2018届九年级英语全册Unit13We’retryingtosavetheearth第1课时SectionA1a_2d学案.docx

Were trying to save the earth!第一课时Section A(1a2d)【学习目标】1学习并掌握下列单词：litter，bottom，fisherman，coal，public，ugly，advantage，cost，wooden，plastic2能正确使用以下常用表达：the bottom of，be full of，used to do sth.，play a part in doing sth.，clean it up，be badly polluted，too much rubbish and waste，turninto等等3复习used to 的用法，现在进行时和一般现在时。【学习重点】使用我们所学到的知识来谈论污染和环境保护。【学习难点】说得容易做得难，环保意识也要宣传、教育、加强，要注意回收利用变废为宝，学习归纳前缀、后缀词汇的构成。用多媒体给学生播放一些有关环境污染方面的图片视频，然后询问学生对环境污染的看法和观点。Task 1Preview the words on P9798，read the words by phonetic symbols and mark the new words in the text.Finally finish the tasks in 1a.【学法指导】used to(1)used to的意思是“过去经常”，其中的to是不定式符号，不是介词，所以其后接动词原形(不接动名词)。如：He used to live in Paris.他过去一直住在巴黎。(2)used to 与 be used to的用法比较used to 意为“过去经常”，其中的 to 是不定式符号，后接动词原形。如：He used to live in Paris.他过去一直住在巴黎。be used to 意为“习惯于”，其中的to是介词，后接动名词。如：He is used to living in the country.他已习惯于住在乡下。play a part in 在方面起作用。如：A good diet plays a large part in helping people live longer.健康的饮食在帮助人们长寿方面起着非常大的作用。be good for 对有好处 be good to 对好/ 和善 be good at 擅长情景导入生成问题Teacher ：What kinds of pollution do you know ? What do you feel about the pollution?Students : I think there are _.(1) noise pollution；(2) air pollution；(3)water pollution自学互研生成能力Task 1Lets read new words and the phrases.1I can read.(我会读)预习下列单词和短语，争取自己能正确拼读。拼读成功后再在课文中把单词和短语标记出来。litter，bottom，fisherman，coal，public，ugly，advantage，cost，wooden，plastic，takeaway，bin2I can write.(我会写)翻译下列短语：(1)在河床底部at_the_bottom_of_the_river(2)充满了垃圾be_full_of_rubbish(3)把垃圾扔入河中throw_litter_into_the_river(4)尽一份力把它清理干净play_a_part_in_cleaning_it_up(5)土地污染land_pollution(6)产生影响make_a_difference3I can summarize.(我会总结)几个代词的用法：one：泛指，指前面提到过的那类人或事情，指代可数名词，其复数形式用ones; that：特指，指前面提到过的那类物，指代不可数名词。如：The weather in Kunming is better than that in Wuhan.；it：特指，指前面提到过的那个物，用于指可数名词单数或者不可数名词。如：I have a pen，my uncle gave it to me.Task 2Lets listen to the tape and finish 1b，2a，2b.Task 3Lets make conversations and interview.1I can practice.(我会练)根据汉语提示完成下面的句子，每空一词(1)甚至在河的底部也充满了垃圾。Even the bottom of the river is full of rubbish.(2)这个城镇的每个人都应该参与到清扫它当中来。Everyone in this town should play a part in cleaning it up!(3)为了减轻污染，我们应该乘坐公交车或者地铁而不是开车。To cut down air pollution，we should take the bus or subway instead of driving.2I can make conversations.(我会编对话)Roleplay conversations between Jason and Susan.Jason: The air has become really polluted around here.Im getting very worried.Susan: Yes，I used to be able to see stars in the sky.Jason: The problem is that3I can summarize.(我会总结)take，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。(1)take多表示花费时间，常用于It takes sb.some time to do sth.这一句型中，其中it作形式主语。(2)spend多表示花费时间和金钱，主语通常是人，常用于sb.spend(s) some time/money on sth.和sb.spend(s) some time/money (in) doing sth.两种句型。(3)pay多表示花费金钱，主语通常是人，常用于sb.pay(s) some money for sth.句型。 (4)cost多表示花费金钱，主语通常是物，常用于sth.cost(s) (sb.) some money.句型。Task 21Listen to the tape and finish the listening tasks in 1b.Then students listen again and repeat.2Students listen to the tape and finish the listening tasks in 2a，2b.Then listen again and repeat.Task 3Read the contents in 1c and 2c，and finish the tasks in 1c and 2c.Students need imitate listening and have a conversation practice with your partner with the phrase: “used to”【学法指导】Were trying to save the earth! 我们正在竭尽全力拯救地球！try to do try ones best to do 努力去做某事。Even the bottom of the river was full of rubbish. Yes，but people are throwing litter into the river.litter和rubbish都可指“垃圾”，用作不可数名词。rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。如：Throw the rubbish out.把垃圾扔出去。Pick up your litter after a picnic.野餐后将废弃物收拾好。 【备注】交流展示生成新知Preshow：Show in groups.(Time: six minutes)Task 1：First，the students read the words and phrases in groups.Then, read together and sum up the usage of the words in groups，mark the difficult points.(they can ask the teacher for help)2The English teacher asks students to turn to P9798 and read the contents quickly，then translate the phrases in “I can write” in Task 1 in groups.Finally，check the answers.3Students try to summarize the usage of “one，ones，it，that” by looking through 2b and 2d in the textbook in groups.Task 2：1.The teacher plays the tape for the first time and then students fill the blank in 1b according the listening contents.Next，ask two or three students to read out their answers in groups.2Students turn to P98.Then，the teacher plays the tape twice to finish the listening tasks in 2a，2b.Next，the group leader checks their group members answers and discuss them.Task 3：1.First，ss discuss and check the answers in Task 3.Then, set scenes to perform the conversions.Then，sum up the usage of the key words.2Then discuss and set scenes to roleplay conversations between Jason and Susan in groups.3.Students may try to summarize the usage of “take，spend，pay and cost”by previewing and learning by themselves.Improve by showing: Class show.(Time：sixteen minutes)Task 1: 1.I can read.(1)Read together，pay attention to the pronunciation of “bottom” “fisherman” and “advantage”；(2)Sum up and explain some different kinds of pollution；(3)Consolidate the words learning by word games.2I can write.(1)Students translate the phrases into English by answering quickly; (2)Read together；(3)Spot test ：consolidate the usage of phrases by making sentences.3I can summarize. (1) Students sum up the usage of “one，ones，that and it”；(2)Students consolidate the usage of them by exercises.And check the answers and explain.Task 2: Students close the listening materials in the textbooks and use the information in 2a and 2b to roleplay conversations between Jason and Susan in class.The teacher may judge which group is the best.当堂演练达成目标一、词汇练习。A)根据句意及首字母提示填写单词。1We can clearly see fish swimming at the bottom of the river.2The girl seldom goes outside because of an ugly scar(伤疤) on her face.3We should use cloth bags instead of paper or plastic bags.4The villagers used to burn coal to get warm.5Dont litter waste things everywhere.B)用括号内所给单词的适当形式填空。6There is a wooden(wood) table in the middle of the room.7There used to be many fishermen(fisherman) in the village.8I didnt buy the c