初中英语九年级 Unit 13 We're trying to save the earth Section A (3a-3b)教案.docx

1、Unit 13 Were trying to save the earth!Section A（3a-3b）Teaching Aims Language goals To have the awareness of protecting sharks and respecting nature. Key words and phrasesshark, fin, cruel, harmful, be harmful to, at the top of, chain, the food chain, ecosystem, industry, law, scientific Key sentence

2、s1. But do you realize that you are killing a whole shark each time you enjoy a bowl of shark fin soup?2. But in fact ,around 70 million sharks are caught and traded in this industry every year.Teaching DifficultiesLet Ss have the awareness of protecting sharks and respecting nature. Teaching AidsCA

3、I, multimedia courseware or other realia that the T needs for teaching Teaching ProceduresTipsStep 1 Warm upWarming up Show Ss pictures of endangered animals in China. T can encourage Ss to say more endangered animals they know and ask them to think about: Why these animals are endangered? What can

4、we do to protect them?Free Talk T asks the first two questions and let Ss answer:What do you know about sharks?Do you think sharks are endangered? Why? For the third question, T can ask Ss to work in groups of four and discuss the question: What do you think might have caused a fall in the number of

5、 sharks? Later, T can encourage Ss to share their answers to the class. Let Ss watch a video about sharks. T can ask Ss to talk about their feelings after watching the video.Step 2 Presentation & ReadingPre-reading Teach Ss some new words and expressions such as shark fin, the food chain and Wild Ai

6、d using the pictures from PPT P9-P13. Show Ss another video about catching sharks and getting shark fins, then ask them to complete the sentences on PPT P15 and P16. After that, T can ask Ss to answer the questions: What will happen to the shark? What should we do?While-readingFirst reading Ask Ss t

7、o read the passage sentence by sentence. T explains the new words and phrases to Ss.Second reading Show Ss the questions on PPT P22 and P23, let them read the passage quickly and find for the answers from the passage.Answers: 1. Sharks are at the top of the food chain in the oceans ecosystem.2. Yes,

8、 I think sharks are endangered. Because when people catch sharks, they cut off their fins and throw the sharks back into the ocean. Without a fin, a shark can no longer swim and slowly dies.3. People catch sharks and cut off their fins and throw them back into the ocean. Without a fin, a shark dies.

9、Third reading3a Ask Ss to complete the chart based on the passage.T may want to ask Ss to do some additional research to find out more about sharks before this lesson. This will enable the Ss to have a better understanding and greater knowledge about sharks.Answers: (from top to bottom)southern Chin

10、aaround 70 millionto develop laws to stop the sale of shark finsWildAid and the WWF.3b T may want to check that Ss understand how to correctly use the conjunctions before having them complete the activity.Note:so: used to say that something is a result of something else that has just been mentioned.

11、although: used to contrast one part of a sentence with another; has the effect of making the main idea in the sentence seem surprising or unexpected.if: used to talk about the circumstances in which something else might happen; gives the condition for something else to happen.but: used to contrast t

12、wo parts of a sentence and show that they are opposite or very different in meaning (usually not used at the beginning of a sentence in formal writing.)when: used to talk about the time at (or during) which something happens.Answers: 1. when 2. so 3. but 4. Although 5. ifPost-reading Show the summar

13、y of the passage to Ss and ask them to fill in the blanks with proper words from their memory. Before T shows the answers, T can ask Ss to check the answers with their partners first.Answers: (from left to right, from top to bottom)southern, cruel, cut off, swim, harmful, top Show Ss a video about “

14、No eating shark fins”. T can tell Ss that every creature has its own value of existence, people need to protect the animals and maintain the ecological balance.Step 3 Language points learning“the numbers of. ”是“the number of”的复数形式。the number of.与a number of.的区别是：the number of.的意思是“的数量”，“the number o

15、f+可数名词复数”作主语时，谓语动词用单数形式。a number of.的意思是“一些；若干”，“a number of+可数名词复数”作主语时，谓语动词用复数形式。“fall by” 意为“下降了”，by表示变化的幅度。fall to意为“下降到”。Step 4 Exercises,Summary & Homework Exercises Do the exercises from PPT P33-P35Homework Read and recite the passage in 3a. Do the exercises in students book.Teaching Reflecti

16、onIn this period, we should review the present progressive tense, present perfect tense, passive voice, modal verbs and the structure “used to” in reading and speaking activities. We will learn some new words and expressions about environmental protection in language learning, so it is necessary to get the students to pay enough attention to the new words and try to collect more of them.