why do you think tropical rainforests are important to the world?
Because there are about 10 million species of plant and animal in the world. More than half of these live in the tropical rainforests. The rainforest could provide us with cures for diseases. Also, rainforests absorb a lot of rain so that there’s a constant supply of clean water running into rivers and lakes.□the area of the earth’s land covered by tropical rainforest
□ reasons why rainforests are being destroyed
□ the rate of rainforest destruction
□ some consequences of rainforests being destroyed
□ the best way to make money from rainforests13254Are these statements true or false? Correct the false statements.1. Rainforests cover 14% of the earth’s land surface.
2. More than half of the rainforests have disappeared.F6%T3. 150 acres of rainforest are destroyed every day.
4. In 40 years’ time we might not have any rainforests left on earth.
5. People can make more money from harvesting rainforest plants than from cutting down the rainforests. Over 150 acres of rainforest are destroyed every minute.FTTListening
taskon Page 79Look at the pictures in Exercise 1 and guess the answers to the questions.What materials are being used in this
experiment?
What do you think the purpose of the experiment is?
What order do you think the pictures should go in?Number the pictures in the order you hear about them.23154Listen to the first part again and answer the questions.What is the purpose of the experiment?
To find out three important conditions that seeds need in order to start growing.2. Are students going to do the experiment in groups or individually?
In groups.
3. Where are the materials that the students need to set up the experiment?
On the bench.4. What materials do the students need to set up the experiment?
Four dishes and four pieces of cloth, a dish of seeds, some tap water, some boiled water and some cooking oil.Listen to the first part again and complete the table of conditions that each dish of seeds was given.tap water, warm temperature, oxygentap water, cold temperature, oxygenno water, warm temperature, oxygenboiled water, oil, warm temperature, no oxygenNow listen to the second part of the tape in which the class discusses the results of the experiment. Complete the table of results.YesBecause they had water, warmth and
oxygen.NoBecause it was too
cold.NoNoBecause they were watered with boiled water which has no oxygen. Also, they were covered with oil which prevented oxygen getting to the seeds.Because they didn’t get any water.Listen to the second part of the tape again and discuss the question.What was the conclusion of the experiment?
Seeds need warmth, water and oxygen to grow.Thank you!
高三 选修 9
Unit 4on WorkbookUnit 4
Exploring plantsListening Listeningon Page 75a tropical rainforesthas been cut downPre-listening1. In which parts of the world would you find tropical rainforests?
Tropical rainforests occur in three major regions: Asia, Africa and Central and South America.2. Why do you think rainforests are being cut down?
As populations increase, people need more land to live on. There are also mining companies which destroy forests in their search for minerals.3. Why do you think tropical rainforests are important to the world?
Because there are about 10 million species of plant and animal in the world. More than half of these live in the tropical rainforests. The rainforest could provide us with cures for diseases. Also, rainforests absorb a lot of rain so that there’s a constant supply of clean water running into rivers and lakes.□the area of the earth’s land covered by tropical rainforest
□ reasons why rainforests are being destroyed
□ the rate of rainforest destruction
□ some consequences of rainforests being destroyed
□ the best way to make money from rainforests13254Are these statements true or false? Correct the false statements.1. Rainforests cover 14% of the earth’s land surface.
2. More than half of the rainforests have disappeared.F6%T3. 150 acres of rainforest are destroyed every day.
4. In 40 years’ time we might not have any rainforests left on earth.
5. People can make more money from harvesting rainforest plants than from cutting down the rainforests. Over 150 acres of rainforest are destroyed every minute.FTTListening
taskon Page 79Look at the pictures in Exercise 1 and guess the answers to the questions.What materials are being used in this
experiment?
What do you think the purpose of the experiment is?
What order do you think the pictures should go in?Number the pictures in the order you hear about them.23154Listen to the first part again and answer the questions.What is the purpose of the experiment?
To find out three important conditions that seeds need in order to start growing.2. Are students going to do the experiment in groups or individually?
In groups.
3. Where are the materials that the students need to set up the experiment?
On the bench.4. What materials do the students need to set up the experiment?
Four dishes and four pieces of cloth, a dish of seeds, some tap water, some boiled water and some cooking oil.Listen to the first part again and complete the table of conditions that each dish of seeds was given.tap water, warm temperature, oxygentap water, cold temperature, oxygenno water, warm temperature, oxygenboiled water, oil, warm temperature, no oxygenNow listen to the second part of the tape in which the class discusses the results of the experiment. Complete the table of results.YesBecause they had water, warmth and
oxygen.NoBecause it was too
cold.NoNoBecause they were watered with boiled water which has no oxygen. Also, they were covered with oil which prevented oxygen getting to the seeds.Because they didn’t get any water.Listen to the second part of the tape again and discuss the question.What was the conclusion of the experiment?
Seeds need warmth, water and oxygen to grow.Thank you!