(共33张PPT)
Unit 2 Plant a plant!
Lesson 7: Planting Trees
学习目标
Key words & phrases:
hole; large; cover; fill; storm; dirty; northern; bottom; fill...with...; by the way; dust storm; turn into; for sure; in the bottom of.
Key sentences:
1. It must be large enough to hold the roots of the seedling.
2. Ms. Liu told us the wind blows the dirt and the sand here from the north.
3. It’s fun and important to plant plants.
To learn how to plant a tree and protect the environment in our daily life.
Words & Expressions
Let's read
hole
large
root
seedling
cover
fill
n. 洞
adj. 大的；巨大的
n. 根
n. 幼苗；秧苗
v. 覆盖 n.盖子
v. 装满；充满
Words & Expressions
Let's read
dirt
pack
dust
storm
dirty
northern
n. 泥土；污物
v. 堆积；压实；装箱
n. 沙土；尘土；灰尘
n.暴风雨
adj.不干净的；肮脏的
adj. 北方的；北部的
Words & Expressions
Let's read
bottom
fill...with...
by the way
dust storm
turn into
for sure
in the bottom of
n. 底部；最下部
用……填满
顺便说一下
沙尘暴
变成
肯定地；确定地
在……底部
Warming-up
Do you know when Tree Planting Day is in China
It’s on March 12 .
Do you know how to plant a tree
Look and say
dig a hole
put the seedling into the hole
Look and say
fill the hole with dirt
pack the dirt around the new tree
water the new tree
Presentation
THINK ABOUT IT
·When is Tree Planting Day in China
·What are the basic steps for planting a tree
It’s March 12. Li Ming and his classmates are on a hillside.
They are planting trees as a school project. A worker is there helping them.
Li Ming：Excuse me, sir. We are digging a hole. Is it big enough
Worker：Maybe you should make the hole a little bigger. It must be large enough to hold the roots of the seedling.
Li Ming：I see. Thank you.
Worker：Now, put the seedling inside, cover the roots and fill the hole with dirt. Then pack the dirt around the new tree with your feet.
Wang Mei：OK. By the way, there is another group of people down the hill. Are they also coming to plant trees
Worker：Yes. Many people are worried because the environment is changing, and they want to do something to help.
Li Ming：These changes are serious. When there is a dust storm in spring, it gets windy and dirty everywhere.
Wang Mei: Ms. Liu told us the wind blows the dirt and the sand here from the north. Nothing can stop the wind because there are not many trees left.
Worker: Exactly. A lot of rich lands in the northern area have turned into desert.
Li Ming：I suppose tree planting is very important work.
Wang Mei：For sure. I really like this project. It’s also a great way
to learn about nature.
Worker：Yes. It’s fun and important to
plant plants. Oh, and please
remember to put a little water
in the bottom of the hole.
Let’s Do It!
1. Read the lesson and write true(T) or false(F)．
1．Li Ming and Wang Mei were having a picnic on a farm. ( )
2．They asked a teacher for help. ( )
3．Li Ming saw another group of people on the hillside. ( )
4．Wang Mei really liked the project. ( )
F
F
F
T
2. Fill in the blanks with the words in the box. Then put the steps for planting a tree in the correct order.
□Put the ________of the seedling into the hole.
□Put a little water in the ________of the hole.
□________the roots and fill the hole with dirt.
□Pack the dirt ________the new tree with your feet.
□Dig a ________big enough to hold the roots of the seedling.
bottom hole around cover roots
roots
bottom
Cover
around
hole
2
3
4
5
1
3. Complete the passage with the missing phrases.
The Green Great Wall was built across ________of the country. What is the Green Great Wall？It is made up of strips of human planted forest.
Each year ________blow a lot of soil off the land. Things are getting more and more serious. About 3 600 square kilometres of grassland are taken by the Gobi Desert every year.
D
C
The Green Great Wall project started in 1978. By ________, people hold back the expansion of the desert and raise northern China’s forest coverage by 5% to 15%. By the year 2050, ________will be about 2 800 miles long.
B
A
A．the Green Great Wall B．planting more trees
C．dust storms D．the northern part
4. Work in pairs. Read the lesson and the passage above again. Why should we plant trees？Talk about it and list at least three reasons.
1．
2．
3．
We can have a rest in the shade under the tree.
Trees can stop the dust storm.
Trees help us fulfill our basic needs.
