Unit 2 Lesson 8 Why Are Plants Important? 课件（27张PPT） 2023-2024学年冀教版英语八年级下册

(共27张PPT)
Unit 2 Plant a Plant!
Lesson 8 Why Are Plants Important
1 学习目标 2 新课导入
3 新课讲解 4 当堂小练
5 课堂小结
目录
contents
Master the new words and phrases，the meaning of text.
Why do we need plants？In our daily life，why are plants important
Let the Ss can learn to protect the trees and plants.
学习目标
思 考
1. How many kinds of trees do you know
2. Do you know the importance of trees
新课导入
思 考
Why do we need trees
(1) Clean the air.
(2) Sit under a tree in the shade.
(3) The trees and plants take energy from the sun and turn it into food.
(4) Medicine and clothing are made from trees and plants.
(5) Many animals live in the forest and eat the fruit from the trees.
(6) Cover the soil.
(7) Plants make everything look beautiful.
Danny, Jenny and Brian are walking in a forest.
Jenny: I love this forest. There are so many trees and plants. The air
is always clean and fresh.
Brian: Yes. Trees and other
plants help clean the air.
Listen and read.
新课讲解
Jenny: That’s true. It’s pleasant to walk in the forest. When the
weather is sunny and hot, you can sit in the shade under
a tree. It’s nice and cool.
Danny: I'm hungry! Maybe I can eat a plant.
Brian: Sure, Danny! Look, there is an apple tree over there!
Danny: Is there a donut tree
Brian: Donuts don’t grow on trees!
Jenny: Trees and other plants are important to people. They help us
fulfill our basic needs.
Brian: That’s for sure. People use trees and other
plants in many ways. The trees and plants
take energy from the sun and turn it into food. Medicine and clothing are also made from trees and plants.
Jenny: The forest is important to animals, too. Many animals live in
the forest and eat the fruit from the trees. They eat other
plants, too.
Brian: And plants cover the soil. That way, the wind and water
don’t carry the soil away. Plants also make everything
look beautiful.
Danny: In a word, we can’t live without plants!
Language point 1
It’s pleasant to do… 做….很愉快
e.g. It’s pleasant to live in beautiful surroundings.
生活在优美的环境里是令人愉快的。
e.g. That’s because beautiful handwriting can give someone a good impression and also it’s pleasant to read.
这是因为美丽的笔迹，可能给别人留下良好的印象，并且愉快的阅读。
pleasant 指一般性的好，强调所修饰对象所具有的品质使人觉
得好玩、有趣、舒服，含有客观性。
e.g. We had a very pleasant time at their house last night.
昨晚我们在他们家过得很愉快。
e.g. I hope you will have a pleasant holiday.我希望你过一个愉快的假日。
pleased 只用于人，不用于物，指某人满足了自己的愿望而感到高兴。
e.g. I’m very pleased you can come.
Language point 2
They help us fulfill our basic needs.
help (sb.) (to) do sth. 帮助（某人）做某事，其中to 可以省略
e.g. The cleaner helps clean the floor.
这台除垢器有助于清洁地板。
help sb. with sth. (在某方面帮助某人) 常与help sb.(to)do sth. (帮助某人做某事)进行同义句转换。
e.g. Jack likes to help his sister learn English.=
Jack likes to help his sister with English.
杰克喜欢帮助他的妹妹学习英语。
Language point 3
Medicine and clothing are also made from trees and plants.
be made from 由……制成
be made from 与be made of
be made from从成品中看不出原材料，制成物已改变了原材料的性质。 The cake is made from a mixture of flour, sugar and eggs. 这个蛋糕是由面粉、糖和鸡蛋的混合物做成的。
be made from从成品中看不出原材料，制成物已改变了原材料的性质。 The desks are made of wood. 这些桌子是由木头制成的。
In a word, we can’t live without plants!
in a word总而言之，相当于in one word
e.g. In a word, I can’t go out as I have many things to do.
总而言之， 我不能出去， 因为我有许多事情要做。
与word有关的其他短语：
have a word with与……谈一谈 Can I have a word with you？
我能和你谈一谈吗？
have words with. . . 与……争吵 He had words with his wife last night.
昨晚他和他的妻子吵了一架。
in other words
换言之；换句话说 In other words, you’ll come instead of him. Right 换句话说，你将代替他来。对吗？
1
Read the lesson and tick the items mentioned.
□People can eat plants or use them as medicine.
□Plants help make the air clean and fresh.
□Many animals live in the forest.
□Books，paper，pencils and erasers all come from plants.
√　
√　
√　
Let’s Do It!
□Animals eat the fruit from the trees.
□The plants cover the soil and can stop the dust.
□When the weather is sunny and hot，people can sit in the
shade under a tree.
□The plants make everything look beautiful.
□People use wood from trees to build houses and furniture.
√　
√　
√　
√　
Complete the passage with the correct forms of the words in the box.
There are many trees and plants. It’s ________to walk in the forest. When the weather is sunny and hot，you can sit in the _______under a tree. Trees and other plants are one of our ________needs for life. Many things are made from trees and plants. Most animals live in the ________and eat the fruit from the trees. And plants ________the soil. That way, the wind and water don’t carry the soil away.
pleasant
shade
basic
forest(s)
cover
basic　shade　forest cover　pleasant
2
Work in pairs. Think about why we need plants.Discuss it and fill in the mind map. You can use some ideas from Activity 1.
Environment：
____________________
Clothing and school things：
_____________________
Shelter：______________
Food or medicine：
____________________
Functions of trees (plants)
3
一、词语运用
1．Food is our________(基本的) need.
2．They have a________(令人愉快的) trip.
3．People like to have a rest in the________(阴凉处)of the tree.
4．Trees and other plants help us________(满足) some needs.
5．The air is always clean and fresh in the________(森林)．
basic
pleasant
shade
fulfill
forest(s)
当堂小练
二、单项选择
Plants cover the soil. Then the wind and water don’t carry
the soil ___.
A. in B. out of C. away D. on
2. Are there many trees___
A. where do you live B. you live where
C. where you live D. you live there
C
C
3. Let’s ____ trees and the reason why we need them.
A. to talk about B. talking about C. talk at D. talk about
4. Donuts don’t grow _____ trees!
A. in B. on C. at D. in
5. Can you see seven monkeys ____ the tree.
A. on B. in C. of D. above
6. The desks are made ____ wood.
A. in B. from C. into D. of
D
B
B
D
重点单词：pleasant，shade，fulfill，basic， soil
重点短语：be made from…，carry away，in a word
重点句子：They help us fulfill our basic needs.
Medicine and clothing are also made from trees and plants.
In a word, we can’t live without plants!
课堂小结
感 谢 观 看