七年级下册Unit4Savethetrees教学案精简版.docx

1、七年级下册Unit4Savethetrees教学案精简版龙文教育一对一个性化辅导教案学生学校年级七年级次数第 次科目英语教师日期时段课题Unit 4 Save the trees教学重点重点词汇、短语、句型和语法的识记、理解和运用教学难点词汇的准确拼读和理解，课文重点句子理解和复述，考点灵活准确运用教学目标改善学生的语音，积累词汇，提高句子翻译（听说读写）的能力。教学步骤及教学容一、课前热身： 1.了解学生本周在校的学习进度和学习情况。2.口语训练Free talk：Talk about why trees are important 3.检查学生上一课的课后作业。二、容讲解： Step 1:

2、 Lead in to this Unit: Imagine what roles trees play, and what the world will be if the trees disappear one day.Step 2: Explain the language points in the reading part and the more practice part.Step 3: Explain the students how to use the present continuous tense properly.Step 4: Do some exercises r

3、elated to this unit 三、课堂小结： 通过今天的学习，帮助学生整体梳理本单元的基础知识，进一步夯实学生对于词汇，短语，句型，语法及综合运用的能力。四、作业布置： 完成讲义要求作业，进一步巩固本节课知识点的理解和综合运用能力。 管理人员签字： 日期： 年 月 日作业布置1、学生上次作业评价： 好 较好 一般 差 备注：2、本次课后作业：课堂小结 家长签字： 日期： 年 月 日Unit 4 Save the trees一、口语训练 A、Talk about why trees are importantTips: Trees are good for We can make. W

4、e also getB、朗读Reading部分二、课程导入Look and imagine:Imagine what roles trees play in the world. What will it be like if there are no trees any more.三、Reading重点和难点解释1 . harmful 有害的Strong sunlight can to your baby .【反义】harmless 无害的；无危险的Dont be frightened these insects are .2. produce 产生；生产The factory cars .

5、【】product 产品；制品The company has just launched (一个新产品).3. major 主要的There are airports in all the cities.【近义】main 主要的【反义】minor 较小的；次要的4. convenient 方便的Lets meet on Friday . Whats the most （方便的时间）for you?【反义】inconvenient 不方便的【】conveniently 方便地We live close to the shops.5. furniture 家具All the furniture （

6、be）very good .【提示】furniture 是不可数名词，表示“一件家具”时需要用a piece of furniture . 如：The only piece of furniture in the room was a large bed.6. imagine 想象；设想Can you life without electricity ?I closed my eyes and I was lying on a beach.【】imagination想象力；想象7. Fight against 意为“对抗；反对；与作斗争”。如：He has tried every way to

7、 the disease.8. know about 意为“了解；知道的事情”。如：How much do you know about (他) ?know more about 意为“更多地了解；更了解”。如：I want to know about the USA.9. in many ways 意为“在很多方面”。如：We can think about the problems .10. “keep + something + 形容词”的结构来表达“使保持（怎么样）的意思。如： You must keep your own room （干净）.11. “make + something

8、 + 形容词”的结构表达“使变得（怎么样）的意思，其中的形容词也可用其比较级形式。如：We should make our city （干净）.Lets make our school （更漂亮）.12. in ones daily life 意为“在某人的日常生活中”，当表示“不同人的日常生活”时，则使用复数lives。如: We have so many solar products in our daily .13. come from 意为“来自”。如：I the south of China.14.比较：for example 与such as这两个短语都可以作“例如”解。for e

9、xample 用来举例说明某一论点或情况，一般只举同类人或事物中的“一个”为例，可位于句首、句中或句末。如：A lot of things are invisible. For example , we cannot see air at all.such as 用来列举事物时，一般列举同类人或事物中的几个例子，插在被列举的事物与前面的名词之间，as 后面不可有逗号。1) Some of the rubbish , food , paper and iron , rots away over a long period of time .2) Many languages , English

10、and French , , have many similar words .15. Look around this room.look around 意为“环顾”。如：Id like to your company.16(be)made of 意为“由制成”。这是一种被动语态，但我们常常把它当做一个固定搭配来记忆。如：The box is made of cardboard.辨析：be made of 与be made from这两个词组都有“由制成”的意思。但使用前者时，成品可以看得出原材料；而。使用后者时，成品看不出原材料。试比较：The chair wood. (木质的椅子可以看出

11、原材料是木头)Paper usually wood. (纸看不出原材料是木头)17. cut down 意为“砍倒；砍伐”。如： His mother the beanstalk yesterday.18. millions of 意为“数以百万计的；大量的”。如：of people around the world eat these foods every day.下面这些词组也十分常用：hundreds of成百上千的 thousands of 成千上万的tens of thousands of 数以万计的 hundreds of thousands of 数以十万计的19. stop

12、doing something 与stop to do somethingstop doing something 是“停止做某事”之意，doing是stop的宾语，表示要停止的动作；stop to do something 意为“停下来开始做某事to 是stop 的状语，表示目的，是要开始做某事。试比较：The two girls stopped （talk） when they saw me.The two girls stopped （talk）to me when they saw me.20. take in 意为“吸收”.如： We must nutritious (营养)food

13、 every day.随堂练习一、词汇和短语有害的_例子_与做斗争 _讨论_树枝_生产_反对 _主要的_氧气_家具_想象 _方便的_搬， 扛_疾病_高频短语：.吸收 _ 来自_例如_确切地说_环顾四周_由制成_大量的_对有用，有好处_二、根据句意和所给的首字母完成下列句子。1.He climbed up the tree to get back the kite among the b_.2.We join the army because we want to f_ for our country.Before we move in our new house, we need to buy

14、 some f_.3.Can you i_ what the world would be like without water?4.The little factory p_ two million pencils every day.三、语言知识运用。1.The doctor gave him some pills to _ the pain.A. take off B. take in C. take on D. take away2.Do some sports every day. It will help you keep _.A. healthy B. healthily C.

