教学ppt课件 Unit16 The life in the ocean.pptVIP

Book2B Unit 16 lesson 63 The life in the ocean Comprehension exercise 1 1.Many whales mainly live on ___. A. seaweed B. small fish C. squid D. coral 2.Fish in the oceans around Antarctica can live below zero because ____. A.they stay at the bottom of the ocean. They are warm -blooded animals. They have a special chemical in their blood. They swim in a large group. 3. The sperm whale has a very good _____. A. sense of hearing B. sense of sight C. sense of touch D. sense of smell 4. Whales ____. A.live on small fish in the ocean B.can eat many fish at a time C.can dive to a depth of 1000 metres D.can see the liquid at the bottom of the ocean Comprehension exercise 2 1.How do fish manage to live in the seas near Antarctica? 2.What is the difference between the sperm whale and other whales? What do other whales eat? 4. What do sperm whales eat? 5. How deep can a sperm whale dive? 6. What body changes occur when the sperm whale dives? 7. How does the sperm whale find its food? Language points: 1.provide and supply 语意相同 ，结构相似 supply sb. Sth. Supply sth. To sb. Provide sb. With sth. Provide sth. For sb. Provide for sth. eg. We should provide for the shortage of energy in the future. Parents must provide / supply their children with food and clothes. 2.at a time eg. Take two pills at a time. He talked for two hours without stopping at a time. 3.feed on = live on 以。。。为生 eg. Most of the Chinese people feed on rice. Feed vt. Feed + object + on Feed + object + to The girl is feeding her cat on milk Eg. The girls were feeding the leaves to silkworms. 4.slow adj.--- v. = to become or make slower eg. Slow down before you reach the crossroads. The train slowed down when it came near to the station. The thick snow slowed our progress. Please warm the milk. The rain has cooled the air. 7.using sound waves = by means of sound waves -ing 短语作状语，表示方式或手段 eg. They cros