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1、Period 2 3a-4cSectionAUnit 13 Were trying to save the earth!Do you like animals?Do you know the shark? Do you know why the people killed the sharks?Do you hear about the shark fin soup? Now many sharks are killed for this kind of soup. Sharks are fewer and fewer. What should we do? Lets come to 3a.

2、Lead in The general idea of the article is about_.A. air pollutionB. the sharksC. water pollution Read for the general idea of 3a.B 3a.Read the passage about sharks and complete the fact sheet below.In Southern China. Around 70 million. Over 90 percent. WildAid and the WWF. Where shark fin soup is p

3、opular 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 yearsTwo environmental groups against “finning”Two environmental groups against “finning” 3b. Read the passage again and fill in the blanks with the words in the box.1.

4、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 scient

5、ific 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.so, although, if, but, whenwhensobutAlthoughifSave th SharksWhyEnjoy shark fin soup=kill a whole sharkHowBe cut off fins; d

6、ie slowly; the top of the food chain; bring danger to all Whatask to develop laws Retell the passage according to the key words in the form below. Many _ _ of shark fin soup. This famous and expensive dish is especially popular in _China. But do you realize that youre killing a whole shark each time

7、 you enjoy a bowl of shark fin soup? When people catch sharks, they cut off their fins and throw the shark back into the ocean. This is not only cruel,but also harmful to the environment._ a fin, a shark can no longer swim and slowly_. Sharks are at the top of the food chain in the oceans ecosystem.

8、 If their _drop too low, it will bring _to all ocean life. Many believe that sharks can never be _because they are the strongest in their food chain. But in fact, around 70 million sharks _ _and traded in this industry every year. The numbers of some kinds of sharks _ _by over 90 percent in the last

9、 20 to 30 years. Environmental protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. They have even asked governments to develop laws to stop the sale of shark fins. So far, no scientific studies _ _that shark fins are good for health, so why eat t

10、hem? Help save the sharks!Save the Sharks!Complete the passage without looking at your book. 答案答案 have heard, southern, Without, dies, numbers, danger, endangered, are caught, have fallen, have shownGrammar FocusWere trying to save the earth.Present progressiveThe river used to be so clean. used toT

11、he air is badly polluted.Passive voiceNo scientific studies have shown that shark fins are good for health.Present perfectWe should help save the sharks. Modal verbs4a.Fill in the blanks with the correct forms of the verbs in brackets.Joe: _you ever_ (take) part in an environmental project?Ken: Yes,

12、 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?Ken: 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 environm

13、ent.Ken: Yes, we cant afford to _(wait) any longer to take action!Havetakenthinkhelpedconsideredhashadtookcametryingwait4b. 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

14、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 it s 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

15、far, you_ take the bus. All these small things _add up and become big things that_ improve the environment. Let s take action now! can, would, could, have to, should, must, may/mightmay/mightmust/shouldcancan/couldhave tocouldcanshouldwouldHomework 1. Read and write the new words and expresses. 2. Retell 3a.