在第二課時學習結束時，學生能夠：1、發(fā)現(xiàn)、歸納if 條件狀語從句的語意功能 。2、通過習題的操練 ，正確運用主句和從句的時態(tài)。3、通過對災難的應急措施的表達 ，正確恰當?shù)氖褂胕f條件狀語從句。4、培養(yǎng)學生在遇到突發(fā)緊急事件時，自救和幫助他人的意識。
Think abut it
If we learn mre abut DNA, we will be able t treat mre diseases.
Is this a real situatin? Can we learn mre abut DNA?
Read the passage and underline the sentences like this.
If we d nt use them crrectly, they can cause serius health prblems.
If we discver mre abut the human bdy, we can help peple live lnger and better lives.
Which part f the sentence, which clause, expresses the cnditin?
Which expresses the result if the cnditin happens?
What’s the verb in the if-clause?What’s the verb in the result clause?
We can als use a mdel verb, such as can , in the result clause.
If we discver mre abut the human bdy, we can help peple live lnger and better lives.
Cmplete the sentences with the crrect frm f the verbs
If yu g t bed late, yu will feel tired the next day.Yu can jin the Chess Club if yu are interested in it.We will stay at hme if it rains tmrrw.If I finish the wrk early, I will play basketball with yu.
If I have a ten-day hliday,___________.
Share yur ideas.
If a famus scientist calls me, ____________
Wrk in grup f fur and have a discussin. Chse ne f the three tpics which yur grup members are interested in and list what yu shall d r nt d if an earthquake/fire/fld happens s that we will be able t survive.
What can/will yu d if there is __ ?
Save peple arund usArrange t help thersVides are just the beginningEncurage mre peple t take actins
1. Chse ne f the tpic and write a shrt passage abut what yu will d if __________.2. 完成Wrkbk Lessn 22 的練習。
Thank yu fr watching~
Getting ready & Reading
Have yu seen this picture? What’s this?
NASA?n?23rd, July?annunced?the?discvery?f?Kepler-452b,?the?mst?Earth-like?planet?ever fund.?Lcated?1,400?light-years?frm?ur?planet,?NASA?called?it “Earth?2.0”,?because?it’s?the first?planet?discvered?in?the?habitable?zne?f?a?G?star?similar?t?ur?sun.
7月23日，美國國家航空航天局(簡稱為NASA)宣布發(fā)現(xiàn)開普勒-452b，是迄今為止與地球最為相近的行星。該行星距離地球1400光年，NASA將其命名為“地球2.0”，因為它是第一顆人類在宜居帶里與太陽相似的恒星附近發(fā)現(xiàn)的行星。
1.與太陽相似的恒星被發(fā)現(xiàn)
這顆系外行星編號Kepler 452b，其直徑約為地球的1.6倍，與恒星之間的距離與日-地距離相近。恒星Kepler 452距離地球大約430秒差距(約合1400光年)，位于天鵝座?！　√煳膶W家稱，這是至今為止發(fā)現(xiàn)的最接近地球的“孿生星球”，跟地球的相似指數(shù)為0.98，并且有可能擁有大氣層和流動水?！　ASA說這個星球上可能有活火山，有存在生命的可能性，行星應該有60億年歷史，地球為45億年。
An internatinal team f scientists said they have discvered the farthest galaxy ever measured in the universe.By using a pwerful instrument called MOSFIRE n the Keck I telescpe at the Keck Observatry in Hawaii, the team thught that the galaxy, EGS-zs8-1, frmed mre than 13 billin years ag at a time when the universe was nly five percent f its present age.
科學家使用位于夏威夷的凱克天文臺的望遠鏡發(fā)現(xiàn)了新星系，并將這個星系命名為EGS-zs8-1。它是迄今發(fā)現(xiàn)的最遙遠星系，打破了此前的觀測紀錄。
2.宇宙中最遙遠星系被發(fā)現(xiàn)
What are the peple ding in the pictures? What d yu think they are trying t discver?
What are the peple ding in the fllwing pictures? What d yu think they are trying t discver?
Example: I think the persn in Pht A is bserving the stars. Maybe he is trying t discver a new star.
