单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Section,A,第三课时,(3,a-,4c),Unit,1,3 Were trying to save the earth.,shark n.,鲨鱼,fin n.,鱼鳍,cruel adj.,残酷的；残忍的,harmful,adj.,有害的,3a,Read the passage about sharks and,complete the fact sheet below.,Where shark fin soup is popular,Number of sharks caught and traded every year,How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years,Two environmental groups against“finning”,so,although,if,but,when,1.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 oceans,ecosystem will be in danger.,when,so,3b,Read 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 health.,5.Sharks may disappear one day _,we do not do something to stop the sale of,shark fins.,but,Although,if,Grammar,Focus,Were trying to save the earth.,Present progressive,The river used to be so clean.,Used to,The air is badly polluted.,Passive voice,No scientific studies have shown that shark fins are good for health.,Present perfect,We should help save the sharks.,Modal verbs,Joe:_ 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?,Have,taken,help,considered to be,had,had,have taken,4a,Fill 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 _,(wait)any longer to take action!,think,have come,trying,waiting,can,may/might,could,have to,should,must,would,4b,Fill 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 example,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.,may,must,can,can,have to,And instead of driving to school or work,you _ ride your bike or walk.If its far,you _ take the bus.All these small things _ add up and become big things that _ improve the environment.Lets take action now!,could,can,might,can,I think that everyone,should use public,transportation.,I disagree.Its,difficult for,parents with,young children,to use public,transportation,4c,Make a list of things that people,can do to help the environment and,discuss your list with your partner,1.Save the Sharks!,save作动词，意为“救，拯救，后常跟介词from。,如：He saved the boy from the big fire.,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。,Language points,拓展：save作及物动词，意为“储蓄，贮存；节省。,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。,save作不及物动词，意为“节省；存钱；贮存物品。,如：Some animals save for the future.,一些动物为未来之需储存食品。,Language points,2.When people catch sharks,they cut off their fins and throw the shark back into the ocean.,cut off有以下几种意思：,切断水、电；中断；关掉。,如：Their water supply was cut off,他们的水源被切断了。,切下来；剪下来。,如：They cut off the heads of their captives,他们把俘虏的头砍了下来。,Language points,孤立。,如：The enemy soldiers were,cut off,from their headquarters,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。,剥夺继承权。,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。,Language points,【拓展】关于cut的用法：,cut down 削减；砍倒；杀死；删节；胜过 cut in 插嘴；超车；插入,cut into 打断；侵犯,cut out 切断；删去；停止；关掉,cut back 削减；修剪；美倒叙,cut short缩短；打断；缩减,cut from 从上切下,cut through 刺穿；抄近路走过,cut down on 削减，减少,cut up 切碎；抨击 cut away 切掉，砍掉,Language points,1.(2021潍坊)-Are Betty and LingLing still,living in Beijing?,-No,they _ to Qingdao.,A.will move B.are moved,C.have just moved D.move,2.(2021黔西南)I _ my homework for a,long time,I really miss it.,A.left B.went away from,C.have left D.have been away from,C,D,3.(2021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 saved,4.I was _ in the middle of the telephone call.,A.cut off B.cut down,C.cut in D.cut away,5.People who _ sports must be in condition.,A.join B.join in C.take part in,C,A,C,完成课,后提升,作业。,书到用时方恨少，事非经过不知难。,陆游,