15、kindly D. excitedly3.There are _ people here in our city. Actually, there are _ people here in our city.A. Millions of; three million B. Millions of; millionsC. Millions of; three million of D. Million of; three million of4、What time is it now? It is 20:00. I think we should stop _ first.A. having s

16、upper B. have supperC. to have supper D. to having supper5、I bought _ furniture. Really? What _?A a new; is it made of B. a new; does it made ofC. a new piece of; is it made of D. a new piece of; does it made of6、Look at this old bridge! It is made _ stones. A. from B. of C. into D. Up7、I _ the swim

17、ming club if you _ it. A. join; join B. will join; join C. join; will join D. will join; will join8、He heard someone calling his name, so he stopped and _. But he couldnt see any one. A. looked around B. looked up C. looked into D. looked for9、we cant live without trees. They make our lives _. I agr

18、ee. We should stop people _ trees. A. convenient; to cut down B. conveniently; to cut down C. convenient; cutting down D. conveniently; cutting down10、the little dog helps his owner _ many ways _ his daily life. A. in; at B. on; in C. in; in D. on; on四、根据中文提示完成下列句子。1、事实上，他是一个好人。_ _，he is a good man.

19、2、许多家具是由木材做成的。 A lot of _ _ _ _wood。3. 作家们的灵感许多都来源于他们的日常生活。 Most of the writers ideas _ _ their _ _.4、换掉你的热水器，否则你将会吸入过量的有害气体。 Change your water-heater, _ you will _ _ too much.5、如今，许多女性都能兼顾事业和家庭，例如Jane就是其中的一位。 Nowadays, many women have a career and a family Jane _ _.四、More Practice重点和难点解释1. It cover

20、s five and a half million square kilometers of the Amazon Basin and spreads across nine counties. 它覆盖了亚马逊流域550万平方千米的面积，横穿了9个国家（1） cover 为动词，意为“覆盖，遮盖”。Coverwith. 意为“用.把.盖上”，be covered with . 意为“被覆盖着”The road is usually covered with snow in winter. 冬天马路常常被雪覆盖着（2） across 为借此，意为“穿过，横穿”，表示在物体的表面上或沿着某一条线的

21、方向而进行的动作。如过河，过桥，过马路等。He walked across the road carefully. 他小心的过马路。练习：用一厚纸盖在一杯水上 a glasss of water a piece of thick paper2. Many living things lose their homes because of deforestation.许多生物因为森林砍伐失去家园Because of “因为”,介词短语，其后接名词，代词，动名词，what从句等The football match was put off because of the rain 因为下雨，足球赛延期

22、了练习：由于年龄关系他失去了工作 He lost his job his age.3. As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing,结果，世界上动物，鸟类，昆虫和树的种类和数目都正在减少（1） as a result “结果，因此”He didnt practice, as a result he lost. 他没有练习，因此输了（2） the number of “.的数量”，后接复数名词，但谓语动词要用单数形式，常跟large, small

23、等词作表语The number of students in our class is 50. 我们班的学生人数是50拓展：a number of 意为“大量，许多”，等于many, 接复数名词作主语时，谓语动词用复数形式，number 前可加small, large, huge等表示程度A number of students are playing football. 许多学生正在踢足球练习： 1).The traffic was very heavy. ,we didnt arrive on time. 交通十分拥挤，因此我们没能准时到达2). the students in our s

24、chool is 2000. 我们学校的学生人数是2000五、Grammar：现在进行时构成:主语+be+动词ing现在分词形式I+am+v-ing we/ you/ they+are+v-ing he/ she/ it +is+v-ing定义：现在进行时表示现在或当前一般时间正在进行的动作。【No. 1】现在进行时的构成 现在进行时由be+v-ing构成。be应为助动词，初学者最容易漏掉，它应与主语的人称和数保持一致。 【No. 2】现在进行时的应用 (1)当句子中有now时，常表示动作正在进行，这时要用现在进行时。如： They are playing basketball now.现在他

25、们正在打篮球。 (2)以look, listen开头的句子，提示我们动作正进行，这时要用现在进行时。 如： Listen！She is singing an English song.听，她正在唱英语歌。 (2)【No. 3】现在进行时的变化 肯定句式：主语+be( am, is, are)+现在分词+其它. 否定句式：主语+be(am, is, are) +not +现在分词+其它. 一般疑问句：Be(am, is, are) +主语+现在分词+其它？ 特殊疑问句：疑问词+be(am, is, are)+主语+现在分词+其它？ 对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，

26、要根据实际情况回答。有一些特殊变化(或者说以ie为结尾的重读闭音节的动词)的现在分词有3个,:lyinglie, dying die tyingtie 这些以ie结尾要去e再把I变y再加ing随堂练习1、在横线上写出下列动词的现在分词形式。carry _ eat _ burn _ send _ rain _ become _ argue _ escape _ live _ lie _ die _ begin_ put _ sit _ 2、请改正句子中错误的地方。B. I watching television. _C. He is listen to music. _D. They are e

27、at lunch. _E. She is write a letter. _F. Ye Qing is shop. _3. 用所给动词的正确形式填空。Ada: Hi, Bob.Bob: Hi, Ada. What _ (you/ do)Ada: We _ (play) at the beach. Grace _ (fish) and Ivan _ (swim).Bob: What _ (Johnny/ do)? Ada: He _ (listen) the music. There are lots of people here. Carol and Ted _ (play) volleyball. Jenny and Henry _ (play) the guitar. And Dora _ (eat) ice cream.Bob: _