第4讲Unit4Savethetrees含参考问题详解.doc

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1、初中英语教学辅导讲义教师学生上 课 时 间辅导科目英语年 级七下 上 课 表 现 课题名称第四讲：Unit 4Save the trees教学目标知识点：现在进展时考点: 1. 考察单词形式转换和短语运用； 2. 现在进展时运用与不能用于进展时态的动词。能力：1. 学习并掌握本单元语法点：现在进展时； 2. 能够正确运用所学词汇； 3. 阅读完型能力训练。方法：讲练结合Step 1 Homework Checkingl 作业讲评；l 词汇短语听写：单词得分 短语得分l 上节课知识点回顾。Step 2 Warming-up英语谚语1. Time is money. 时间是金，其值无价。2. Ti

2、me is a file that wears and makes no noise. 光阴如锉，细磨无声。3. Time stays not the fools leisure. 时间不等闲逛的傻瓜。4. Time flies like an arrow, and time lost never returns. 光阴似箭，一去不返。5. Time and tide wait for no man. 岁月不待人。Step 3 Phonetic Symbols语音根底小练习：/ sk / st / sm / pl / kw / sp / sl / pr / tw /选出如下每组单词的划线局部发

3、音与其他三项不同的一项。( ) 1. A. speakB. sportC. specialD. stand( ) 2.A. snowB. smallC. smileD. smoke( ) 3.A. planeB. playC. practiceD. please( ) 4.A. twentyB. twoC. twelveD. between( ) 5.A. firstB. starC. stopD. shopkeys:DACBDStep 4Language LearningUnit FourSave the trees单词归纳n.pine, branch, root, example, gas

4、, oxygen, furniture, disease, hole, containerv.save, discuss, fight (fought), produce, imagine, dig (dug), carryadj.harmful, major, convenientprep.against【单词重点讲解】1. save v. 拯救 e.g. He saved my life. 他救了我的命。 【拓展】 save v. 储蓄；节省 反义词：waste浪费save money 攒钱 save water 节约用水e.g. She saved money for many year

5、s. 她存了许多年的钱。We should save water. 我们应该节约用水。2. furniture n. 家具【解析】furniture为集合名词，当单数使用，没有复数形式。“一件家具：a piece of furnituree.g. All the furniture in this shop is from Europe.所有这家店里的家具都是从欧洲进口的。3. against prep. 反对【解析】 against为介词，不要把它当动词用She against the idea. 【误】She is against the idea. 【正】【词义拓展】 against p

6、rep. 靠着，倚着e.g. Put the bed against the wall. 把这床靠墙放。4. harmful adj. 有害的 e.g. They take in harmful gases from the air. 它们吸收空气中的有害气体。 【词组搭配】be harmful to 对有害= do harm to = be bad for 【词汇拓展】 harm n. 伤害, 害处v. 伤害; 损害harmlessadj. 无害处的, 无恶意的, 无辜的【典型例题】中译英看太多电视对你的眼睛有害。keys: Watching too much TV is harmful t

7、o your eyes.5. imagine v. 想象；设想e.g. I cant imagine a world without trees. 我无法想象一个没有树的世界。【解析】1imagine + 名词 / 代词 e.g. Can you imagine the situation there? 你可以想象那儿的情况吗？2imagine + 动名词 e.g. Can you imagine Tom riding a bike? 你会想到Tom骑自行车吗？3imagine + that从句 e.g. Can you imagine that Charlie is the thief? 你

8、能想到Charlie是小偷吗？4imagine + 宾语+ to be+ 名词 / 形容词 / 介词短语 e.g. Dont imagine yourself ( to be ) always correct. 不要以为自己总是对的。 Imagine yourself ( to be) in his place. 设想你处在他的境地。【词汇拓展】 imagination n. 想象力 e.g. She has a good imagination. 她的想象力很好。【典型例题】1. 你能想象没有水的世界吗？2. 首字母填空。 He cant i that, because his i is s

9、o poor.keys: 1. Can you imagine a world without water? 2. imagine, imagination6. fight v. 与作斗争过去式fought e.g. They help fight against pollution. 他们帮助抵制污染。【词汇拓展】fighter n. 斗士，战士，好战者【词组搭配】fight against 反对，与作斗争，对抗 fight with 与打架 fight for 为斗争，为奋斗【典型例题】选用上词填空。 1. They were good friends, but sometimes the

