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1、Section A 第三课时第三课时(3a -4c) Unit 13 Were trying to save the earth.人教版 九年级下册shark n.鲨鱼鲨鱼fin n.（鱼）鳍（鱼）鳍cruel adj.残酷的；残忍的残酷的；残忍的harmfuladj.有害的有害的3a3aRead the passage about sharks and complete the fact sheet below.Where shark fin soup is popularNumber of sharks caught and traded every yearHow much the nu
2、mbers of some kinds of sharks have fallen in the last 20 to 30 yearsTwo environmental groups against “ finning”soalthoughifbutwhen1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, _their numbers drop, the o
3、ceans ecosystem will be in danger. whenso3b3bRead the passage again and fill in the blanks with the words in the box.3. Many think that sharks are too strong to be endangered, _ they are wrong.4. _ there are no scientific studies to support this, a lot of people believe that shark fins are good for
4、health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. butAlthoughifGrammarFocusWere trying to save the earth.Present progressiveThe river used to be so clean.Used toThe air is badly polluted.Passive voiceNo scientific studies have shown that shark fins are
5、good for health.Present perfectWe should help save the sharks.Modal verbsJoe: _ you ever _ (take) part in an environmental project?Ken: Yes, I have. I _ (help) with a Clean- Up Day last year. It was _ (consider) the biggest clean-up project this city _ ever _(have).Joe: How many people _ (take) part
6、?Havetaken helpconsidered to behadhadhave taken4a4aFill in the blanks with the correct forms of the verbs in brackets. Ken: I _ (think) more than 1000 people _ (come) to help out.Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment.Ken: Yes, we cant afford to _ (
7、wait) any longer to take action!thinkhave cometryingwaitingcanmay / mightcouldhave toshouldmustwould4b4bFill in the blanks with the appropriate modal verbs from the box. People _ think that big things _ be done to save the earth. Many forget that saving the earth begins with small things. For exampl
8、e, you _ save electricity by turning off the lights when you leave a room. You _ also use reusable bags instead of plastic bags. I think its a great idea that you now _ pay for plastic bags in some stores. maymustcancanhave toAnd instead of driving to school or work, you _ ride your bike or walk. If
9、 its far, you _ take the bus. All these small things _ add up and become big things that _ improve the environment. Lets take action now!couldcanmightcanI think that everyone should use public transportation.I disagree. Its difficult for parents with young children to use public transportation4c4cMa
10、ke a list of things that people can do to help the environment and discuss your list with your partner1. Save the Sharks! save作作动词动词，意为，意为“救，拯救救，拯救”，后常跟，后常跟介词介词from。如：如：He saved the boy from the big fire. 他从大火中救出了那个男孩。他从大火中救出了那个男孩。 The dog saved the girls life. 那只狗救了女孩的命。那只狗救了女孩的命。Language points拓展：
11、拓展：save作作及物动词及物动词，意为，意为“储蓄，贮存；节省储蓄，贮存；节省”。如：如：She saved her strength for the last minutes of the race.她保存体力，准备在比赛的最后几分钟冲刺。她保存体力，准备在比赛的最后几分钟冲刺。save作作不及物动词不及物动词，意为，意为“节省；存钱；贮存物品节省；存钱；贮存物品”。如：如：Some animals save for the future. 一些动物为未来之需储存食品。一些动物为未来之需储存食品。Language points2. When people catch sharks, the
12、y cut off their fins and throw the shark back into the ocean.cut off有以下几种意思：有以下几种意思：切断（水、电）；中断；关掉。切断（水、电）；中断；关掉。如：如：Their water supply was cut off 他们的水源被切断了。他们的水源被切断了。 切下来；剪下来。切下来；剪下来。如：如：They cut off the heads of their captives 他们把俘虏的头砍了下来。他们把俘虏的头砍了下来。 Language points孤立。孤立。如：如：The enemy soldiers we
13、re cut off from their headquarters敌军同总部的联系被切断，成了孤军。敌军同总部的联系被切断，成了孤军。The flood cut off the villagers from the rest of the world洪水切断了村民们与外界的联系。洪水切断了村民们与外界的联系。 剥夺继承权。剥夺继承权。 如：如：He has cut his son off without a penny 他取消了儿子的继承权，一便士也不给。他取消了儿子的继承权，一便士也不给。 Language points【拓展拓展】关于关于cut的用法：的用法：cut down 削减；砍倒
14、；杀死；删节；胜过削减；砍倒；杀死；删节；胜过 cut in 插嘴；超车；插入插嘴；超车；插入 cut into 打断；侵犯打断；侵犯 cut out 切断；删去；停止；关掉切断；删去；停止；关掉 cut back 削减；修剪；（美）倒叙削减；修剪；（美）倒叙cut short缩短；打断；缩减缩短；打断；缩减 cut from 从从上切下上切下 cut through 刺穿；抄近路走过刺穿；抄近路走过 cut down on 削减，减少削减，减少 cut up 切碎；抨击切碎；抨击 cut away 切掉，砍掉切掉，砍掉Language points1.(2014潍坊潍坊) - Are Bet
15、ty and LingLing still living in Beijing? - No, they _ to Qingdao.A. will move B. are movedC. have just moved D. move2. (2014黔西南黔西南) I _ my homework for a long time, I really miss it.A. left B. went away fromC. have left D. have been away fromCD3.(2013福建泉州福建泉州)- If we take a shower instead of bath, more water _. - I agree with you.A. has saved B. can save C. can be saved4. I was _ in the middle of the telephone call.A. cut off B. cut downC. cut in D. cut away5. People who _ sports must be in condition.A. join B. join in C. take part inCAC完成课后提升作业。完成课后提升作业。