九年級(jí)英語(yǔ)下冊(cè)Unit13We'retryingtosavetheearthSectionA第2課時(shí)3a_4c教案新版人教新目標(biāo)版

1、Section A 第2課時(shí)（3a4c）類別學(xué)習(xí)重點(diǎn)重點(diǎn)單詞cruel, harmful, industry, law, scientific, afford重點(diǎn)短語(yǔ)hear of, cut down, be harmful to, the food chain, at the top of, take part in, turn off, pay for, take action重點(diǎn)句式1. But in fact, around 70 million sharks are caught and traded in this industry every year.2. The number

2、s of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.3. So far, no scientific studies have shown that shark fins are good for health, so why eat them?課前預(yù)習(xí)寫一寫1.殘酷的cruel 2.有害的harmful 3.工業(yè)industry4.法律law 5.科學(xué)的scientific 6.買得起afford譯一譯1.聽說(shuō)hear of 2.切掉cut off 3.食物鏈the food

3、chain4.對(duì)有害be harmful to 5.在頂部at the top of背一背1.有些種類的鯊魚的數(shù)量在最近二三十年中下降了百分之九十以上。The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.2.到目前為止，沒有科學(xué)研究表明鯊魚的魚鰭對(duì)健康有益，所以為什么吃它們呢？So far，no scientific studies have shown that shark fins are good for health, so why eat them?

4、新課導(dǎo)入Teacher: Have you heard of the shark fin soup? It comes from sharks. People catch the sharks, cut off the fins and throw the sharks back into the ocean. They are cruel and destroying the environment. If you want to learn more about it, lets learn the passage on P99.新課展示【完成教材3a3b的教學(xué)任務(wù)】1.要求學(xué)生快速默讀短

5、文，熟知大意，并完成課本3a的任務(wù)，然后邀請(qǐng)幾位同學(xué)給出自己的答案，全班一起檢查討論。2.先邀請(qǐng)幾位同學(xué)朗讀短文，教師要注意語(yǔ)音，及時(shí)糾正錯(cuò)誤，然后播放錄音，全班同學(xué)一起跟讀。3.再讀短文，完成3b的任務(wù)，教師引導(dǎo)復(fù)習(xí)so, although, if, but, when等連詞的用法。4.短文內(nèi)容鞏固練習(xí)，教師將短文中重點(diǎn)短語(yǔ)及詞匯空出，讓學(xué)生不看書補(bǔ)充完成。【完成教材Grammar Focus4c的教學(xué)任務(wù)】1.學(xué)生朗讀語(yǔ)法句子，教師引導(dǎo)學(xué)生歸納語(yǔ)法知識(shí)，并完成相對(duì)應(yīng)的練習(xí)。2.學(xué)生獨(dú)立完成4a4c的任務(wù)，并列出清單。【語(yǔ)法提要】1.savesave作動(dòng)詞，意為“救;拯救”，后常跟介詞fro

6、m。例句：He saved the boy from the big fire.他從大火中救出了那個(gè)男孩。2.cut off（1）切斷（水、電）；中斷；關(guān)掉。例句：Their water supply was cut off他們的水源被切斷了。All communications are cut off一切通訊都被切斷了。（2）切下來(lái)；剪下來(lái)。例句：The rope is two feet longer than we needed，so we cut off the extra length繩子比我們需要的長(zhǎng)兩英尺，因此我們把多余的給剪下來(lái)了。新課展示3.take part intake p

7、art in意為“參加”，其后接名詞或動(dòng)名詞。例句：Did you take part in any activity? 你參加過(guò)任何活動(dòng)嗎？辨析：join, join in 與take part injoin指參加某黨派、團(tuán)體或參軍等，并且成為其中的一員He joined the army last year.他去年參軍了。join in指參加某項(xiàng)活動(dòng)，但多指正在進(jìn)行的活動(dòng)I hope you can join in the discussion. 我希望你能參加這次討論。take part in指參加某項(xiàng)活動(dòng)（比賽）并在活動(dòng)中起一定的作用Did you take part in the s

8、ports meeting yesterday?你昨天參加運(yùn)動(dòng)會(huì)了嗎？【問(wèn)題探究】（C）1.（福建泉州中考）If we take a shower instead of bath, more water_.I agree with you.A. has saved B. can save C. can be saved（A）2.I was_in the middle of the telephone call.A. cut off B. cut down C. cut in（C）3.People who_the sports meeting must be in good condition.

9、A. join B. join in C. take part in活學(xué)活練1. 凱特從樹叢中剪下一些花。Kate cut off some flowers from the bush.2. The old lady donated all the money she B to the sick boy.A. has save; saving B. has saved; saveC .have save; saving D. have saved; save3.（甘肅白銀中考）Many young people took part in A trees on Tree-Planting Day.A. planting B. plants C.to