10、y each other. 2. We should pollution so that we may have a clean world. 3. As a young man, we must our future.keys: 1. fought with 2. fight against 3. fight for短语归纳ReadingListeningknow (more) about 了解更多关于in many ways 在许多方面makemore convenient 使更方便take in 吸收producefor 为生产keep the air cool and clean 保持

11、空气凉爽干净air pollution 空气污染e from 来自for example 例如in fact 补充细节确切地说getfrom 从获得look around 环顾四周a lot of furniture 许多家具(be) made of 由制成in our daily lives 在我们的日常生活中cut down 砍伐，砍倒millions of 大量的；数以百万计的stop doing sth. 停止做某事(be) good for 对有用，有好处in difficult environments 在恶劣的环境里useto do 用去做fight against 与作斗争Gr

12、ammar More Practicethousands of 数以千计的living things 生物because of 由于the number of 的数量do ones best to do sth. 尽力去做某事be in danger 处于危险之中as a result 结果，因此the habit of的习惯according to 依据，根据such as 例如the importance of 的重要性【短语重点讲解】1. in many ways 在许多方面e.g.They help us in many ways. 他们在很多方面帮助我们。 【短语拓展】1. in .

13、way “以方式，如in a clever way, in a simple way.2. in a way “在某种程度上，从某种意义上来说3. in this way “这样，用这种方式4. on the way to“在去的途中5. by the way “顺便说说，顺便问一下【典型例题】1. 他用一种简单的方法解决了那道难题。He solved the difficult problem. 2. Tom在很多方面都是位了不起的人。Tom is a big man . 3. 我爸爸在去上班的路上。 My father is to work. 4. 顺便问一下厕所在哪？, where is

14、 the toilet? 5. 在某个层面她是对的。 She is right .keys: 1. in an easy way 2. in many ways 3. on his way 4. By the way 5. in a way2. keep the air cool and clean 保持空气清爽洁净e.g. They keep the air cool and clean. 他们保持着空气的清爽与洁净。【解析】1. keep sb. /sth. + adj. “使某人或某物保持2. make sb. /sth. + adj. “使某人或某物【拓展】1. keep doings

15、th. “使某人或某物保持做2. make dosth. “使某人或某物做【典型例题】( ) 1. Dont be late, or you will make you teacher . A. to angry B. angry C. angrily D. be angry( ) 2. Im sorry for keeping you . A. to wait B. wait C. waiting D. waited( ) 3. We should keep our classroom . A. cleaning B. clean C. cleanly D. cleaned( ) 4. He

16、r parents made her some housework last Sunday. A. to do B. do C. does D. doingkeys: 14 BCBB3. be made of 由制成e.g. A lot of furniture is made of wood. 许多家具是由木材制成的。 【辨析】be made of 可以看出原材料 由制成be made from看不出原材料 e.g. The table is made of wood. 这桌子是由木材制成的。 Paper is made from trees. 纸是有树木制成的。【拓展】be made by

17、 由谁制造 be made in 在某地生产或制造 be made up of 由构成一般是多种构成 be made into 被制成为【典型例题】( ) 1. The old bridge is made stone. A. of B. from C. in D. up of ( ) 2. The machine was made Uncle Zhang. A. of B. from C. up of D. by ( ) 3. This kind of drink is made apple. A. of B. from C. in D. into ( ) 4. The team is ma

18、de 19 students and a teacher. A. of B. from C. in D. up of ( ) 5. This bike is made Shanghai. A. of B. from C. in D. by( ) 6. This piece of wood will be made a small bench. A. of B. from C. in D. intokeys: 16 ADBDCD4. millions of 数以百万计的e.g. But we cut down millions of trees every year.但我们每年都砍下了数以百万计

19、的树木。【解析】1. 后接名词，表示概数，如millions of trees；2. 当million 前面出现具体数字时，如two, 应表达为 two million trees.注意单位不能加se.g. Millions of tourists visit Guangzhou every year.每年都有数以百万计的游客来游玩。 【举一反三】 hundreds of 数以百计的 thousands of 数以千计的 billions of 数以亿计的注意单位hundred, thousand, billion和million一样，跟数字连用时，不能加s【典型例题】( ) 1. -Ther

20、e are _ people here in our city.-Actually, there are _ people here in our city.A. millions of; three million B. millions of; three millionsC. millions of; three million of D. million of, three millions of ( ) 2. The sky tonight is really beautiful. You can see_ stars smiling to you.A. 3 thousandsB.

