2017年秋九年级英语全册Unit13We’retryingtosavetheearth第2课时课件.pptx

Unit 13 Were trying to save the earth!,Section A 3a4c,九年级英语 新目标 人,Have you ever seen a shark?,What has happened to sharks?,The general idea of the article is about . A.water pollution B.environmental protection groups C.the shark,Read for the general idea of 3a.,C,southern China,70 million,over 90 percent,WildAid and the WWF,Read the passage about sharks and complete the fact sheet below.,Read the passage again and fill in the blanks with the words in the box.,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, _ if their numbers drop, the oceans ecosystem will be in danger. 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.,when,so,but,Although,if,教材解读 1.If their numbers drop too low,it will bring danger to all ocean life. if引导的是条件状语从句,谓语动词使用一般现在时表示将来,主句使用一般将来时。 If it doesnt rain tomorrow,we will go fishing.如果明天不下雨,我们就去钓鱼。,2.So far,no scientific studies have shown that shark fins are good for health,so why eat them? so far的意思是“到目前为止”,主句时态使用现在完成时。 So far,we have learned English for six years.到目前为止,我们已经学习英语六年了。 句中that引导的是宾语从句,作动词shown的宾语。be good for的意思是“对有好处”。 Study shows that doing exercise every day is good for our health.研究显示,每天锻炼对我们的健康有好处。,Retell the story according to the following mind map.,Grammar Focus,Fill in the blanks with the correct forms of the verbs.,Joe: _ you ever _ (take) part in an environmental project ? Eric: 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? Eric: I _ (think) more than 1,000 people _ (come) to help out. Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment. Eric: Yes, we cant afford to _ (wait) any longer to take action!,Have,taken,helped,considered,had,had,took,think,came,trying,wait,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,may/might,must,can,can would could have to should must may/ might,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. 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,have to,can/should,can/could,could,would/can,can would could have to should must may/ might,教材解读 1.Yes,we cant afford to wait any longer to take action! afford意为“承担得起(后果);买得起”,afford sth.表示“承受得起某物”,afford to do sth.表示“有能力做,负担得起”。 I dont have enough money.I cant afford the new house.我没有足够的钱。我买不起新房子。,2.Its difficult for parents with young children to use public transportation 本句采用了It is+adj.+for /of sb.to do sth.结构,It作形式主语,动词不定式作句子的真实主语。 【注意】 当形容词修饰动词不定式的内容时,使用介词for;当形容词修饰sb.时,使用介词of。 Its very important for us to study hard.对我们来说努力学习非常重要。 Its kind of you to help me with my English.你太好了,帮助我学习英语。,1.Dont forget to the lights when leaving the room. 2.Riding a bike our health. 3.We have learned thirteen units . 4.How much did you your dictionary yesterday? 5.Have you ever an environmental project?,.用方框中所给词组的适当形式填空,turn off,take part in,pay for,so far,be good for,turn off,is good for,so far,pay for,taken part in,.根据汉语意思完成句子 1.我能买得起这辆汽车。 I can the car. 2.他的哥哥花了20美元买了新鞋。 His brother 20 dollars his new shoes. 3.如果它们的数量降到太低,它将会给全部海洋生命带来危险。 If their numbers too low,it danger to all ocean life. 4.到目前,没有科学研究显示鱼翅对健康有好处,所以为什么吃它们呢? ,no scientific studies that shark fins health,so why eat them?