选修7Unit3Reading的课件资料.pptxVIP

选修7Unit3Reading的课件资料第1页/共73页第2页/共73页Pre-readingDo you know about whales?第3页/共73页killer whale (虎鲸)第4页/共73页虎鲸/杀手鲸 Killer whales are one of the top predators(食肉动物) in the sea. As a group, killer whales are known to eat fish, squid, seals, sea lions, penguins, even other whales. 第5页/共73页鲸群Orcas are highly social animals that travelin groups called pods. Pods usually consist of 5 to 30 whales, and are led by females. Orca pods often work together to catch a meal.第6页/共73页Baleen whales have no teeth but instead have baleen plates with which the whales can filter the food out of the water.须鲸第7页/共73页On the top of the head, toothed whales have a single blowhole(呼吸孔), the baleen whales have two blowholes, which open only when the whale takes a breath.第8页/共73页annual migrationfeed in summer in cold waters and spend the winter in warmer waters without an abundance of food.Most baleen whales migrate over the entire globe, moving from the Antarctic(南极) where they feed on kill, to the sub-tropics (亚热带), where they breed and spend the winter season. 第9页/共73页baleen whaleWhat is happening in the picture?Killer whales are attacking a baleen whale with whalers waiting by in their boat, harpoon(鱼叉) at the ready.第10页/共73页Backgroundwritercareer writing styletimeplacemain charactermain ideaClancya whaleranecdotes (轶事; 奇闻)at the beginning of the 20th century AustraliaWhalers, killer whales and baleen whalesThe killer whale helped the whalers to kill a baleen whale第11页/共73页ReadingRead the text fast, and fill in the following blanks with the proper names:1. ________ was 16 years of age when he went to work at the whaling station.2. _______ ordered Clancy to go to the boat as there was a whale out there in the bay.3. ________ was swimming by the boat, showing the whalers the way. ClancyGeorgeOld Tom第12页/共73页4. _______ told Clancy that they would return the next day to bring in the body of the whale.5. _______ was carried by the waves further and further away from the whalers.6. _______ knew t