Unit 2 Saving the Earth-Topic 2 All these problems are very serious.-Section A-ppt课件-(含教案+音频)-部级公开课-仁爱科普版九年级上册(编号：20baf).zip

sandstorms Learning Aims: 1.掌握及运用相关的单词与短语； 2.学习并掌握不定代词及副词的用法 ； 3.懂得保护环境的重要性，树立环保 意识，从我做起。 The boy and girls are talking about _. A.different types of sandstorms B.the reasons for sandstorms C.sandstorms in different cities 1b Listen to 1a and choose the best answer. Focus on the main idea of the conversation when you listen for the first time. Listen and answer the questions 1.Whats the weather like today ? Its bad. The wind is so strong . 2.What causes these sandstorms ? People have cut down too many trees. 3.Do we still need to do something to protect the environment ? Yes, we do. 1c Read 1a and complete trees functions. A.Trees can stop the wind from blowing the earth away. B.A lot of water can be saved by forests. C.They can also stop the water from washing the earth away. Trees functions Read 1a and try to find the important phrases and sentences. Group work somebody, someone, something, somewhere anybody, anyone, anything, anywhere none, nobody, nothing, nowhere everybody, everyone, everything, everywhere 一般情况下用于一般情况下用于_ 一般情况下用于一般情况下用于_ 表表_含义含义 可用于可用于_ Indefinite pronoun and adverb 肯定句肯定句 否定句和疑问句否定句和疑问句 否定否定 各种句式各种句式 1.Lily, would you like _ to drink? 2.Cindy is very busy now. She needs _ to help her. 3.Is there _ wrong with your computer? 4.Jim looked for his pencil-box _ , but he didnt find it. 5.I stayed at home last week. I didnt go _. Use someone, something, anything, somewhere, anywhere to fill in the blanks. something someon e anythin g somewhe re anywhere K: wind; sand; anything M: what sandstorms J: cut down; as a result; change into M: how affect J: stopfrom; blow away K: can be saved J: wash away K: is harmful to; although; do something Retell the dialog. 2 Complete the sentences with the correct forms of the given phrases in the box. as a result, change into, do something, stopfrom, blowaway 1.People have cut down such a large number of trees that the land _desert. 2.There are fewer trees left, so the wind always _ the earth _. 3.Air pollution has become a serious problem, so we must _ to reduce it. 4.we should try our best to _ people _ cutting down the trees. 5.In the future, human beings can protect the trees well. _, animals will live a happy life in the forest. has changed intoblows away do something stopfrom As a result 4 A. Listen to the passage and circle the phrases you hear. become weaker destroy the environment disappear rapidly on the earth enough bamboo to eat 4 B. Listen again and fill in the blanks. 1. Now some kinds of animals are becoming _ _ _. 2. Some animals are_ _ _dying out completely. 3. In the past, pandas lived a quiet life and had _ _food. 4. Humans have _ _ _ the importance of protecting animals. 5. We should _ _ _to protect them.do our best in danger of plenty of come to understand fewer and fewer 3 Do you know how sandstorms come into being? Number the pictures and talk about it and write a passage in groups . ( )( )( ) ( ) ( ) ( ) 415 36 2 wash the earth away many trees change into desert forests gone sandstorms come into being cut down trees We learn: 1.Some words: sand, although 2.Some phrases: change into, human being 3.Some sentences: (1)As a result, a lot of rich land has changed into desert. (2)Trees can stop the wind from blowing the earth away. We can: 1. Use the indefinite pronoun and adverb. 2.Talk about the sandstorm and its harm. Summary write a passage about how sandstorms come into being. ThankThank you!you! Unit2 Saving the earth Topic 2 All these problems are very serious. Section A Learning Aims: 1. Learn and use the words and phrases about sandstorms. 2. Learn to use the Indefinite Pronouns and Adverbs. 3. Learn about the importance of protecting the environment. Important and difficult points: 1. Learn to use the Indefinite Pronouns and Adverbs. 2. Learn to describe how sandstorms come into being. Teaching Procedures: Step 1. Lead-in Talk about the weather with students to lead to sandstorms. Step 2. Presentation 1. Listen to 1a and choose the correct answer. 2. Listen again and answer the questions. 3. Read 1a and finish 1c. 4. Read in groups and find the key phrases and sentences. Then complete the exercises. Step 3. Practice Read 1a in pairs and try to retell the dialog. Step 4. Consolidation Fill in the blanks with the correct forms of the given phrases. Step 5. Practice Listen to the passage in 4and finish the tasks. Then check. Step 6. Consolidation Number the pictures in 3. Talk about how sandstorms come into being and write a passage in groups. Step 7. Summary Step 8. Project write a passage about how sandstorms come into being.