21、3 thousand of C. 3 thousand of D. thousands ofkeys: AD5. the number of的数量e.g. As a result, the number of kinds animals, birds, insects and trees in the world is decreasing. 因此，世界上动物，鸟类与树木的种类数量在不断减少。【辨析】 the number of的数量谓语动词用单数a number of一些，许多后跟可数名词复数，谓语动词用复数 e.g. Here area number of books for you. T

22、he number of them is 20.这里有一些给你的书，数量是20本。6. do ones best to do 尽某人最大努力做e.g. We must do our best to protect the Amazon rain forest. 我们必须尽自己最大的努力去保护好亚马逊雨林。【同义词组】do ones best to do = try ones best to do 尽某人最大努力做 e.g. We should do our best to help the elderly people of no family.我们应尽力帮助那些无家可归的长者。7. Beca

23、use of 因为e.g. Many living things lose their homes because of deforestation.由于森林砍伐，很多生物都失去了他们的家园。 【辨析】1. because of + 名词，代词或动名词e.g He missed the train because ofyou. 因为你，他错过了火车。2. because + 句子e.g. Many living things lose their homes becausepeople keep cutting down trees.由于人们砍伐森林，很多生物都失去了他们的家园。【句型讲解】1

24、. We should stop doing this if we dont want a world without trees.如果我们不想要一个没有树木存在的世界，就应该停止这样做。 【要点解析】1、if “如果，引导条件状语从句。2、主句与从句的时态常遵循“主将从现原如此。即：主句使用一般将来时也可使用情态动词，从句使用现在时。e.g. We will/can go to visit Tom if the weather is fine tomorrow.如果明天天气好的话，我们将可以去Tom家拜访。2. However, people are destroying the area

25、by cutting down many of the trees.然而，人们正在以滥伐的方式破坏着这片土地。 【要点解析】1、however表示“然而，通常有逗号隔开。2、by doing 表示“通过.手段或方式，在句子中充当状语。e.g. He makes a living by collecting rubbish. 他靠捡垃圾为生。【课堂根底练习】一、根据句意与所给的首字母提示写出所缺单词，并注意其形式。1. They d the problem again and again, but they didnt have the same idea.2. Without r, plant

26、s cant live.3. Tom is a good student. He never f with his classmates.4. Its c for us to travel around the world by plane.5. Cancer (癌症) is a dangerous d. Many people die of it every year.6. The cat climbed the tree and hid (隐藏) in the b.7. Can you help me c the desk? Its very heavy.8. Leaves take in

27、 light and heat from the Sun to produce o.9. When you plant a tree, d a hole first and then put the tree in it.10. My father is a famous doctor. He s lots of peoples lives every year.11. Dont smoke. Its h for you to smoke.12. This is a good e. We can learn from it.二、根据中文意思，完成如下句子。1. 根可以吸收水分来保持植物的生命。

28、 Roots can water to keep the plants alive.2. 我喜欢运动，例如，我每天都去打篮球。 I like sports. , I play basketball every day.3. 这条项链是由黄金打造的。 The necklace gold.4. 每年都有数百万游客来参观长城。visitors e to visit the Great Wall every year.5. 这种鸟是来自哪里的？ Where this kind of bird ?6. 工人们正在砍伐被折断的树。 The workers the broken trees.7. 多吃蔬菜和

29、水果对我们的身体有好处。 Eating more vegetables and fruits our bodies.8. 事实上，她是一名教师而不是学生。, he is a teacher not a student.9. 当你处于危险时，你可以拨打110。 You can call 110 when you are .三、从方框中选择适当的短语填空，并注意其形式。fight against, look around, the number of,because of, millions of, as a result, providewith1. flowers in the park is

30、 over ten thousand.2. Trees always the air pollution.3. The man often the poor girl some food.4. I , but found nobody here.5. of hard work, he passed his exams.6. I was late for school this morning the heavy rain.7. Every year, travelers e to visit Guangzhou.keys:一、1. discussed 2. roots 3. fights 4.

