Unit 5 A Delicate World Understanding Ideas 学案-2023-2024学年高中英语外研版（2019）选择性必修第二册

Learning plan of Senior 2 No. XB2U5-2 Class: Name: Topic：XB2U5 A delicate world Type of lesson：Understanding ideas Prepared by：Farah Checked by：Gretchen Taught by： Time： Goals： 1. Find out what happened to Macquarie Island. 2. Make a flow chart to show what human did, their purposes and the results. 3. Talk about how to protect our natural ecosystem. Step one Pre-reading 1.Where is Macquarie Island (麦夸里岛)? 2. Guess Game：Do you know what animals they are? 3. Question: What will happen if the non-native animals are introduced into the island? I think the island will be ______________. (adj/-ed) 4. Read the title and predict the main idea of the passage. Macquarie Island: from Chaos to Conservation Step two Fast-reading 1. The Main idea: What happened to Macquarie island? __________________( Native inhanbitant / Non-native species) introduced to Macquarie Island _____________( helped / attacked ) native birds, and led to a _______________( subtle / substantial) reduction of bird population and even the extinction(灭绝) of parakeets. In addition, non-native species ate and devastated the native vegetation. All of this played a part in ______________( upsetting /cheering ) the natural harmony of the island. But now the island’s ecology（生态）is on the road to _________ ( destruction / recovery) with human efforts. 2.Match the main ideas with paragraphs and find the key words . Para 1 A. To protect native animals, invading animals species had to removed. Para 2 B. For biological chain, the island’s recent story is really a tragic story. Para 3 C. For some reasons, there were no cats in 2000. Para 4 D. Macquarie island is UNESCO world Heritage Site. Para 5 E. Because of biological chain, parakeets died out. Para 6 F. The rat, mouse and rabbit problem should be solved once and for all. Step three Careful reading 1. Find the detail