7B--UNIT4沪教牛津版七年级下册教案

1、7B Unit 4 save the trees.Date:_ 2013重点单词Save节约，节省pi ne n.松树discuss v讨论，谈论Branch n.树枝，分歧root n.根，根源fight v.与战斗Against反对，违反example例子harmful有害的gas气体，毒气produce n.农产品oxyge n n.氧气major主要的convenient adj.方便的furniture家具imagine想象，想至Udisease n.疾病digv.挖Hole n.洞carry拿，搬运container n.容器必背短语：take in吸收come from来自for

2、 example例女口in fact实际上，事实上look around四周环顾(be) made of由 组成millions of数以百万的(be) good for对 有害仔细讲解：1f I plant this seed in the ground,will it become a pear tree,Hi? (page43)由if引导的条件状语从句，表示”如果”，如果主句（包括祈使句、含有情态动词c a n、m a y、m u s t） 用 一 般 现 在 时 ， 从 句 也 要用一般现在时；主句用过去时，从句也要用过去的某种时态，如果主句是一般将来时态，从句要用 一般现在时表示将来

3、。2. They help fight against pollution.（page44）Fight vi.与.斗争，常与介词against或with连用。女口：They fought against the enemy fiercely扩展：fight vt.战斗，反对，可直接跟宾语。女口：They fought their enemies bravely.他们勇敢杀敌扩展：against prep.意为，违背，违抗；紧靠，防备” 。Be against反对，be for赞同 女口：We take outumbrella just against a rainy day.我们带上雨伞以防雨

4、天。3. They take in harmful gases from the air and produce oxygen for us to breathe.（page45）harmful adj.有害的；harm n. vt.损害；伤害；危害;harmless adj.无害的，不致伤的.女口：Itharmful to your eyes to read in the dark.No harm would come to duce vt.产生，生产。也可以作为不可数名词，意为：产品，农产品。produce不可数n.农产品或“自然产品”的总称，The farmers broug

5、ht their produce to town early each Saturday morni duct可数n.“产物，产品”，多指工业产品， 亦可指任何体力劳动或脑力劳动所生 的东西或发源于其它事物的东西Mach in ery, cars, ships are all in duct ion不可数n.“生产，制造”。指生产的行为。也可指“产量”。The company is famous for the production of small cars.4.A lot of the furniture is made of wood.

6、(page45)Furniture不可数名词，家具。a set of furniture套家具;一件家具a piece of furniture。成品+be made in+地点产于某地原料+be made in to+成品被制成成品+be made of+原料（看得出，物理）由.制成成品+be made by+制造者.被.制造成品+be made from+原料（看不出，化学）由.制成My pia no is made in Beiji ng.The birthday cake is made by my mother.Wine is made from grapes.The bike is

7、 made in Chi na.of,物质变化是from)5. I canimagine a world without trees.(page45)Imagine vt.想像；猜想；臆断.后面可跟名词，代词，动名词和从句作宾语。Imagi ne指设想与事实相反的东西，指错We can hardly imagi ne life without water.误的猜想；也可以表示猜想的东我们简直不敢想象没有水的生活。西没有确定性，只是一种印象。guess缺之任何一句或资料而凭主观Open your eyes,and guess who has the印象的猜想pen?6.However,（page

8、48）However副词，表转折，意为：然而；不过。However副词位于句首、居中、句末，要 用逗号与其他部分隔开。Later, however, he changed his mind.But连词位于句首或居中。but之后 一般不得使用逗号But I did tell you about the exam in ati on!Hate讨厌，不喜欢Hate doing sth.表示习惯性动作Hate to do sh.表示某一次具体的仃为7.She can skate at a very high speed because she practises a lot.1Practise vt.

