七年级下册Unit 4 Save the trees.教学演示ppt课件

这是一份七年级下册Unit 4 Save the trees.教学演示ppt课件，共33页。PPT课件主要包含了Vocabulary，Reading，Writing，Test，Homework，记背七下U4词汇短语，完成讲义练习等内容，欢迎下载使用。
Test & Hmewrk
Save the Trees
翻译: 树木能够吸收有害气体（gases)。
答案: Trees can take in harmful gases.
翻译: 树木能够产生氧气（xygen)。
答案: Trees can prduce xygen.
翻译: 树木帮助我们与空气污染作斗争。
答案: Trees help us fight against air pllutin.
fight against/fr
翻译: 树木是与空气污染作斗争的主力军。
答案: Trees are majr fighters against air pllutin.
majr fighter
翻译: 树木使我们的生活更便利。
答案: Trees make ur lives mre cnvenient.
make ur lives cnvenient
翻译: 许多家具是用木头(wd)制成的。
答案: A lt f the furniture is made f wd.
be made f 由制成
翻译: 我们无法想象一个没有树木的世界。
答案: We can't imagine a wrld withut trees.
imagine +n./v.-ing
New wrds and phrases
harmfuladj.有害的
be harmful t对有害
harmful gases有害气体
prducev.产生；生产
prduce xygen产生氧气
majradj.主要的
fightv.与作斗争
fight against对抗；反对
majr fighter主要战士
cnvenientadj.方便的
make ur lives cnvenient 使我们生活便利
furnituren.家具
be made f/frm由制成
imaginev.想象
imagine +v.ing想象做
millins f数以百万计的
cut dwn砍倒(树木)
be gd fr对有好处
Read the passage (P41) and find ut the answers t the fllwing quetins.
What's the tpic sentence f the passage?
Hw many ways mentined in the passage d trees help us?
Hw d trees help us?
Trees prvide us with fresh and clean air.
Trees make ur lives mre cnvenient and we get a lt frm them.
Gist：Trees prvide us with fresh and clean air.
They keep the air cl and clean.
They take in harmful gases frm the air and prduce xygen fr us t breathe.
They’re majr fighters against air pllutin.
Gist：Trees make ur lives mre cnvenient.
Rebecca: I knw trees als make ur lives mre cnvenient. Many f the things in ur daily lives cme frm trees. Fr example, paper and pencils.
Gist：We get a lt frm trees.
Dr Jnes: Yu're right, Rebecca. In fact, we get a lt mre frm trees. We get fruit and il frm them. Tea als cmes frm the leaves f trees. Lk arund this rm. A lt f the furniture is made f wd. Trees are really imprtant in ur daily lives.
Many f the things like paper and pencils in ur daily lives cme frm trees.
We get fruit and il frm them.
Tea als cmes frm the leaves f trees.
A lt f the furniture is made f wd.
Gist：We shuld stp cutting dwn t many trees.
Rebecca: I can’t imagine a wrld withut trees.Dr Jnes: But we cut dwn millins f trees every year. We shuld stp ding this if we dn’t want a wrld withut trees.
We cut dwn millins f trees every year.
What happen t trees?
Read the passage (P42) and fill in the blanks.
Amazn Basin
defrestatin
以“Trees in ur daily lives”为题写一篇小作文。（三段论）
总: Trees are imprtant t us in ur daily life.
分: 从两个方面论述树木对我们生活的帮助。
总: Trees help us in many ways. We shuld stp cutting dwn t many trees if we dn’t want a wrld withut trees.
以“Trees in ur daily lives”为题写一篇小作文。（参考范文）
Trees are imprtant t us in ur daily life. Trees prvide us with fresh air. They keep the air cl and clean. They take in harmful gases frm the air and prduce xygen fr us t breathe. They als help us fight against air pllutin. Besides, Trees make ur lives mre cnvenient. Fr example, we get fruit and il frm them. Tea als cmes frm the leaves f trees. A lt f the furniture is made f wd.Trees help us in many ways. We shuld stp cutting dwn t many trees if we dn’t want a wrld withut trees.
Tny is frm America.
What is a lt f the furniture made f?
Are yu playing basketball?
T save the earth is ur duty.
What d plants give us?
The huses are made f wd.
In fact, I didn’t g hme last night.
Let’s stp t have a rest.
It is gd fr yur bdy t d sprts every day.
He didn’t leave until I came yesterday.
Lk! they are planting trees.
三、翻译句子。（每题2分，共10分。）
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