（2019新教材）外研版高中英语选择性必修二英语unit5 period2 usinglanguage&listening ppt课件（含音频）.zip

Unit5 A delicate world Period 2 Using language n. 庇护所 Summary：形式宾语 It 基本用法 it作形式宾语时, 也可以代替三种形 式: 不定式、动词-ing形式和宾语从句。 Vt.+ it + to do doing 从句 一、 it代替不定式短语 1. I find it pleasant to work with him. 2. They felt it difficult to finish the work in such a short time. 3. I think it my honor to be invited to speak here. 二、 it代替动名词(短语) 这只限于少数句型，在多数情况下用不定 式时更多一些。 1. The professor considers it no good reading without understanding. 2. He found it useless (no use) arguing with him. 三、 it代替宾语宾语 从句 Eg. He hasnt made it clear when he is coming back. 几种特殊情况： 1.动词（ take, have, put ） it + that 从句 Eg. I take it that he will finish the task by himself. 2.动词 (appreciate, enjoy, like, prefer) it+ when/if 从句 Eg. We really appreciate it if you could do us a favour. 3.动词 (owe it to sb, take it for granted) that 从句 Eg. We owe it to you that we are still alive. 几种特殊情况： 4.动词短语（look to, depend on, insist on, stick to, answer for ）+ it + that 从句 Eg. She insisted on it that she was innocent. 5.动词+it+过去分词从句 Eg. He made it known to everyone that he was right. 即时巩固 单句语法填空 1I consider it no use (quarrel) with him about it. 2I dont think possible to master a foreign language without much memory work. 3Will you see to that the luggage is brought back? 4I would appreciate if you would like to teach me how to use the computer. it it it quarreling 5. The Internet makes it possible _ (share) the latest news. 6I think my duty to help her. 7We all thought it a pity the conference should have been cancelled. 8They took for granted that I would be no good at it. it it to share that Part2 Ecosystems Activity5 Look at the diagram and answer the questions. Pay attention to the words and expressions in bold. P54 1 What does the diagram show? It shows a food chain the connection between the living things. 63. producer 生产者 64. consumer 消费者 *65. decomposer 分解者 Primary consumer Secondary consumer 66. absorb ones attention be absorbed in 67. dissolve 溶解 68. nutrient 养分 69. worm 蠕虫；幼虫 worm fungi bacteria notes: 70. fertilise the soil 使土壤肥沃 71. rely on= depend on 72. feed on 73. pray on 74. break down 75. take in nutrients 76. Producers absorb water and (dissolved) nutrients from the soil. Part2 Ecosystems 2 What are the relationships between the living things? P54 The living things are closely connected with each other by _ they eat. _ consumers pray on _ consumers, primary consumers feed on _, and _ absorb _ from the sun, and _ and _ from the soil, which are provided by _. the food Secondary primary producers producerslight waterdissolved nutrients decomposers Activity6 Complete the passage with the correct form of the words and expressions in Activity5? Part2 Ecosystems P54 absorb rely on fed on prey on break down release Part3 Listening P55Did you know? 77. be in existence 存在的 78. decline 下降，减少；谢绝 79. pollen 花粉 pollinate 授粉 80. nectar 花蜜 honey 蜂蜜 Part3 Listening P55 Listening materials: 1 Listening materials: 2 Listening materials: 3 Listening materials: 4 5 Part3 Listening P55 Activity8 Listen again and complete the flow chart. Part3 Listening P55 Activity8 check the answers Activity9 Complete the boxes