Key Wrds: Discveries chemistry, d experiments, electricity, health, lab, machine, bserve, physics, research, space, technlgy
Listen and practice.
1.D yu knw any ther scientific discveries?2.Can yu name sme famus nes?3. Amng these discveries, which d yu think are the mst imprtant nes?
Lk at yur wrksheet after class. PPT(26—32)
D yu knw any f them? What’s their majr achievements?
Tu Yuyu has becme the first Chinese wman t win a Nbel Prize(2015), fr her wrk in helping t create an anti-malaria (['?nti?m?l'e?ri?] 抗瘧疾的 ) medicine.
屠呦呦 (1930--)藥學家抗瘧疾:青蒿素和雙氫青蒿素
2. Many children died very yung because f different diseases. Nw it can be cured(治愈) easily with it.
1. It’s a discvery in physics（身體）. It can g right thrugh sme things like skin(皮膚） and wd but stp by bnes r metal.
3. It’s the building blck f life and we knw a great deal abut what we get frm ur parents frm it.
1st reading:Read and find the name f the picture A,B and C and make sure whether yur match is right r nt.
The first antibitic: Penicillin 青霉素，盤尼西林 It can wipe ut the infectin消除感染
Alexander Fleming亞歷山大·弗萊明
3 When did these things happen? Write the crrect years.
2nd reading
DNA structureduble ciled spiral structure (雙線圈螺旋結構）
Crick Watsn克里克 沃森
Wilhelm Rentgen X-ray
1845---1923Germany
What effect d these discveries have?
A lt f diseases can be cured easily with it.
pass n certain characteristics, be able t treat mre disease.
Dctrs treat brken bnes easily with X-rays machines.
3rd reading
DNA(Crick & Watsn)
X-rays(Wilhelm Rentgen)
1. the building blck f life 2. pass n certain characteristics3. be able t treat mre disease
The text is abut…
A lt f diseases can be cured easily with it.
Can yu answer these questins?
Finish them n the wrksheet.
1. What can cure a lt f diseases easily?What passed n certain characteristics frm parents t children?3. What can scientists knw frm the map f ur DNA?4. Wh was the first t study and name X-ray?5. What prize did the discverer f X-ray award?
Answer the fllwing questins
Antibitics, X-rays. (DNA, maybe in the future.)
1. What can cure a lt f diseases easily?
2. What passed n certain characteristics frm parents t children?3. What can scientists knw frm the map f ur DNA?
It tells them a great deal abut what getfrm ur parents.
4. Wh was the first t study and name X-ray?5. What prize did the discverer f X-ray award?
Wilhelm Rentgen.
The first-ever Nbel Prize in Physics.
If Mary’s hand is cut by a knife fr 3days, what will she d?If yur leg gets hurt in P.E, what shuld yu d?If yu have a headache, what can yu d? “Dctr, can yu explain what antibitic is fr me?” asks ne patient.…….
Activity 1: If yu’re a dctr, Please treat! (Pair Wrk)
Which discvery d yu think is the mst imprtant accrding t the text?
Example: A: I think X-rays are the mst imprtant discvery.B: Why?A: Because with X-rays, dctrs can help fix brken bnes mre easily. …..
Activity 2:
Finish Ex 1 n P99.If yu live in schl r travel arund fr mre than 10 days, what will yu take in yur medicine bag（急救包）? Discuss with yur partner, and write dwn n the wrksheet.
Name: Niclaus Cpernicus 哥白尼Achievement: helicentric thery 日心說
1473－1543 Pland
Name: Galile 伽利略Achievement: Principle f inertia 慣性原理
1564－1642 Italy
Newtn牛頓law f gravitatin萬有引力定律
1643—1727 Britain
Michael Faraday 邁克爾·法拉第Electrmagnetic inductin 電磁感應
1791～1867 Britain
William Harvery威廉·哈維 Bld circulatin血液循環(huán)
1578-1657 Britain
Rbert Kch 羅伯特·科赫 Pathgenic bacteria (病原細菌)
1843----1910 Germany
Wilhelm Knrad Rntgen威廉·康拉德.倫琴X-rays (X射線)
1845---1923

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