【冀教版】八年级英语下册同步备课课件：Unit3 Animals Are Our FriendsLesson17.pptVIP

Listen and tick the correct answers. 1. “Save the tigers ” is . a group of volunteers B. a company C. a zoo 2. Tigers are symbols of . Friendship and peace B. strength and courage C. danger and balance 3. The number of tigers in the wild is . A. not changing B. increasing C. decreasing A B C Read the passage and answer the questions. How did the number of tigers changing? What is the reason tigers are important to the environment? Why do people hunt and kill tigers? At the beginning of the 20th century, the number of tigers in the wild was around 100 000. But today that number has dropped to a few thousand. The tiger is at the top of the food chain. It helps keep the number of other wild animals in balance. Some people hunt and kill tigers for money. Practice with the new phrases 20th century, Texas red wolves lived in the land comfortably. But later in order to develop agricultural, a lot of American farmers opened up wasteland(荒地). They large forest . the environment was damaged in a very short time. The habitat(栖息地) of Texas red wolves was smaller and smaller. The ecology(生态) was not . Meanwhile, the development of animal husbandry(畜牧业) makes Texas red wolf became an enemy of the American farmers. The farmers have hunted them a lot. Until in 1970, the last Texas red wolf died in the bay near Texas. In the world, many species are of disappearing like Texas red wolves. At the beginning of in balance cut down in danger as well as well cut down in danger in balance at the beginning of Tigers are in danger of going extinct. “Save the Tigers” is a volunteer group that hopes to stop the tigers from disappearing. C. Tigers are important to the environment. Read the lesson and match each paragraph with its main idea. A C B Read the less