2019春九年級英語下冊 Unit 4 Life on Mars（第2課時）Reading 1教案 （新版）牛津版

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1、Unit 4 Life on Mars 第二課時　Reading (1) ◇目標導航◇ 類別 課時要點 重點單詞 polluted adj.被污染的 rapid adj.快的,迅速的 increase n.增加 passenger n.乘客 uncomfortable adj.使人不舒服的;不舒適的 tasty adj.味道好的 specially adv.專門地,特地 compare vt.& vi.比較 challenging adj.挑戰(zhàn)性的 rapidly adv.快地,迅速地 重點短語 at present 現(xiàn)在 float off 漂浮 in

2、some ways 在某些方面 be full of 充滿 make friends with 交朋友 tie...to... 把……和……捆起來 get lost 迷路 make a list of 列……的清單 重點句型 1.At present,our spacecraft are too slow to carry large numbers of passengers to Mars.目前,我們的宇宙飛船太慢了,無法運送大批的乘客去火星。 2.People would have to wear boots that are specially designed to

3、prevent themselves from floating off into space.人們必須穿上特制的靴子以阻止自己飄入太空。 3.The gravity on Mars is only about three-eighths of that on the Earth.火星上的重力大約只有地球上的八分之三。 4.Compared with life on the Earth,life on Mars would be better in some ways.與地球上的生活相比,火星上的生活在某些方面要更好些。 5.Every student would have a comp

4、uter at home connected to an interplanetary network.每個學生家里都會有一臺電腦與星際網(wǎng)絡連接。 教學重點 1.讓學生掌握基本的四會單詞、短語及句型。 2.讓學生了解未來在另一個行星上生活的情境。 教學難點 1.讓學生識別并列出地球生活與火星生活的不同之處。 2.培養(yǎng)學生的閱讀技巧,讓學生掌握文章內(nèi)容,了解文章的框架和結(jié)構(gòu)。 ◇教學過程◇ 預習指導 一、方法指導 預習Page 52~53的文章,并預習課后新單詞,自主背默。 二、預習檢測 Ⅰ.漢譯英 1.現(xiàn)在　at present　? 2.乘宇宙飛船　in spa

5、cecraft　? 3.漂浮　float away　? 4.在某些方面　in some ways　? 5.使某人做某事　make sb do sth　? 6.充滿　be full of　? 7.總數(shù)　the total number of　? 8.交朋友　make friends with　? 9.飛到……　fly to　? 10.把A和B捆起來　tie A to B　? 11.迷路　get lost　? 12.列……的清單　make a list of　? Ⅱ.根據(jù)句意及漢語提示完成單詞 1.There are thousands of stars and 　plan

6、ets　(行星) in space.? 2.He came here 　specially　(專門地) to get a grammar book.? 3.With the 　rapid　(快速的) development of science and technology,our life is more and more convenient.? 4.More and more 　passengers　(乘客) would like to take the underground instead of driving cars.? 5.Some actions must be ta

7、ken to control the 　increase　(增加) of the population in the world.? 課堂教學 Step 1 情景導入 老師利用圖片呈現(xiàn)本課新單詞與短語,幫助學生掌握單詞釋義。 Step 2 閱讀前 1.快速瀏覽Part A的文章,討論下面的問題。 Our Earth is becoming more and more crowded and polluted,so where can we stay? 2.小組合作,完成Page 54中Part B1和Part B2的練習。 Step 3 閱讀中 1.聽Part A的錄音,然后

8、快速閱讀,小組合作,回答下列問題。 (1)Why do people need to move to Mars? The Earth is becoming more and more crowded and polluted.　? (2)How long does it take to fly to Mars at present? It would take months.　? (3)What would the flight to Mars be like by the year 2100? The journey might take about 20 minute

9、s in spacecraft that travel at the speed of light and the journey might be uncomfortable.　? (4)What would food on Mars be like? Food would be in the form of pills and would not be so tasty.　? (5)Where might people live on Mars? People might live in houses with huge comfortable rooms.　? (6

10、)What would schools be like on Mars? There would be online schools with “e-teachers.”　? (7)What does the writer think of life on Mars? Life on Mars would be interesting as well as challenging.　? 2.再次快速閱讀,劃分文章的篇章結(jié)構(gòu),找出各段的關鍵詞。 3.老師提出問題讓學生進一步思考。 參考示例 T:What does the writer think of the life o

11、n Mars? S:He thinks it would be interesting as well as challenging. T:Do you agree with him?Why or why not? Step 4 閱讀后 1.讓學生自由朗讀短文。 2.小組合作,討論歸納火星生活的優(yōu)缺點。 3.根據(jù)關鍵詞,復述課文。 限時訓練 根據(jù)句意用所給詞的適當形式填空 1.There is less air 　pollution　(pollute) in town than in the city.? 2.We should keep water from 　being

12、　(be) polluted.? 3.By next week,we 　will/are going to visit　(visit) three places of interest.? 4.The world as we know is going to change 　rapidly　(rapid).? 5.　Compared　(compare) with when we were at school,children in primary school seem to learn more interesting things.? 板書設計 1.large numbers o

13、f表示“許多;大量的”,相當于a large number of。a number of意為“許多……”,修飾可數(shù)名詞復數(shù)。作主語時,謂語動詞用復數(shù)形式。其中的number前可用large,small等詞修飾,表示程度。the number of意為“……的數(shù)量”,后跟復數(shù)名詞,作主語時,謂語動詞要用單數(shù)形式。 2.three-eighths意為“八分之三”。分數(shù)與名詞搭配時,之間常用介詞of,即“分數(shù) + of + 名詞”結(jié)構(gòu)。作主語時,謂語動詞的單復數(shù)根據(jù)of后面的名詞而定,如果名詞是復數(shù),謂語動詞用復數(shù)形式;如果名詞是單數(shù)或不可數(shù)名詞,謂語動詞用單數(shù)形式。 英語中分數(shù)表達法:分子是基

14、數(shù)詞,分母是序數(shù)詞,如果分子大于1,分母用復數(shù)形式,在分子與分母之間可加連字符也可不加連字符。 3.辨析especially和specially。 (1)especially是副詞,意為“尤其,特別”,通常用來對前面所述的事情進行進一步的說明或補充。 (2)specially是副詞,意為“專門地;特地”,強調(diào)唯一目的。 4.prevent作動詞,意為“防止;阻止”。prevent...from...意為“防止……做……”。 注意:prevent/stop/keep sb from doing sth,意為“阻止某人做某事”,其中keep sb from doing sth中的from不能省略,stop/prevent中的可以省略。 ◇教學反思◇ 本課時主要以閱讀和討論為主。老師提出問題,引導學生有針對性地閱讀課文,提高了他們收集信息的能力。另外,在實際的英語教學中,老師利用其他相關學科的知識來加深學生對英語知識的掌握,并且讓學生自己總結(jié),進一步培養(yǎng)其學習和歸納能力的方法。 4