牛津版 (深圳&广州)七年级下册（2012秋审查）Unit 4 Save the trees.优秀课件ppt

这是一份牛津版 (深圳&广州)七年级下册（2012秋审查）Unit 4 Save the trees.优秀课件ppt，文件包含Unit4SavethetreesPeriod1ReadingI课件pptx、Unit4SavethetreesPeriod1ReadingI教案doc、Unit4SavethetreesPeriod1ReadingI学案doc、Unit4SavethetreesPeriod1ReadingI练习doc、14mp4、U4Readingswf等6份课件配套教学资源，其中PPT共33页， 欢迎下载使用。

1. Language knwledge1) branch, cnvenient, example, furniture, gas, harmful, imagine, prduce, majr, xygen, rt2) understand new phrases：fight against, fr example, millin f, take in2. Language skills1) be able t guess the meaning f wrds accrding t pictures r cntext, and exercise specific image thinking.2) usage f key wrds.3) analysis f simple sentence structure.
Lk at the pictures and talk abut it:
Hw many kinds f trees d yu knw?Can yu tell us smething abut them?
What d yu think f trees?
Presentatin
We can find its rt, branches and leaves n a tree.
Lk and say:
Trees can take in harmful gases frm the air and prduce xygen fr us t breathe.
harmful gases
We can use trees t make furniture.
The tree is in danger. We shuld save it.
Lk and say: Match the wrds with the pictures.
1. They are breathing pure ________(氧气).2. The villagers fught hard t ______(拯救) their green.3. Can the radiatin frm mbile phnes be ________ (有害的) t humans? 4. Palm trees have an unusually strng _______ (营救) system. 5. French _________(家具) was designed fr every use.
Cmplete the sentences:
Pre-reading
Write dwn the names f the parts f a tree. Use the wrds frm the bx t help yu.
branch fruit leaf rt
Think and chse the crrect answer:
a. They help fight against pllutin.b. They prvide us with wd, fruit, etc.c. They are hme t birds and animals.d. All f the abve.
What d trees d fr us?
Lk at the pictures and the title f the interview n page 45. Then answer the questins belw.
1 What d yu think the interview is abut? a. The lives f trees. b. Why trees are imprtant in ur daily lives.2 What can we make frm trees? Write dwn three examples.
paper, pencils, chairs
Watch the flash.
Chse the best answers accrding t the flash.
1.Wh is Rebecca interviewing A. Mr. Li B. Dr Jnes C. Her teacher D. Her dctr2.Hw des trees fight against air pllutin?A. They prduce xygen fr peple t breatheC. They keep the air cl and cleanD. All f the abve3. Which f the fllwing things can’t we get frm trees?A. paper B. rubber C. wd D. wine
Read the cnversatin and understand.
Trees in ur daily livesRebecca wants t knw mre abut trees and hw they help us. She is interviewing Dr Jnes abut trees.Rebecca: Hw d trees help us, Dr Jnes?Dr Jnes: They help us in many ways. 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.
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.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.
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.
Language pints
1 . They keep the air cl and clean. 他们保持空气凉爽和干净。 keep sb./sth.+adj./adv. 使……处于……状态eg. Everyne shuld keep the rm clean. 每个人都应该保持室内清洁。
2 . A lt f the furniture is made f wd. 许多家具是木头做的。 be made f+原材料：“由……制成”（从制成品中仍能看出原材料）　be made frm+原材料：“由……制成”（从制成品中看不出原材料）　be made in+地点：“某物生产于某地”　
e.g. The pipes shuld be made f plastic. 这些管子应该是用塑料制作的。 Paper can be made frm grass. 纸可以用草来制造。 This train is made in Zhuzhu. 这列火车是在株洲生产的。
3. Many f the things in ur daily lives cme frm trees. 我们日常生活中的许多东西都来自树木。 cme frm = be frm 来自e.g. Which part f Japan d yu cme frm? = Which part f Japan are yu frm? 你是日本哪个地区的人？
4.We shuld stp ding this if we dn't want a wrld withut trees. 如果我们不想要一个没有树的世界，我们应该停止这样做。 stp ding sth 意为“停止做某事”，表示不做这件事了；stp t d sth意为“停下来去做某事”，表示停下手中正在做的事，去做另一件事。
eg. The students stpped talking when Mr Chen came in. 当陈老师进来时，学生们都停止了说话。 He is tired. He wants t stp t have a rest. 他累了，想停下来休息一会儿。
The wrds in italics are frm the article n page 45. Circle the crrect answers t cmplete these sentences.
1. Harmful gases are ____ peple’s health. a. gd fr b. bad fr2. Trees prduce xygen. They ___ xygen. a. take b. make
3. Air pllutin is a majr prblem in the city. This prblem is ____. a. big and imprtant b. nt very imprtant4. Washing machines make ur lives mre cnvenient. With the help f them, ur lives becme ____. a. easier b. richer5 When yu imagine a picture, yu have it ____. a. n paper b. in yur mind
Cmplete the pster belw with the wrds frm the bx.
All abut trees Did yu knw trees(1)________ xygen?Did yu knw trees help us fight (2)_______ pllutin?Did yu knw the (3)_________ in ur classrm is made f wd?
against cnvenient furniture majr prduce
Did yu knw trees make ur lives very (4)__________?If yu want t knw mre abut trees, jin ur “All abut trees” talk at 4 p.m. n 26 Octber (Tuesday). We will interview Dr Jnes abut the lives f trees and their(5)_______ uses.
In grups, talk abut what yu can d t save trees .
Fr example:I prmise t write n bth sides f the paper!I prmise nt t cut dwn trees!I prmise t plant mre trees in the future!I prmise nt t use thrwaway chpsticks!...
Key wrds: against，branch，cnvenient，example，fight，furniture，gas，harmful，imagine，majr，xygen，prduce，save，rtKey phrases: fr example，millins f，take in
1. —— When will we have a meeting t discuss this prblem? ——Tmrrw mrning.A. find ut B. play with C. talk abut2.——Dn’t watch t much TV. It is harmful t yur eyes. ——Yes, Mm. I will turn it ff right nw.A. useful t B. bad fr C. imprtant t
Chse the answers that have the same meaning as the underlined wrds.
3. ——He came frm a pr family, but he changes his life nw. ——Yes, we shuld learn frm him.A. arrived at B. was frm C. left fr4. Mst peple are against the plan.A. dn't want B. dn't believe C. dn't agree n5. Drinking water is gd fr yur health.A. is famus fr B. is bad fr C. is nt bad fr