9、训练，练习。宾语可接名词，代词，动名词。女口：Its very important to practise listening.练习听力是非常重要的。2Practise vi.女口：Don t forget to practise after class.课后别忘了练习。3practise的名词是practice不可数名词。通常指经常性或系统性的重复练习。Practice makes perfect.是一句谚语，意思是熟能生巧”。8.But the speaker did not_stop speaking until twenty past twelve.（page52）Not.until意

10、为：直到.才.。主语的动词一般为非延续性动词，它所表示的动作 直到until所表示的时间才发生。女口：We wonsee any flowers until May.Unitil连词，意为：直到.时。用于肯定句，主句的动词一般为延续性动词。女口：He waits the children are asleep.I shall stay here until twelve o clock.The table is made of wood.Grapes are made into wine.(记忆顺口溜：物质不变用9.Ano ther指三者或三者以上中的“另一个”I dont likehis o

11、ne. Please show meano ther.otherAdj.其他的，其余的，常用复数形式Ask some other people.the other两者中 另一个 ，one the other一个另一个He has two daughters. One is a nu rse,the other is a worker.others其他的人或物There are no others.没有别的了。the others其余的人或物，表示一个范围内其他全 部Two boys will go to the zoo, and theothers will stay at home.10.辨

12、析Carry,take,bringcarry搬，扛不论移动的方向The mother carries her baby in her arms。bring带来，带走以说话人为中心， 把某物带到说话人身边They re going to bring some gifts for us onChristmas.take以说话人为中心，把某物带到远处Please take these books to the library for me.11t covers five and a half million square kilometers of the Amazon Basin and spre

13、ads acrossnine countries.(page54)(1Cover v.覆盖，遮盖；covewith用把盖上；be covered with 被.覆盖着。如:The road is usually covered with snow in winterCover可数名词，意为：覆盖物，盖子，封面女口：The new book needs a new cover.(2)区另U：across，cross，through，overacross介词，在空间内从一端到另一端， 或是十字交叉穿过.（过河，过桥，过马路）cross动词，含义同上through介词。穿过，通过。动作是立体空间进行

14、，穿过沙漠，森林，窗户over动词，则是对于位置的高低而言，强调翻越穿越高的障碍物，如篱笆，栅栏，山脉12.Many living things lose their homes because of deforestation.(page54) 许多生物因为森林砍伐失去家园。livi ngn.生物all livi ng thin gs所有生物adj.活着的、有生命的，主要用于 作前置定语及冠词the之后，表示一类人the livi ng活着的人们alive:活着的、有活力的The fish is still alive/livi ng.Livelaiv“活的”“有生命的”“活牛生的”， 主要

15、用来说鸟或其他动物a live fish一条活鱼；a live tiger一只活老虎实况的、现场直播的a live report现场报道lively活泼的、有生气的、生动的a lively child活泼的孩子a lively discussi on热烈的讨论13.As a result, the number of kinds of animals, birds, insects and trees in the world isdecreasing.结果，世界上动物、鸟类、昆虫和树的种类的数目正在减少。(page54)the nu mber of的数量，后接复数名词， 谓语动词要用单数，T

16、he nu mber of the stude nts in our classis 45.a nu mber of大量，许多=ma ny，后接复数名词， 谓语动词要用复数A number ofstudents are playingfootball.14.Tea is the most popular drink in the world besides water.(page55)茶是世界上除了水之外最受欢迎的饮料。besides“除了之外”（还有） 相当于“加上”；Besides his wife,his daughter also went to see him.except除了之外（

17、没有）I go to school every day except but Sun day.相当于“减去”；but介词，除了。只能和不定代 词女口nothing,all,anything,no one,anyone等连用。Nobody knows the truth but Tom.语法：现在进行时、教材经典句子:1. The children are playing in the park。2. We are stay ing at Peterhouse at the mome nt。二、 现在进行时：一般表示此刻正在进行的动作，也表示目前阶段一直进行的动作。三、 用法：1.现在进行时一般

18、表示此刻正在进行的动作，常和now，right now，at this moment等时间状语连用，以及动词look，listen等。女口：Look！She is cleaning my room now。2现在进行时表示目前阶段一直进行的动作，但是说话时不一定正在发生，常和these days, this week，at present” 等连用。女口：Is Jame work ing hard this term？1.一些表示状态和意愿的动词，女口be,like,want,kown,think,have等，不能用于现在进行时态。女口：I want to go home now。2. Come,go，leave，stay，start，arrive等表示往返或位置转移的动词，可以用现在进行时 表示将要发生的动作，这些动词可以与“tomorrow，next week”等表示将来的时间状语连用。3.现在进行时与always，often等词连用，也可