(共28张PPT)
Unit 2 Plant a plant!
Lesson 8: Why Are Plants
Important
学习目标
Key words & phrases:
basic; It’s pleasant to do...; take energy from...; in a word.
Key sentences:
1. It’s pleasant to walk in the forest.
2. Trees and other plants are important to people.
3. People use trees and other plants in many ways.
4. The trees and plants take energy from the sun and turn it into food.
To be able to talk about the importance of plants.
Words & Expressions
Let's read
pleasant
shade
fulfill
basic
soil
It’s pleasant to do...
take energy from...
in a word
adj. 使人愉快的
n. 树荫；阴凉处
v. 达到；执行
adj. 基本的；基础的
n. 土；土壤
做……很愉快
从……获取能量
总之；一句话
Warming-up
There are different kinds of plants in our daily life !
Why do we need trees
Trees are good for___________.
Trees are important to__________.
25%
Trees are important to__________.
environment
animals
people
Look and say
1.Give them a place to live in.
2.Provide them with food to eat.
1.Cover the soil.
2.Clean the air.
3. Beautify the environment.
1.Grow fruit.
2. Provide shade.
2. Be made into many things.
environment
people
Animals
Look and say
Free talk
What plants grow near your home
Why do we need trees
Trees play a major role in producing oxygen we breathe.
Many trees provide fruit.
We get wood from tree.
Trees prevent erosion of the soil, as well as provide a home for a variety of animals.
Presentation
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.
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！
Let’s Do It!
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.
□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.
√
√
√
2. Complete the passage with the correct forms of the words in the box.
basic shade forest cover pleasant
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
3. 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.
Functions of trees (plants)
Food or medicine：
_______________
Shelter：
_______________
Clothing and school things：
_______________
Environment：
_______________
Language points
1. It’s pleasant to walk in the forest. (教材P20)
pleasant adj. 使人愉快的；舒适的
相关词汇：
please v. 取悦；使……高兴
pleased adj. 高兴的
pleasure n. 快乐
pleasing adj. 令人满意的
pleasant 既可作表语也可作定语，多用于描述人或事物的性质
pleased 多描述人的感情，表示“某人对某事(或某人)感到高兴的或满意的”。
辨析：pleasant 与 pleased
e.g. This is a pleasant journey. 这是个令人愉快的旅行。
If you jump the queue, others will not be pleased.
如果你插队，别人会不高兴的。
2. When the weather is sunny and hot, you can sit in the shade under a tree. (教材P20)
shade n. 树阴；阴凉处
in the shade在树阴下；在阴凉处
e.g. Some girls are playing games in the shade.
一些女孩正在树阴下玩游戏。
3. They help us fulfill our basic needs. (教材P20)
help (sb.) (to) do sth. 帮助（某人）做某事
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. The cleaner helps clean the floor.
这台吸尘器有助于清洁地板。
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。
basic adj. 基本的；基础的
basic在句中可作定语或表语，常与介词to连用。
e.g. These are the basic rules of playing basketball.
这些是打篮球的基本规则。
Drums are basic to African music.
鼓是非洲音乐的基本乐器。
4. The trees and plants take energy from the sun and turn it into food.(教材P20)
take...from... 从……获取……
from 是介词，后面可接名词、代词或动名词。
e.g. We can take energy from the food and drinks.
我们能从食物和饮料中获取能量。
5. Medicine and clothing are also made from trees and plants.
(教材P20)
be made from 由……制成
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。
be made of 由……制成，指从原料到制成品，原有性质不变。
辨析：be made from与be made of
6. That way, the wind and water don’t carry the soil away.
(教材P20)
carry...away 把……带走/ 搬走
e.g. Would you please help me carry the heavy bag away
请你帮我把这个沉重的袋子搬走好吗
与away有关的其他短语
take...away 把……带走
put...away 把……收起来/ 放好
go away 走开
7. In a word, we can’t live without plants! (教材P20)
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：
① have a word with... 与……谈一谈
② have words with... 与……争吵
③ in other words 换言之；换句话说
一、单项选择
1. Let’s ____ trees and the reason why we need them.
A. to talk about B. talking about
C. talk with D. talk about
2. Donuts don’t grow _____ trees!
A. in B. on C. at D. in
3. Can you see seven monkeys ____ the tree.
A. on B. in C. of D. above
4. The desks are made _______ wood.
A. in B. from C. into D. of
Exercises
二、根据汉语意思完成句子
1. 在公园里散步真令人愉快。
_______________ have a walk in the park.
2. 我们可以从牛奶和鸡蛋中获取能量。
We could _______________ milk and eggs.
3. 总之，我们必须马上离开。
__________, we must leave right away.
4. 这本书对我很重要。
This book is very ___________me.
5. 面粉是用小麦做成的。
Flour ___________ wheat.
It’s pleasant to
is made from
take energy from
In a word
important to
Homework
Preview the passage Lesson 9.
Do the exercises in students’ book.
Thank you!