31、 convenient 5. disease6. branches 7. carry 8. oxygen 9. dig 10. saves 11. harmful 12. example二、1. take in 2. For example 3. is made of 4. Millions of 5. does, e from6. are cutting down 7. is good for 8. In fact 9. in danger三、1. The number of 2. fight against 3. provides, with 4. looked around 5. As

32、a result 6. because of 7. millions of【语法归纳】现在进展时【结构】肯定句：主语 + be + 现在分词v-ing+ 其他.否认句：主语 + be + not + 现在分词v-ing+ 其他.一般疑问句：be +主语 + 现在分词v-ing+ 其他？特殊疑问句：特殊疑问词 + 一般疑问句？【动词的现在分词变化规如此】1一般情况，直接加ingfly-flying, wait-waiting2以不发音e结尾，去e加ingtake-taking, dance-dancing3以重读闭音节结尾，双写最后一个字母，再加ingbegin-beginning, dig-d

33、igging4以ie结尾的，将ie变为y，再加ingdie-dying, tie-tying【用法归纳】一、表示说话时正在进展或发生的动作常与now, look, listen, at the moment等连用 e.g. Look! They are reading over there under the tree. 看！他们在那边的树下看书。 二、表示现阶段正在进展，而说话时不一定在进展的动作 常与these days, this week等连用e.g. We are working in a factory these days. 这几天我们在一家工厂工作。三、现在进展时表将来常与e,

34、 go, leave, start, arrive, stay等动词连用 注意：所用动词必须是动作，而不是状态，主语必须是人e.g. They are leaving for New York tomorrow. 他们明天将要动身前往纽约。 Are you staying here till next week? 你会一直待到下个星期吗？四、现在进展时与always等副词连用时，带有感情色彩e.g. He is always arguing with others. 他总是和其他人争吵。五、用现在进展时表示问候的关切心情e.g. How are you feeling today? = How

35、 do you feel today? 你今天感觉如何？ Why are you looking so sad? = Why do you look so sad? 为什么你看起来这么难过的样子呢？【要点归纳】1、当句中出现“listen, look, be quiet等祈使句时，即强调事物正在进展，需使用现在进展时；另外，与局部时间词“right now, at the moment, now搭配时，也常用现在进展时；2、当对方用现在进展时提问时，通常用现在进展时回答；3、现在进展时可以表示现阶段一直在发生的动作，常搭配的时间词有“these days, this week;4、现在进展时可

36、表示即将要发生的动作；5、有些动词一般不可以用于进展时态，如：know, think, hear, find, see, like want, prefer等。 课本P51【课堂练习】一、请写出如下动词的现在分词形式。1. read 2. write 3. swim 4. study 5. play 6. die 7. lie 8. run 9. clean 10. have 二、单项选择。( ) 1.Look! Tom a book.A. readB. readsC. is readD. is reading( ) 2.you to the music now?A. Are, listenB

37、. Do, listeningC. Are, listeningD. Is, listen( ) 3.She often her homework at 8:00 p.m. Now, it is eight oclock. She her homework.A. do, is doingB. does, is doingC. did, doesD. does, does( ) 4.Lucy drawing very much.A. like B. likesC. is liking D. is like( ) 5.-What you ?-Im studying English.A. are,

38、doingB. do, doC. do, doingD. are, do( ) 6.Sorry! I the answer.A. dont knowB. am knowingC. not knowD. dont knowing( ) 7.-Dinner is ready, Ben.-OK, Mum. I . Let me put the books away first.A. eB. esC. cameD. am ing( ) 8.Look! The cat is on the floor.A. lyingB. lieC. liesD. liing( ) 9.Listen! Who ?A. i

39、s singB. are singC. singsD. is singing( ) 10.The food delicious.A. smellB. smellsC. smellingD. is smelling三、情景反响从方框中选择恰当的选项完成对话有一项为哪一项多余的。A. Trees help us a lot in our daily lives.B. You are right.C. We must stop them.D. Without trees, air gets worse and worse.E. For example, it can provide us with

40、paper and pencils.Kate: Do you like trees, Tom?Tom: Yes, Kate.Kate: (1)Tom: I think so. (2) And a lot of furniture is made of wood. We should protect trees.Kate: But people cut down millions of trees every year. (3)Tom: Yes. (4) We need trees take in harmful gases.Kate: Protecting trees is protectin

41、g ourselves.Tom: (5)keys:一、1. reading 2. writing 3. swimming 4. studying 5. playing 6. dying 7. lying 8. running 9. cleaning 10. having 二、15 DCBBA 610 ADADB 三、AECDB学法提炼1、解题方法现在进展时：1根据时间标志或语境判断是否为现在进展时 2“be + 现在分词构成缺一不可3、须知事项1.现在分词的变化；2. 不能用于进展时态的动词要注意；3. 现在进展时表将来的用法。阅读完型训练语法选择Tea is one of the most important and popular 21 in China. There are many different kinds of tea. People always say, “We have 22 kinds of tea. But 23 , we have green tea, black tea, oolong tea