英語北師大版選修7 Unit20 Lesson 3 《Scientific Breakthroughs》教案 1

111 Unit 20 Lesson 3 Scientific Breakthroughs Teaching aims 1.words and phrases： 2.language points in the text 3.reading strategies 4.exercises about text 5.vocabulary:phrasal verbs and compound words Teaching time Two periods(兩課時連堂) Teaching process Step 1 Revision Review the new words of lesson 2 and have a diction Step 2 learn the new words of lesson 3 1.ask some students to read the new words first and correct their pronunciation 2.play the tape and have them read after the tape 3.give them a few minutes to read the new words freely, tell them if they can’t read the words, encourage them to ask the teacher . step 3 reading 1.discuss the pictures and talk about the scientists’ major discoveries. 2.do exercise 2 by themselves. 3.let the students look at Reading Strategies and check their answers to exercise 1 and 2. 4.play the tape twice, and do exercise 4. step 4 language points 1.think over v.仔細考慮, 重新考慮 2.be aware of v.知道, 意識到 eg: Everybody is aware of the importance of study. 每個人都意識到了學(xué)習(xí)的重要性。 I was not aware of the fire. 我沒有意識到火。 3.such as adv.例如...,象這種的, 諸如..., 譬如說; 象...那樣的; 如此...以致 4.a piece of mass 5.an amount of adj.許多, 相當數(shù)量的; 一些 6.theory of relativity 7.for example 8.at the speed of以...的速度 at a speed of eighty miles an hour 以每小時80英里的速度 at full[top] speed 用全速, 開足馬力盡力地; 盡快地 9.be about to v.將要, 正打算 eg: The chorus is about to sing. 合唱團就要開始唱了 10.in fact 11.away from遠離 12.the further away galaxies are, the faster they move. 13.go on holiday正在休假[去休假] 14.come back v.回來, 在記憶中重現(xiàn), 復(fù)原, 恢復(fù), 反駁 15.throw… away v.扔掉, 丟棄 16.out of the ordinary不平常的, 非凡的,例外的 17.a few years later 18.look for 19.so…that… 20.turn on v.開啟, 變得興奮, 突然裝出, 開始 21.go out v.出去, 熄滅, 過時, 罷工, 向往, 辭職, 倒塌 22.be interested in對...感興趣 23.at the time當時, 在那個時候 24.make the first flight 25.make great contributions to…貢獻 step 5 vocabulary 1.phrasal verbs a)exercise 7 ask the students to read the list of phrasal verbs, and then let them do the exercise by themselves, and check their answers. b)ask ten students to do the exercise on the blackboard, then correct their answers. c)read the questions in exercise 9, and then play the cassette twice. d)ask six students to answer the questions 2.compound words(合成詞) a)合成名詞：名詞+名詞 spaceship classroom 動詞+介詞 turn-off 形容詞+名詞 highway 合成動詞：safe-guard mass-produce ill-treat 合成形容詞：cold-blood hand-made hard-working b)do exercise 5 orally c)do exercise 3 ,4,5 and 6 in page 69 step 6 Homework Exercise 2 in page 70 111