Language points
1. Maybe you should make the hole a little bigger . (教材P18)
make+sb./sth. ＋宾补 使某人/ 某物……
e.g. They made him captain. 他们选他当队长。
The news made him sad. 那条消息使他悲伤。
He made me repeat it. 他让我将它重述一遍。
名词作宾语补足语
形容词作宾语补足语
动词原形(不带to的动词不定式)作宾语补足语
When I first came to New York, I had a lot of trouble making myself understood.
我刚到纽约时，想让别人听懂我的话非常困难。
The children must be made to clean their own room.
必须叫孩子们打扫他们自己的房间。
过去分词作宾语补足语
make sb. do sth. 的被动形式为sb. be made to do sth.(某人被迫做某事)
2. It must be large enough to hold the roots of the seedling.
(教材P18)
enough adj. 充足的； adv. 足够地；充足地
be enough to do sth.意为“足够……做某事”，动词不定式表示结果，其逻辑主语可用介词for 引出。
e.g. He is old enough to go to school.
他(年龄) 足够大，可以上学了。
The ice isn’t thick enough for you to walk on.
这冰不够厚，你不能在上面走。
He has enough money/money enough to buy a car.
他有足够的钱买一辆汽车。
too...to... 表示“太……而不能……”，
so...that...表示“如此……以至于……”，
它们有时可与not...enough to do sth. 互换。
e.g. The box is too heavy for me to carry.
＝The box is so heavy that I can’t carry it.
＝The box isn’t light enough for me to carry.
这个箱子太重，我搬不动。
可前
可后
只能后置
+
enough
名词
形容词
或副词
+
enough
enough
+
注意：
3. Now, put the seedling inside, cover the roots and fill the hole with dirt. (教材P18)
cover v. 覆盖 n. 盖子；封面 作动词常用结构：
cover A with B 用B覆盖A
be covered with 被……覆盖
e.g. She covered her face with her hands. 她双手掩面。
The book needs a new cover. 这本书需要一个新封面。
The road is usually covered with snow. 这条路通常被雪覆盖。
She used a cover to cover a box. 她用一个盖子盖一个箱子。
fill v.充满；装满 常用结构：
① fill...with...“用……装满……”，主语是人，强调动作的过程。
② be filled with 装满；充满。同be full of。
e.g. He filled the cup with tea.
他把杯子里装满了茶。
The cup was filled with/ full of tea.
杯子里装满了茶。
fill 的其他固定搭配
fill in填写
fill out( 使) 膨胀，扩张，填写
fill up(使)充满，填满
4. By the way, there is another group of people down the hill. (教材P18)
by the way 顺便问一下 常用来表示说话人要转入一个新话题。
e.g. By the way, where is he 顺便问一下，他在哪里？
由 way构成的其他词组：
① all the way 一路上；自始至终
② in a way 在某种程度上
③ on one’s/the way (to...) 在(某人去……的)路上
④ in the way 妨碍；挡道
5. A lot of rich lands in the northern area have turned into desert. (教材P18)
turn into 变成
e.g. Water can turn into ice. 水可以变成冰。
How can we turn water into water vapor 我们如何能把水变成水蒸气？
turn 构成的短语
turn off 关掉 turn around 转身；翻转
turn back 折回；回来 turn down 把……调低
turn on 打开 turn over 翻转
turn up 把……调高；露面 turn out 出席；证明是
6. Oh, and please remember to put a little water in the bottom of the hole. (教材P18)
remember to do sth. 记得去做某事
① remember to do sth. 记得要做某事( 事情还未做)
② remember doing sth. 记得做过某事(事情已经做了)
辨析：remember to do sth.与remember doing sth.
e.g. I’ll remember to mail these letters.
我会记得去寄这些信。
When you leave the room, remember to turn off the light.
当你离开房间的时候记得要关灯。
My sister remembered locking the door.
我妹妹记得锁过门了。
Exercises
一、单项选择
1．What can we cover the roof ________？The rain is too heavy.
A．in B．with
C．of D．for
2．There is a fish ________ the bottle.
A．to the bottom of B．at the bottom of
C．to bottom of D．at bottom of
3．Look out! The cup is ________hot water.
A．full of B．fill with C．full D．fill
4．—What happened to Mark
—He fell________the bike________a snowy morning.
A．off; in B．down; at C．off; on D. down; in
Homework
Preview the passage Lesson 8.
Do the exercises in students’ book.
Thank you!
