_2020—2021学年人教版英语 Unit 13 SectionA 3a-3b课件-英语九年级全册课件.pptx

Unit 13 Were trying to save the earth!;What do you know about sharks? ;;;;Save the sharks !;2. What will happen to the sharks when people enjoy a bowl of shark fin soup?;Careful reading ;What does the writer think of what the human did? ;Why is it harmful to the environment ?; What do the two numbers mean?;;2. What are they doing ? What have they done?;Can you imagine you are a shark and try to write a letter to people for help?;Is the shark the only animal that is endangered?;Yao Ming, the Chinese basketball star, called on us to protect sharks. ;Thank you !;3b;The sharks are caught.;The man is cutting the fin off.;The sharks (that have no fins) will be thrown back into the ocean again.;If a shark doesn’t have a fin, what will happen?;Save the sharks;听说 一整只鲨鱼 每次 一碗鱼翅羹 切掉 扔回 不仅......而且....... 对环境有害 没有鱼鳍 不再 慢慢死去 在海洋生态系统食物链的顶端 给所有的海洋生物带来危险 濒临灭绝 ;事实上 被捕杀和交易 ......的数量 某些品种 在过去的20到30年 环境保护组织 比如 立法 ......的销售 到目前为止 帮助拯救鲨鱼。;Language points ;;(2)若连接两个成分作主语，其谓语通常与靠近的主语保持一致。 e.g. Not only you but also he has to leave. 不只是你，他也得离开。 ;2. A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。;no longer和not…any longer侧重时间。 e.g. He no longer lives here. = He doesn’t live here any longer. 他不在这儿居住了。(一个时间以前他住 在这儿，过了这个时间，他就离开了。) not…any more侧重程度和数量 e.g. You can drink no more. = You can’t drink any more. 你不能再喝了。(喝酒的量到了一定程 度，不能再继续下去了。) ;3. Sharks are at the top of the food chain in the ocean’s ecosystem. 鲨鱼位于海洋生物系统食物链的顶部。;4. If their numbers drop too low, it will bring danger to all ocean life. 如果它们的数目降至过低，会给所有 海洋生物带来危险。 此句复数形式的numbers表达全海洋中鲨 鱼的总量。当表示数值的高或低时，number要用high或low修饰。;e.g. In that country, the number of children going to school is higher in cities than in towns and village. 在那个国家，??市儿童入学人数比乡镇 及农村要高。 常与number搭配的动词有grow, fall等。 e.g. The number of families that own cars has been growing quickly recently. 近来拥有轿车的家庭数量增长很快。;练习题; 用方框中词的适当形式完成下面的句子。 (1) I think it’s ____